Glossary

Every term the school uses, defined once in plain English. The other docs link here rather than re-defining jargon mid-page.

10-K: The annual report filed with the SEC: audited financial statements, the business described end to end, risk factors, and management's discussion. The single most complete document a company produces.
10-Q: The quarterly filing: unaudited statements and a thinner discussion. Fresher than the 10-K, shallower than it.
13F: The quarterly holdings disclosure large investment managers must file, 45 days after quarter end. The source of every 'what the gurus own' list, and always six weeks stale.
8-K: The event filing, due within days of material news: an acquisition, an executive departure, results, a covenant breach. Where news breaks officially.
Active share: How different a fund's holdings are from its benchmark. A low-active-share fund charging active fees is an index fund with a markup; the fee should buy difference.
AFFO: Adjusted FFO: FFO minus the recurring capex and leasing costs needed to keep properties competitive. The REIT sector's free cash flow, and the honest base under a REIT's dividend.
Alpha and beta: Beta is return explained by exposure to the market (or a factor); alpha is what remains. Most claimed alpha dissolves into beta on inspection, which is why the decomposition is the first test of any record.
Annuity: A fixed payment repeated for a fixed number of periods, like a mortgage or a bond's coupons. Its present value has a closed formula, so streams of payments can be priced in one line.
Assignment: Being exercised against on a short option: the obligation arriving. In-the-money shorts get assigned, especially around dividends, and the shares change hands whether convenient or not.
Authorized participant: The large market makers allowed to create and redeem ETF shares against baskets of the underlying. Their arbitrage is the machine that keeps an ETF's price at its NAV.
Backtest: A simulation of a strategy on historical data: the only laboratory markets offer, and an efficient self-deception machine, because the past holds still while you search it.
Backwardation: Sooner delivery priced above later: the signature of scarcity, with no arbitrage cap because you cannot short a barrel you cannot borrow. Rolling a long position here gets PAID.
Basis point: One hundredth of a percentage point. Spreads and fee schedules are quoted in it; 50 basis points is half a percent.
Behavior gap: The measured difference between fund returns and what investors in those funds actually capture, several points a year in some studies: the cost of buying euphoria and selling panic, on a schedule.
Beta: How much a stock moves with the overall market. A beta of 1.2 means roughly 12% moves when the market moves 10%. In the CAPM it scales the equity risk premium up or down for the stock at hand.
Black-Litterman: Start from the market portfolio's implied returns as the neutral prior; tilt only where you hold explicit views, in proportion to stated confidence. The institutional standard for blending judgment with structure without letting the optimizer run wild.
Book value: Shareholders' equity as the balance sheet states it: assets minus liabilities. Meaningful where assets are financial or tangible (banks, insurers), nearly meaningless where the real assets are brands and code.
Breakeven inflation: The bond market's inflation forecast: the nominal government yield minus the inflation-protected (TIPS) yield of the same maturity. What inflation-hedging assets are priced against.
Business cycle: The economy's repeating sequence of expansion and contraction, mapped by growth and inflation into quadrants that different assets historically lead. Real as a map, useless as a clock.
CAGR: Compound annual growth rate: the single yearly rate that turns the starting value into the ending one. The honest summary of a track record, unlike the average of yearly returns, which volatility inflates.
Calendar spread: Long one delivery month, short another, in the same commodity: a bet on the curve's shape with no directional view. A large share of professional commodity trading lives here.
Calendarization: Restating companies with different fiscal year-ends onto the same twelve months so their multiples compare. Skipping it quietly compares one company's January-December against another's July-June.
Call option: The right, without obligation, to buy at the strike price by expiry. Upside exposure for a known premium; the seller takes the obligation side.
Calmar ratio: Annual return over maximum drawdown: return per unit of the pain investors actually remember.
Cap rate: A property's net operating income divided by its price: real estate's discount rate. A building earning ten million at a five percent cap rate is worth two hundred million; cap rates track interest rates, which is why property values are rate-sensitive.
Capacity: How much money a strategy absorbs before its own trading moves prices against it. Invisible in backtests, and where good live records go to die.
Capital allocation: What management does with the cash the business throws off: reinvest, acquire, repay debt, buy back stock, pay dividends. Five years of these choices, priced against what they returned, is a CEO's real report card.
Capital expenditure (capex): Cash spent on long-lived assets: plants, equipment, software. Maintenance capex keeps the current business running; growth capex expands it. Both reduce free cash flow now in exchange for cash flows later.
CAPM: The capital asset pricing model. It estimates the cost of equity as the risk-free rate plus beta times the equity risk premium: pay for time, plus pay for the market risk this stock actually adds.
Carry trade: Borrow the low-rate currency, deposit in the high-rate one, harvest the differential. Pays steadily until a risk shock unwinds everyone at once; the yen unwinds of 2008 and 2024 are the case studies.
Catalyst: The event expected to force the market to reprice toward your view: earnings, a spin-off, a regulatory decision, a contract. Cheap without a catalyst can stay cheap for years; the catalyst is the thesis's clock.
Closed-end fund: A fund with a fixed share count that trades at whatever the market pays, routinely above or below its NAV. The discounts are a hunting ground and sometimes a value trap with leverage attached.
Collar: Buy a protective put, fund it by selling a call above: downside floor purchased with surrendered upside. The standard dressing for a concentrated winner.
Combined ratio: An insurer's claims plus expenses divided by premiums earned. Under 100% means the underwriting itself is profitable before any investment income; over it means the insurer pays for the float it invests.
Commitments of Traders: The CFTC's weekly report splitting futures positions into commercial hedgers and speculators. Extreme speculative positioning measures how much of a story is already in the price, and how crowded its exit is.
Compounding: Growth on top of prior growth: each period's return earns returns in every later period. The reason time in the market matters more than almost any other input.
Confirmation bias: Seeking and over-weighting whatever agrees with the position. Its antidote is structural, not moral: pre-mortems, designated dissent, and deciding where disconfirming data would appear before looking.
Conglomerate discount: The recurring finding that a diversified company trades below the sum of its parts. Either the analyst's parts are overpriced or the structure itself destroys value; activists exist to argue the second.
Consensus: What the market currently believes, as embedded in the price. The opponent every thesis must name honestly; if you cannot write the other side's memo, you have not found the debate.
Contango: Later delivery priced above sooner: the signature of a well-supplied market, capped by the cost of storing and financing the physical. Rolling a long position in contango costs money every month.
Control premium: The excess over the trading price a buyer pays for a whole company, historically 20-40%. Control of strategy, management and capital is worth more than a minority ride.
Convenience yield: The value of physically holding a commodity when it is scarce: a refinery cannot run on a futures contract. It spikes when inventories are low, flipping curves into backwardation.
Convexity: The curvature duration misses: bond prices fall less and rise more than the linear estimate. A small free asymmetry in the holder's favor, priced accordingly.
Core-satellite: A cheap diversified core doing the compounding, with a bounded sleeve of active views around it. The structure that keeps opinions from silently becoming the whole portfolio.
Correlation: How much two assets move together, from -1 to +1. The input diversification lives on, and the one that betrays you: correlations measured in calm lurch toward one in a crash.
Cost curve: Every producer ranked from cheapest to most expensive. Long-run price gravitates to the marginal producer's cost, making the curve the closest thing commodities have to intrinsic value.
Cost of carry: Financing plus storage: what holding the physical costs per unit of time. It bounds how steep contango can get before arbitrage (buy spot, store, sell forward) locks a profit.
Cost of debt: The rate the company would pay to borrow today, not the coupon on old bonds. Interest is tax-deductible, so valuation uses the after-tax cost: the rate times one minus the tax rate.
Cost of equity: The annual return shareholders require for holding the stock instead of alternatives of similar risk. Unobservable, so it is estimated, most commonly with the CAPM.
Coupon: The fixed interest payment a bond makes, named for the paper coupons holders once clipped. Set at issue; what changes afterwards is the price, and therefore the yield.
Covenants: The tripwires written into debt contracts: leverage ceilings, payout limits, collateral rules. Weak ('covenant-lite') documentation, standard in hot markets, means lenders find out about trouble late.
Covered call: Selling a call against shares you own: income now in exchange for capping the upside. Fair pay only when you would have been content to sell at the strike anyway.
Creation / redemption: The ETF mechanism: hand in the basket, receive shares, or the reverse. It is why ETF liquidity is really the underlying market's liquidity wearing a ticker.
Credit spread: The extra yield a borrower pays over the government rate: the market's live price of default risk plus illiquidity. Spreads widening is markets losing faith, sector by sector or all at once.
Crowding: Too much capital in one trade. Crowded strategies unwind together, briefly correlating at the worst moment; measuring how much of a story is already positioned is half of risk management.
Currency hedging: Removing FX risk from an international position, usually with forwards. The professional default: hedge where the currency is not the thesis, size it separately where it is.
Currency pair: FX prices are ratios: EUR/USD is euros priced in dollars. Every position is long one economy's money and short another's, so every FX view is two macro views.
Current account: A country's net trade and income with the world. Persistent deficits must be financed by daily capital imports, which is fine until the financing mood changes: the anatomy of most currency crises.
Decision journal: A dated record of what you believed, at what price, expecting what, decided when. The instrument that lets you grade your PROCESS rather than your luck, and the only witness hindsight bias cannot bribe.
Delta: An option's share-equivalent exposure: a 0.30-delta call behaves like 30 shares per contract. Professionals size option positions by delta-adjusted notional, never by premium paid.
Depreciation and amortization (D&A): The accounting spread of a past purchase over the years it is used, for physical assets (depreciation) and intangible ones (amortization). Non-cash: the money left when the asset was bought, so cash flow analysis adds it back.
Diluted shares: Share count including the stock that options, warrants and convertibles would add. Per-share value uses diluted shares because those claims are real even before they convert.
Discount rate: The annual rate used to shrink future cash into today's money. It is the return an investor could demand elsewhere for taking similar risk, so riskier cash flows get higher rates and smaller present values.
Disposition effect: Selling winners quickly and clutching losers, the portfolio-level fingerprint of loss aversion: realize the pleasure, defer the pain, hold a museum of dead theses.
Dividend discount model (DDM): Valuing a share as the present value of its future dividends, usually with the growing-perpetuity formula. The natural method for payout-defined businesses: utilities, telecoms, and banks.
Dollar smile: The dollar strengthens when the US booms AND in global crisis (dollar debts must be serviced; dollars get hoarded), softening only in the mild middle. Every portfolio has a dollar exposure whether chosen or not.
Drift: Weights wandering from target as performance compounds, concentrating the book in whatever already rose. The silent force rebalancing exists to answer.
Dry powder: Unspent capacity, held on purpose: cash or unused risk budget available when prices are best. Not a failure to be invested; an option on everyone else's forced selling.
Duration: A bond's price sensitivity to interest rates: duration 7 means roughly a 7% price fall per one-point yield rise. The dial bond managers use to set how much rate risk a portfolio carries.
EBIT: Earnings before interest and taxes, better known as operating profit. What the business earns from operations before anyone (lenders, the tax authority) takes a share.
EBITDA: EBIT with depreciation and amortization added back. A rough proxy for operating cash generation, popular in comparisons because it ignores differences in asset age and financing; dangerous when treated as real cash flow, because capex is real.
Edge: The reason YOU capture a mispricing: informational (legal, real research), analytical (better interpretation), or structural (a horizon or freedom others lack). No edge, no thesis; a headline is not an edge.
Efficient frontier: The upper-left edge of all possible portfolios: no more return without more risk, no less risk without surrendering return. The durable use is the marginal question: does adding this asset move the frontier up?
Enterprise value (EV): The value of the whole operating business, belonging to debt and equity holders together. Market capitalization plus net debt (plus minority interests and preferred stock, when present).
Equal weight (1/N): The zero-estimation allocation: same weight to everything. Has repeatedly embarrassed sophisticated optimizers out of sample, because no estimation means no estimation error.
Equity risk premium (ERP): The extra annual return investors demand for holding stocks over government bonds. Estimated from history or implied from current prices; small changes in it move every valuation, which is why it is fought over.
Equity value: What belongs to shareholders: enterprise value minus net debt and other senior claims. Divided by diluted shares, it becomes a per-share value comparable to the stock price.
Estimation error: The gap between estimated inputs (especially expected returns, the least knowable numbers in finance) and truth. Raw optimizers amplify it; every robust construction method is a way of coping with it.
Exchange balances: Coins sitting on exchanges: sellable inventory. Multi-year drains into self-custody tighten the tradable float; sudden inflows historically precede selling.
Exit multiple: Terminal value as a price: final-year EBITDA (or EBIT) times a multiple taken from how comparable companies trade or sell. It imports the market's view into the model's end point.
Expected shortfall: The average loss across the tail beyond VaR: what the bad days cost when they come. The regulator's replacement for VaR, inheriting whatever the input distribution missed.
Expected value: The probability-weighted average of the outcomes: bull, base and bear prices times their odds. The number that decides whether a position is attractive, and the reason a likely-wrong idea with a huge payoff can beat a likely-right one with none.
Expense ratio: The fund's annual fee as a share of assets. The visible cost; tracking difference and trading spreads are the rest of the bill.
Expression: The instrument and structure chosen to carry a view. A correct thesis expressed badly loses money; the expression must match the claim's direction, deadline, magnitude and shape.
Factor: A recurring, systematic pattern in returns (value, momentum, quality, size) harvestable by rule. Much of what looks like stock-picking skill decomposes into factor exposure.
Factor regression: Regressing a portfolio's returns on the standard factors to see what it actually is. The X-ray that turns many celebrated records into market beta plus a static tilt available in a cheap ETF.
Factor zoo: The hundreds of published anomalies produced by testing the same data until something passes. The survivors of publication mostly shrink; the question for any new factor is who pays it and why they keep paying.
Fairness opinion: The valuation a target board's bankers file inside the merger proxy attesting the price is fair. Its exhibits disclose the bankers' own comps, precedents and DCF assumptions: a complete worked valuation, public for anyone to read.
Falsifier: The observable fact, chosen in advance, that would prove the thesis wrong and trigger exit. Deciding it while calm is cheap; deciding it mid-drawdown is expensive, which is why professionals write it down first.
Fat tails: Extreme outcomes arriving far more often than the bell curve predicts, which in markets they reliably do. Every risk model built on normality is optimistic precisely when it matters.
FFO (funds from operations): The REIT sector's earnings measure: net income with real estate depreciation added back and property-sale gains removed, because buildings on the books depreciate while often appreciating in fact.
Float: Premiums an insurer holds between collecting them and paying claims: other people's money available to invest. Cheap, durable float compounding in good hands is the engine Berkshire Hathaway was built on.
Football field: The one-page chart bankers use to lay valuation ranges from every method (DCF, trading comps, precedent transactions) side by side as horizontal bars. Where the bars overlap is where conviction lives.
Footnotes: The notes attached to audited financial statements: debt maturities, leases, segments, pensions, litigation, accounting policies. The fine print that professionals read first, because it is where inconvenient detail is required to live.
Forward multiple: A multiple computed on the NEXT twelve months' consensus estimates rather than the last twelve reported. The street's default, because prices look ahead, at the cost of inheriting the estimates' errors.
Forward points: The difference between a currency's forward and spot price, set by the rate differential. Hedging a currency costs roughly its points, which is why hedging high-yielders is expensive.
Free cash flow (FCF): The cash a business generates after paying for its operations and the reinvestment needed to keep running and growing. It is what could be handed to investors without harming the business, which is why valuation is built on it rather than on earnings.
Free cash flow to equity (FCFE): Free cash flow left for shareholders alone, after interest and after borrowing or repaying debt. Discounted at the cost of equity, it values the equity directly.
Free cash flow to the firm (FCFF): Free cash flow belonging to ALL capital providers, debt and equity together, measured before any interest payments. Discounted at the WACC, it values the whole enterprise.
Fund flows: Money moving into and out of funds, published weekly. Flows chase performance with a lag, so extreme inflows into a theme often date its late innings; index inclusion flows are forced buying on a schedule.
Funding rate: The periodic payment keeping perpetual futures at spot: positive means longs pay shorts. Persistently high funding is a crowded, paying-to-stay-long market, the classic pre-flush condition.
Future value: What money today grows into at a given rate over time: PV times (1 + r) to the n. Compounding read forward.
Futures contract: A standardized obligation to buy or sell at a set price on a set date, exchange-cleared and margined daily. The professional instrument for commodities, rates and index exposure.
Gamma: How fast delta itself changes as the underlying moves: the snowball rate of exposure. Highest near the strike close to expiry, where hedging it forces dealers to chase the market.
Goodwill: The premium paid over the identifiable value of an acquired company, parked on the buyer's balance sheet. It represents hoped-for synergies and brand; a write-down of it is the accounting confession that an acquisition disappointed.
Gordon growth model: Terminal value as a growing perpetuity: final-year cash flow, grown one year, divided by the discount rate minus the perpetual growth rate. The growth rate must not exceed the economy's, or the formula quietly claims the company will outgrow the world.
Gross and net exposure: Gross is longs plus shorts (total capital at work, leverage included); net is longs minus shorts (directional bet). The two dials a book's risk is actually steered with.
Gross margin: Gross profit divided by revenue: the share of each sales dollar left after the direct cost of what was sold. The first test of whether the product itself, before any overhead, makes money.
Halving: Bitcoin's scheduled 50% cut to new issuance every four years. The class has traded in rough cycles around it, on a sample size of four, which honest analysts say out loud.
Hedging ladder: The cost-ordered menu: hold less of the risk, own offsetting assets, hedge the specific exposure, buy explicit insurance. Professionals exhaust the free rungs before paying for the expensive ones.
Herding: The comfort of the crowd and the agony of standing apart. Aggregated, it builds momentum and bubbles; individually, it buys what compounded for others after it compounded.
High yield: Ratings below investment grade, politely 'high yield', historically 'junk'. Credit risk dominates and the bonds trade with a family resemblance to the issuer's equity.
Hindsight bias: The past reorganizing itself into having been obvious. Makes every crash 'predictable' afterwards and every lesson unlearnable; a dated decision journal is the only audit that survives it.
Hold-out sample: Data set aside untouched until final judgment. Consult it twice and it silently becomes training data; discipline about this separates research from curve-fitting.
Implied volatility: The movement forecast embedded in an option's price: run the pricing model backwards and out it comes. Comparing it to what the asset then actually does is the entire volatility trade.
Index methodology: The rulebook an index fund tracks: what qualifies, how it weights, when it rebalances. The rulebook IS the strategy; the fund's name is marketing.
Information ratio: Active return over tracking error: how much benchmark-beating a manager delivers per unit of benchmark-deviating. The fair exam for active management.
Insider transactions (Forms 3/4/5): Filings that report officers' and directors' trades in their own stock within days. Insider buying with personal cash is one of the few signals with consistent academic support; selling has too many innocent reasons to read alone.
Intrinsic value: What an asset is worth from its own cash-generating ability, independent of the current market quote. The output a DCF attempts; the market price is the number it is compared against.
Intrinsic vs time value: Intrinsic value is what exercising now would be worth; time value is the price of the remaining possibility. Time value bleeds to zero at expiry, which is theta made visible.
Inverted yield curve: Short yields above long ones: the market pricing future rate cuts, which usually means it expects a slowdown. It has preceded most postwar US recessions, with long and variable lead times.
Investment grade: Ratings BBB- and above: default is rare, so rate risk dominates the bond's behavior. The line matters because many institutions may only hold paper above it, making downgrades across it forced-selling events.
IRR (internal rate of return): The discount rate at which an investment's cash flows exactly break even against its price. The standard language of private equity returns, and what a bond's yield to maturity is.
Issuance vs burn: New tokens created (dilution) against tokens destroyed by fee burning. The net is the protocol's supply growth, the crypto analogue of share issuance versus buybacks.
IV crush: The collapse of implied volatility once the awaited event passes. A correct directional call on earnings can still lose money if the move was smaller than what the straddle had priced.
Kelly criterion: The bet fraction that maximizes long-run compound growth IF the edge estimate is exact. Overbetting it reduces growth and doubles toward ruin; practitioners run fractions of it and read it as a ceiling.
Leading indicators: The gauges that historically turn before the economy does: the yield curve, credit spreads, purchasing manager surveys, unemployment claims. Watched not to predict but to notice the regime changing slightly early.
Leveraged ETF decay: Daily-reset leverage compounds against holders in volatile flat markets: up 10% then down 9.1% is flat for the index and negative for the 2x. These are day-count instruments; held long, the decay is the product.
Limit order: An order that executes only at your price or better. The default in anything less than deeply liquid, because crossing spreads at market is a silent recurring fee.
Liquidation cascade: Forced closes triggering further forced closes as price gaps through leverage levels. Crypto's version of a margin-call spiral, and why open interest spikes resolve violently.
Liquidity (macro): The quantity of money and collateral flowing through the system: central bank balance sheets, bank credit, deficits. The tide under all asset prices; most everything-rallies and everything-sells episodes are liquidity events.
Long-term holders: The cohort holding coins older than ~155 days, statistically the strong hands. Their accumulation and distribution phases have repeated across every cycle and are readable directly from the chain.
Look-ahead bias: Using information before it existed: trading on year-end earnings not filed until February, or on later-revised data. The subtlest versions hide in restatements and cleaned datasets.
Loss aversion: Losses hurting roughly twice as much as equal gains please. The engine of holding losers (selling makes the loss real) and of most drawdown-era mistakes.
Low volatility anomaly: Boring stocks matching or beating the market at lower risk, the opposite of what textbook risk-reward predicts. Fed by leverage constraints and the lottery preference for exciting names.
LTM (last twelve months): The trailing year of financials, stitched from the latest filings. Deal multiples are computed on the target's LTM at announcement, never on projections the buyer hoped for.
LTV / CAC: Lifetime value of a customer against the cost of acquiring one, the core unit-economics ratio of subscription businesses. Healthy is a multiple of roughly three or more with an acquisition payback under two years.
Margin of safety: Buying below your estimate of value by enough to survive being partly wrong. The working admission that every valuation is an estimate.
Marginal producer: The highest-cost producer still needed to satisfy demand. Prices below its cost shut supply; prices above it invite new projects. Its economics anchor the long run.
Market impact: The price move your own trading causes. Grows with size and haste, invisible on paper, and the reason capacity limits exist.
Maturity wall: A cluster of debt coming due in a narrow window. Refinancing risk has a calendar, published in the debt footnote, and a fine company with everything due in a shut market is a default candidate.
Maximum drawdown: The deepest peak-to-trough loss in a period. The risk number investors quit over, and the one with cruel arithmetic: -50% needs +100% to repair.
MD&A: Management's Discussion and Analysis, Item 7 of the 10-K: management explaining in prose why results moved, decomposing changes into price, volume, currency, and deals. The highest-value section for understanding a business.
Mean-variance optimization: Markowitz's machine: given expected returns and covariances, solve for the best weights. Exact in math, fragile in practice, because it seeks out and leverages estimation error in its inputs.
Median vs mean: Comp sets quote medians because one 40x outlier drags a mean and the median resists it. When someone presents a mean multiple, look for the outlier doing the work.
Merger proxy (DEFM14A): The filing shareholders receive before voting on a deal: background of the negotiation, the price's justification, and the fairness opinion. The primary source on how real acquisitions get priced.
Mid-cycle earnings: A cyclical company's earnings averaged across the cycle rather than taken at the current peak or trough. Valuing cyclicals on spot earnings buys high and sells low by construction.
Mid-year convention: Discounting each year's cash flow as if it arrives mid-year rather than on December 31st, since cash actually arrives throughout the year. A small refinement that adds roughly half a year of value.
Minimum variance portfolio: The mix that minimizes risk using only covariances, ignoring return forecasts entirely. Its strong live record is a quiet verdict on return forecasts.
Moat: A structural barrier that stops a company's high returns from being competed away: network effects, switching costs, brands and patents, cost advantage, or efficient scale. The durable question is never whether a business is profitable but what protects the profits.
Momentum factor: Recent 12-month winners keep winning over the following months, across markets and centuries of data. Behavioral in origin, brutal in its periodic crashes when markets whipsaw.
Monetary premium: The part of an asset's price owed to its use as money rather than its utility: most of gold's value and nearly all of bitcoin's. It has no cash-flow anchor, which is a sizing instruction, not a dismissal.
Monetizing a hedge: Harvesting a hedge that paid: rolling it, rebalancing the gains into fallen assets. Skipped, the protection evaporates with the rebound it just paid for.
Multiple testing: Test a hundred random ideas and about five pass at conventional significance by construction. The meaning of a result depends on how many trials produced it, the number nobody volunteers.
MVRV: Market value over realized value: how far price sits above the aggregate cost basis, i.e. how much unrealized profit is begging to be taken. Extremes flag euphoria and capitulation better than price alone.
NAV (net asset value): Valuing a company by pricing its assets directly and subtracting debt: properties at market cap rates for a REIT, reserves at forward prices for oil and mining. The gap between a stock and its NAV is those sectors' core debate.
Negative skew: A return profile of many small gains and rare large losses, the shape of selling insurance. Carry trades and option selling share it; averages flatter it, and sizing must respect the tail rather than the average.
Net debt: Total debt minus cash and equivalents. The bridge between enterprise value and equity value; getting it wrong misprices every levered company, in proportion to its leverage.
Net working capital: The cash tied up in day-to-day operations: receivables and inventory, minus the payables that finance them. A growing business usually absorbs cash into working capital, which is why its change is subtracted in free cash flow.
Network effects: When each additional user makes the product more valuable to every other user, as in marketplaces and exchanges. The strongest moat type when real, and the most claimed when not.
Nominal vs real: Nominal counts dollars; real counts purchasing power, which is nominal with inflation removed. The rule: discount nominal cash flows at nominal rates and real at real, never mixed.
Non-GAAP measures: Company-defined numbers like adjusted EBITDA that exclude items the company chooses to exclude. Filings must reconcile them to the audited figure; the reconciliation, and especially its size, is the informative part.
NOPAT: Net operating profit after tax: operating profit (EBIT) with tax removed, as if the company had no debt. It is the starting point for FCFF because it strips financing choices out of the operating result.
Normalized earnings: Earnings with one-time items stripped out on a consistent basis across a peer set: restructurings, litigation, gains on sales. The step that makes a comp set mean something.
Open interest: The count of derivative contracts outstanding: total leveraged exposure. Rising with price means a levered move; a cascade of forced closes is how levered moves end.
Operating leverage: How much profits amplify a change in revenue because costs are fixed. High operating leverage makes good years great and bad years terrible; it is a magnitude, not a virtue.
Operating margin: Operating income (EBIT) divided by revenue: the share of each sales dollar left after ALL costs of running the business. The standard measure of business-model profitability.
Opportunity cost: The return of the best alternative you give up by choosing this one. Discount rates are opportunity costs; that is why they rise with risk, since riskier projects must beat riskier alternatives.
Overconfidence: Certainty rising faster than accuracy, peaking exactly when sizing discipline matters most. The reason caps exist that do not care how sure you are.
Overfitting: Fitting the noise of one sample rather than a repeatable signal. The tell is fragility: real edges survive parameter wiggles and date shifts; overfit ones shatter.
P/TBV: Price to tangible book value: market price over book value with goodwill and intangibles stripped out. The standard bank multiple, read against ROE, since a bank earning above its cost of equity deserves more than tangible book and one earning below deserves less.
Pair trade: Long one asset, short a related one, isolating the relative claim and shedding the market's direction. The honest expression of 'better than its peers'.
Parameter plateau: An edge that persists across neighboring parameter values. Plateaus suggest signal; a sharp peak at one magic number is noise wearing a crown.
Perpetual future: Crypto's dominant instrument: a future that never expires, tethered to spot by periodic funding payments between longs and shorts.
Perpetuity: A stream of cash flows assumed to continue forever. A perpetuity growing at a steady rate g and discounted at rate r has a finite value of next year's cash flow divided by (r minus g).
Point-in-time data: Data as it stood on each historical date, including companies later delisted and numbers later revised. The antidote to survivorship and look-ahead, and rarely what free datasets are.
Porter's five forces: The standard frame for judging an industry's profit structure: rivalry among incumbents, threat of new entrants, supplier power, buyer power, and substitutes. It explains why some industries enrich everyone in them and others no one.
Position sizing: How much. The decision that determines survival, made by rule (risk budgets, volatility parity, caps) precisely because the moments it matters most are the moments judgment is worst.
Pre-mortem: Assume the position failed and explain why, before entering. The three most plausible failure stories are the real risk list, and better than any generic one.
Premium (options): What the option buyer pays and the seller keeps regardless of outcome. The buyer's maximum loss and the seller's maximum gain.
Present value (PV): What a future amount of money is worth today, after shrinking it for the time you must wait and the risk you must bear. A dollar promised in five years is worth less than a dollar in hand; present value says exactly how much less.
Priced in: Already reflected in the price. Markets move on the gap between events and expectations, never on events alone, which is why being right about the economy and losing money is the most common macro outcome.
Proxy statement (DEF 14A): The filing before the annual meeting covering governance: who sits on the board, how executives are paid and against which targets, and what shareholders will vote on. Pay structure predicts behavior.
Purchasing power parity: The long-run tendency of exchange rates toward equalizing what money buys across borders. Useless for timing, excellent for knowing which side of expensive a currency starts from.
Put option: The right, without obligation, to sell at the strike by expiry: insurance on a price. Under a concentrated position it sets a floor for a known premium.
Quality factor: Profitable, stable, conservatively financed companies outperforming what their risk justifies. The market systematically underprices boring.
Rate differential: The gap between two economies' interest rates, the fast anchor of exchange rates. The two-year government yield spread tracks major pairs remarkably well over months.
Re-underwriting: Re-doing the thesis from scratch as if entering today, usually triggered by a violent move in either direction. The honest answer to 'is there new information, or only new pain?'
Reaction function: What data makes a central bank move, and how much. The skill in reading central banks is learning theirs, not parsing adjectives in statements.
Real interest rates: Nominal rates minus expected inflation: the true price of money. The main driver of gold (the opportunity cost of a yieldless asset) and, in liquidity-driven regimes, of most risk assets.
Realized price: The average acquisition cost of all coins, weighting each at its last on-chain move: the market's aggregate cost basis, computable only because the ledger is public. Spot meeting it has historically marked bear-market floors.
Rebalancing: Trading back to target weights on a schedule or at thresholds: mechanically selling what rose and buying what fell. The discipline that keeps an allocation being the allocation you chose.
Recency bias: The last regime becoming the forecast: maximum equities after the rally, maximum cash after the crash. The bias factor investors harvest from everyone else.
Recovery rate: Cents on the dollar creditors actually receive after a default, historically ~40 for unsecured bonds and more for secured loans. Expected loss is default probability times one minus this.
Regime: A market era with its own rules: the inflation seventies, the QE 2010s. Backtests assume tomorrow is drawn from the sample's regime; report performance per named regime instead of one blended number.
Residual income: Valuing equity as book value plus the present value of earnings above the required return on that book. Earning exactly the cost of equity adds nothing; only the excess creates value. The academic backbone of bank valuation.
Retained earnings: The running total of every profit the company ever kept rather than paid out. The line on the balance sheet where the income statement's history accumulates.
Return on equity (ROE): Net income divided by shareholders' equity: what the owners earn on the capital they have in the business. High ROE sustained for years is the signature of a strong business or heavy leverage; the analysis is telling those apart.
Reverse DCF: Running the machine backwards: instead of estimating value from assumptions, solve for the growth and margins the current price already implies, then judge whether those are beatable. Often more honest than the forward version, because it removes your favorite input.
Risk budget: The loss a position or book is permitted to plausibly cost, decided before entry. Sizing in risk units instead of dollars is the professional habit that keeps one mistake survivable.
Risk parity: Weighting so each asset contributes equal RISK rather than equal dollars: a 60/40 is ~90% equity risk in disguise. Honest about diversification; dependent on leverage and on bonds staying diversifiers, which 2022 tested.
Risk reversal (FX): The implied-volatility gap between out-of-the-money calls and puts on a currency: the options market's directional fear gauge, and a crowding check before entering.
Risk-free rate: The yield on the safest asset in the currency of the cash flows, in practice a long-term government bond. It is the floor every other required return builds on.
ROIC: Return on invested capital: after-tax operating profit over the debt-plus-equity capital tied up in operations. The cleanest single measure of business quality, and value is created only where ROIC exceeds the cost of capital.
Roll yield: The gain or bleed from rolling an expiring future into the next month, set by the curve's shape. Over years it has dominated commodity index returns, deciding whether being right on spot made or lost money.
Rule of 72: The mental shortcut for doubling time: 72 divided by the annual rate. At 8%, money doubles in about nine years.
Scaling in: Building a position in planned increments as evidence confirms or price improves, rather than all at once. Buys optionality on your own fallibility.
Securities lending: Funds lending their holdings to short sellers for a fee, which offsets costs (and explains some funds beating their own expense ratio). The revenue split and collateral policy are in the fine print.
Seniority: The bankruptcy queue: secured lenders, unsecured bondholders, subordinated debt, preferred, then equity last. The same company's different claims can deserve opposite verdicts because they stand in different places.
Sensitivity analysis: Re-running a valuation across a grid of assumptions, classically discount rate against terminal growth, to see the range of answers rather than one false-precise point. If the verdict flips inside plausible assumptions, the model has not settled the question.
Sharpe ratio: Excess return over the risk-free rate, per unit of volatility. Around 1 is genuinely good long-run; above 2 deserves an audit. Gameable by strategies whose defining loss has not happened inside the sample yet.
Skew: Which tail of the return distribution is long. Negative skew (carry, option selling): many small wins, rare disasters. Positive (trend, long options): many small losses, rare windfalls. Identical Sharpes with opposite skews are opposite products.
SOPR: Spent output profit ratio: whether coins moving on-chain today are being sold at a profit or a loss. Persistent readings below one are capitulation in progress.
Sortino ratio: Sharpe with only downside deviation in the denominator, so upside surprises are not punished as risk. Fairer to asymmetric strategies.
Staking yield: The return for locking tokens to secure a proof-of-stake network: the asset class's native benchmark rate, against which other crypto yields get judged.
Steelmanning: Arguing the opposing case at its strongest, not its weakest. The intellectual habit that separates testing a thesis from decorating it.
Stock-bond correlation: In low-inflation regimes bonds hedge stocks (bad growth news brings rate cuts); in high inflation the correlation flips positive and the classic 60/40 loses both halves at once, as 2022 demonstrated. Which regime you are in decides whether your diversification exists.
Stop loss: A pre-set exit on price. Controls damage mechanically but sells at maximum pessimism on no new information; professionals pair stops with sizes so the stop distance equals the risk budget, or prefer falsifier-based exits.
Straddle: Buying the call and the put at the same strike: a bet on movement without direction. Its price before an event states, in dollars, the move the market already expects.
Strategic asset allocation: The long-term policy mix across asset classes, set from objectives and regime logic, touched rarely. The single decision that explains most of a diversified portfolio's outcome.
Strategic vs financial buyer: A strategic buyer operates in the industry and can pay for synergies; a financial buyer (private equity) pays what leverage and exit multiples justify. Strategics usually outbid, which is why the buyer mix in a precedent set matters.
Strike price: The contracted transaction price of an option: the deductible on the insurance. Choosing it is choosing how much pain you self-insure before protection starts.
Sum-of-the-parts (SOTP): Valuing a multi-business company piece by piece, each segment by its own industry's method, then summing and netting corporate costs and debt. The tool for conglomerates and the arithmetic behind every break-up thesis.
Supply-demand balance: The commodity analyst's model: production plus inventory change must equal consumption, quarter by quarter. Price is the negotiator that keeps the identity true when the balance tightens.
Survivorship bias: Testing on today's members means testing only on survivors; the delisted and bankrupt are missing, and they are what a strategy would have bought on the way down.
Switching costs: The money, time and risk a customer would incur to leave. High switching costs show up in the numbers as retention; the claim without the retention is just hope.
Synergies: The cost cuts and revenue gains a buyer expects from combining companies. Part of their expected value is competed away to the seller in an auction, which is why deal prices embed optimism the combined company must then deliver.
Tail hedge: A standing position whose job is to pay in crashes: far out-of-the-money puts, long volatility. A drag most years by design; the premium buys the year that matters.
Tangency portfolio: The frontier portfolio with the highest Sharpe ratio, found where a line from the risk-free rate touches the frontier. Theory says hold it and scale with cash or leverage; practice says estimate it humbly.
Term structure (futures): The strip of futures prices across delivery months. In commodities its SHAPE, not the spot level, carries most of the information and most of the return.
Terminal value: The value of all cash flows beyond the explicit forecast, collapsed into a single number at the forecast's end. It routinely carries more than half of a DCF's total value, which is why its assumptions deserve the most scrutiny.
Terms of trade: Export prices over import prices. Commodity exporters' currencies ride their commodities closely enough that traders use the currencies as proxies.
Theta: The daily cost of time passing: what option buyers pay in rent and sellers collect. Short-dated out-of-the-money options are almost all theta.
Threshold bands: Rebalancing when a sleeve drifts a set distance from target rather than on a calendar. Fewer trades, better tax outcomes, same discipline.
Time horizon: How long capital can genuinely wait, set by the catalyst and by the holder's real constraints. Instruments and sizing inherit it; a two-year story in three-month options is a thesis fighting its own clock.
Time stop: Exiting because the catalyst window closed without the catalyst. The market heard the story and shrugged; capital has better uses than waiting indefinitely.
Time value of money: The principle that money now beats the same money later, because money now can be invested, and because later is uncertain. All of valuation is this principle applied carefully.
Tokenomics: A token's economic constitution: supply schedule, unlock calendar, and whether protocol fees buy back, burn, or bypass the token. The first read, because a winning protocol with value routed elsewhere leaves the token worthless.
Total addressable market (TAM): The revenue available if a company served every possible customer. Useful as a ceiling and abused as a pitch; the discipline is asking what fraction is realistically serviceable and at what cost.
Tracking difference: What a fund actually lagged (or beat) its index over a period, netting fees, replication choices and securities-lending income. The honest cost number, and often smaller OR larger than the expense ratio.
Trading multiple: Price standardized by a unit of performance so unlike-sized companies compare: EV/EBITDA, P/E, EV/revenue. Ten times EBITDA means the market pays ten dollars per dollar of annual EBITDA.
Transaction costs: Spreads, market impact, borrow fees and taxes: what paper trading ignores. High-turnover strategies are routinely profitable before costs and worthless after.
Unaffected price: The target's stock price before leaks and speculation began moving it toward a rumored deal. Premiums are measured against it, since the price the day before signing already contains half the news.
Uncovered interest parity: The theory that rate differentials should be erased by currency depreciation. Empirically it fails for years at a time (the forward premium puzzle), which is why carry exists as a strategy.
Unit economics: The profit and loss of one atomic unit of the business: one store, one subscriber, one policy. Aggregate growth can hide units that each destroy value; unit economics is how that is caught early.
Value at risk (VaR): The loss exceeded only X% of the time, banking's standard gauge. Says nothing about how bad the exceeding days are, which is what expected shortfall repairs.
Value factor: The long-run tendency of statistically cheap stocks to beat expensive ones. Paid either as compensation for distress risk or by other investors' overreaction; a decade of failure per generation is part of the deal.
Variant perception: A specific belief that differs from consensus, held with evidence, plus a reason the market is wrong. The only source of excess return; the discipline is stating it in one sentence.
Vega: Sensitivity to implied volatility: profit and loss from the fear gauge moving with price unchanged. Long options are long fear; short options are short it.
Volatility: Annualized standard deviation of returns: how widely outcomes scatter. The industry's risk currency: computable and comparable, blind to direction, regime shifts and tails.
Volatility drag: The gap between average and compound returns, roughly half the variance: +50% then -33% averages +8.5% and compounds to nothing. The mathematical reason wild rides underperform their marketing.
Volatility risk premium: The long-run finding that implied volatility usually exceeds realized: options, like insurance, cost a bit more than they pay out on average, because sellers bear the tail. Buyers' theses must clear this bar.
Volatility targeting: Holding the portfolio's risk level constant by scaling exposure down in storms and up in calm. Changes when you take risk rather than where; sells after losses by construction.
WACC: Weighted average cost of capital: the blended required return of everyone financing the company, equity and debt weighted by their market values. It is the discount rate matched to FCFF, because both belong to all capital providers.
Walk-forward testing: Fit on a rolling window, trade the next, repeat: the closest simulation of how research meets the future.
Yield curve: Government yields plotted against maturity. Upward-sloping is the normal state; its shape is the bond market's forecast of growth, inflation and policy.
Yield to maturity: The single rate that makes a bond's remaining coupons and principal worth exactly its current price: the bond's IRR if held to the end and paid in full.

Glossary

Every term the school uses, defined once in plain English. The other docs link here rather than re-defining jargon mid-page.

10-K

The annual report filed with the SEC: audited financial statements, the business described end to end, risk factors, and management's discussion. The single most complete document a company produces.

10-Q

The quarterly filing: unaudited statements and a thinner discussion. Fresher than the 10-K, shallower than it.

13F

The quarterly holdings disclosure large investment managers must file, 45 days after quarter end. The source of every 'what the gurus own' list, and always six weeks stale.

8-K

The event filing, due within days of material news: an acquisition, an executive departure, results, a covenant breach. Where news breaks officially.

AFFO

Adjusted FFO: FFO minus the recurring capex and leasing costs needed to keep properties competitive. The REIT sector's free cash flow, and the honest base under a REIT's dividend.

Alpha and beta

Beta is return explained by exposure to the market (or a factor); alpha is what remains. Most claimed alpha dissolves into beta on inspection, which is why the decomposition is the first test of any record.

Annuity

A fixed payment repeated for a fixed number of periods, like a mortgage or a bond's coupons. Its present value has a closed formula, so streams of payments can be priced in one line.

Assignment

Being exercised against on a short option: the obligation arriving. In-the-money shorts get assigned, especially around dividends, and the shares change hands whether convenient or not.

Authorized participant

The large market makers allowed to create and redeem ETF shares against baskets of the underlying. Their arbitrage is the machine that keeps an ETF's price at its NAV.

Backtest

A simulation of a strategy on historical data: the only laboratory markets offer, and an efficient self-deception machine, because the past holds still while you search it.

Backwardation

Sooner delivery priced above later: the signature of scarcity, with no arbitrage cap because you cannot short a barrel you cannot borrow. Rolling a long position here gets PAID.

Basis point

One hundredth of a percentage point. Spreads and fee schedules are quoted in it; 50 basis points is half a percent.

Behavior gap

The measured difference between fund returns and what investors in those funds actually capture, several points a year in some studies: the cost of buying euphoria and selling panic, on a schedule.

Beta

How much a stock moves with the overall market. A beta of 1.2 means roughly 12% moves when the market moves 10%. In the CAPM it scales the equity risk premium up or down for the stock at hand.

Black-Litterman

Start from the market portfolio's implied returns as the neutral prior; tilt only where you hold explicit views, in proportion to stated confidence. The institutional standard for blending judgment with structure without letting the optimizer run wild.

Book value

Shareholders' equity as the balance sheet states it: assets minus liabilities. Meaningful where assets are financial or tangible (banks, insurers), nearly meaningless where the real assets are brands and code.

Breakeven inflation

The bond market's inflation forecast: the nominal government yield minus the inflation-protected (TIPS) yield of the same maturity. What inflation-hedging assets are priced against.

Business cycle

The economy's repeating sequence of expansion and contraction, mapped by growth and inflation into quadrants that different assets historically lead. Real as a map, useless as a clock.

CAGR

Compound annual growth rate: the single yearly rate that turns the starting value into the ending one. The honest summary of a track record, unlike the average of yearly returns, which volatility inflates.

Calendar spread

Long one delivery month, short another, in the same commodity: a bet on the curve's shape with no directional view. A large share of professional commodity trading lives here.

Calendarization

Restating companies with different fiscal year-ends onto the same twelve months so their multiples compare. Skipping it quietly compares one company's January-December against another's July-June.

Call option

The right, without obligation, to buy at the strike price by expiry. Upside exposure for a known premium; the seller takes the obligation side.

Calmar ratio

Annual return over maximum drawdown: return per unit of the pain investors actually remember.

Cap rate

A property's net operating income divided by its price: real estate's discount rate. A building earning ten million at a five percent cap rate is worth two hundred million; cap rates track interest rates, which is why property values are rate-sensitive.

Capacity

How much money a strategy absorbs before its own trading moves prices against it. Invisible in backtests, and where good live records go to die.

Capital allocation

What management does with the cash the business throws off: reinvest, acquire, repay debt, buy back stock, pay dividends. Five years of these choices, priced against what they returned, is a CEO's real report card.

Capital expenditure (capex)

Cash spent on long-lived assets: plants, equipment, software. Maintenance capex keeps the current business running; growth capex expands it. Both reduce free cash flow now in exchange for cash flows later.

CAPM

The capital asset pricing model. It estimates the cost of equity as the risk-free rate plus beta times the equity risk premium: pay for time, plus pay for the market risk this stock actually adds.

Carry trade

Borrow the low-rate currency, deposit in the high-rate one, harvest the differential. Pays steadily until a risk shock unwinds everyone at once; the yen unwinds of 2008 and 2024 are the case studies.

Catalyst

The event expected to force the market to reprice toward your view: earnings, a spin-off, a regulatory decision, a contract. Cheap without a catalyst can stay cheap for years; the catalyst is the thesis's clock.

Closed-end fund

A fund with a fixed share count that trades at whatever the market pays, routinely above or below its NAV. The discounts are a hunting ground and sometimes a value trap with leverage attached.

Collar

Buy a protective put, fund it by selling a call above: downside floor purchased with surrendered upside. The standard dressing for a concentrated winner.

Combined ratio

An insurer's claims plus expenses divided by premiums earned. Under 100% means the underwriting itself is profitable before any investment income; over it means the insurer pays for the float it invests.

Commitments of Traders

The CFTC's weekly report splitting futures positions into commercial hedgers and speculators. Extreme speculative positioning measures how much of a story is already in the price, and how crowded its exit is.

Compounding

Growth on top of prior growth: each period's return earns returns in every later period. The reason time in the market matters more than almost any other input.

Confirmation bias

Seeking and over-weighting whatever agrees with the position. Its antidote is structural, not moral: pre-mortems, designated dissent, and deciding where disconfirming data would appear before looking.

Conglomerate discount

The recurring finding that a diversified company trades below the sum of its parts. Either the analyst's parts are overpriced or the structure itself destroys value; activists exist to argue the second.

Consensus

What the market currently believes, as embedded in the price. The opponent every thesis must name honestly; if you cannot write the other side's memo, you have not found the debate.

Contango

Later delivery priced above sooner: the signature of a well-supplied market, capped by the cost of storing and financing the physical. Rolling a long position in contango costs money every month.

Control premium

The excess over the trading price a buyer pays for a whole company, historically 20-40%. Control of strategy, management and capital is worth more than a minority ride.

Convenience yield

The value of physically holding a commodity when it is scarce: a refinery cannot run on a futures contract. It spikes when inventories are low, flipping curves into backwardation.

Convexity

The curvature duration misses: bond prices fall less and rise more than the linear estimate. A small free asymmetry in the holder's favor, priced accordingly.

Core-satellite

A cheap diversified core doing the compounding, with a bounded sleeve of active views around it. The structure that keeps opinions from silently becoming the whole portfolio.

Correlation

How much two assets move together, from -1 to +1. The input diversification lives on, and the one that betrays you: correlations measured in calm lurch toward one in a crash.

Cost curve

Every producer ranked from cheapest to most expensive. Long-run price gravitates to the marginal producer's cost, making the curve the closest thing commodities have to intrinsic value.

Cost of carry

Financing plus storage: what holding the physical costs per unit of time. It bounds how steep contango can get before arbitrage (buy spot, store, sell forward) locks a profit.

Cost of debt

The rate the company would pay to borrow today, not the coupon on old bonds. Interest is tax-deductible, so valuation uses the after-tax cost: the rate times one minus the tax rate.

Cost of equity

The annual return shareholders require for holding the stock instead of alternatives of similar risk. Unobservable, so it is estimated, most commonly with the CAPM.

Coupon

The fixed interest payment a bond makes, named for the paper coupons holders once clipped. Set at issue; what changes afterwards is the price, and therefore the yield.

Covenants

The tripwires written into debt contracts: leverage ceilings, payout limits, collateral rules. Weak ('covenant-lite') documentation, standard in hot markets, means lenders find out about trouble late.

Covered call

Selling a call against shares you own: income now in exchange for capping the upside. Fair pay only when you would have been content to sell at the strike anyway.

Creation / redemption

The ETF mechanism: hand in the basket, receive shares, or the reverse. It is why ETF liquidity is really the underlying market's liquidity wearing a ticker.

Credit spread

The extra yield a borrower pays over the government rate: the market's live price of default risk plus illiquidity. Spreads widening is markets losing faith, sector by sector or all at once.

Crowding

Too much capital in one trade. Crowded strategies unwind together, briefly correlating at the worst moment; measuring how much of a story is already positioned is half of risk management.

Currency hedging

Removing FX risk from an international position, usually with forwards. The professional default: hedge where the currency is not the thesis, size it separately where it is.

Currency pair

FX prices are ratios: EUR/USD is euros priced in dollars. Every position is long one economy's money and short another's, so every FX view is two macro views.

Current account

A country's net trade and income with the world. Persistent deficits must be financed by daily capital imports, which is fine until the financing mood changes: the anatomy of most currency crises.

Decision journal

A dated record of what you believed, at what price, expecting what, decided when. The instrument that lets you grade your PROCESS rather than your luck, and the only witness hindsight bias cannot bribe.

Delta

An option's share-equivalent exposure: a 0.30-delta call behaves like 30 shares per contract. Professionals size option positions by delta-adjusted notional, never by premium paid.

Depreciation and amortization (D&A)

The accounting spread of a past purchase over the years it is used, for physical assets (depreciation) and intangible ones (amortization). Non-cash: the money left when the asset was bought, so cash flow analysis adds it back.

Diluted shares

Share count including the stock that options, warrants and convertibles would add. Per-share value uses diluted shares because those claims are real even before they convert.

Discount rate

The annual rate used to shrink future cash into today's money. It is the return an investor could demand elsewhere for taking similar risk, so riskier cash flows get higher rates and smaller present values.

Disposition effect

Selling winners quickly and clutching losers, the portfolio-level fingerprint of loss aversion: realize the pleasure, defer the pain, hold a museum of dead theses.

Dividend discount model (DDM)

Valuing a share as the present value of its future dividends, usually with the growing-perpetuity formula. The natural method for payout-defined businesses: utilities, telecoms, and banks.

Dollar smile

The dollar strengthens when the US booms AND in global crisis (dollar debts must be serviced; dollars get hoarded), softening only in the mild middle. Every portfolio has a dollar exposure whether chosen or not.

Drift

Weights wandering from target as performance compounds, concentrating the book in whatever already rose. The silent force rebalancing exists to answer.

Dry powder

Unspent capacity, held on purpose: cash or unused risk budget available when prices are best. Not a failure to be invested; an option on everyone else's forced selling.

Duration

A bond's price sensitivity to interest rates: duration 7 means roughly a 7% price fall per one-point yield rise. The dial bond managers use to set how much rate risk a portfolio carries.

EBIT

Earnings before interest and taxes, better known as operating profit. What the business earns from operations before anyone (lenders, the tax authority) takes a share.

EBITDA

EBIT with depreciation and amortization added back. A rough proxy for operating cash generation, popular in comparisons because it ignores differences in asset age and financing; dangerous when treated as real cash flow, because capex is real.

Edge

The reason YOU capture a mispricing: informational (legal, real research), analytical (better interpretation), or structural (a horizon or freedom others lack). No edge, no thesis; a headline is not an edge.

Efficient frontier

The upper-left edge of all possible portfolios: no more return without more risk, no less risk without surrendering return. The durable use is the marginal question: does adding this asset move the frontier up?

Enterprise value (EV)

The value of the whole operating business, belonging to debt and equity holders together. Market capitalization plus net debt (plus minority interests and preferred stock, when present).

Equal weight (1/N)

The zero-estimation allocation: same weight to everything. Has repeatedly embarrassed sophisticated optimizers out of sample, because no estimation means no estimation error.

Equity risk premium (ERP)

The extra annual return investors demand for holding stocks over government bonds. Estimated from history or implied from current prices; small changes in it move every valuation, which is why it is fought over.

Equity value

What belongs to shareholders: enterprise value minus net debt and other senior claims. Divided by diluted shares, it becomes a per-share value comparable to the stock price.

Estimation error

The gap between estimated inputs (especially expected returns, the least knowable numbers in finance) and truth. Raw optimizers amplify it; every robust construction method is a way of coping with it.

Exchange balances

Coins sitting on exchanges: sellable inventory. Multi-year drains into self-custody tighten the tradable float; sudden inflows historically precede selling.

Exit multiple

Terminal value as a price: final-year EBITDA (or EBIT) times a multiple taken from how comparable companies trade or sell. It imports the market's view into the model's end point.

Expected shortfall

The average loss across the tail beyond VaR: what the bad days cost when they come. The regulator's replacement for VaR, inheriting whatever the input distribution missed.

Expected value

The probability-weighted average of the outcomes: bull, base and bear prices times their odds. The number that decides whether a position is attractive, and the reason a likely-wrong idea with a huge payoff can beat a likely-right one with none.

Expense ratio

The fund's annual fee as a share of assets. The visible cost; tracking difference and trading spreads are the rest of the bill.

Expression

The instrument and structure chosen to carry a view. A correct thesis expressed badly loses money; the expression must match the claim's direction, deadline, magnitude and shape.

Factor

A recurring, systematic pattern in returns (value, momentum, quality, size) harvestable by rule. Much of what looks like stock-picking skill decomposes into factor exposure.

Factor regression

Regressing a portfolio's returns on the standard factors to see what it actually is. The X-ray that turns many celebrated records into market beta plus a static tilt available in a cheap ETF.

Factor zoo

The hundreds of published anomalies produced by testing the same data until something passes. The survivors of publication mostly shrink; the question for any new factor is who pays it and why they keep paying.

Fairness opinion

The valuation a target board's bankers file inside the merger proxy attesting the price is fair. Its exhibits disclose the bankers' own comps, precedents and DCF assumptions: a complete worked valuation, public for anyone to read.

Falsifier

The observable fact, chosen in advance, that would prove the thesis wrong and trigger exit. Deciding it while calm is cheap; deciding it mid-drawdown is expensive, which is why professionals write it down first.

Fat tails

Extreme outcomes arriving far more often than the bell curve predicts, which in markets they reliably do. Every risk model built on normality is optimistic precisely when it matters.

FFO (funds from operations)

The REIT sector's earnings measure: net income with real estate depreciation added back and property-sale gains removed, because buildings on the books depreciate while often appreciating in fact.

Float

Premiums an insurer holds between collecting them and paying claims: other people's money available to invest. Cheap, durable float compounding in good hands is the engine Berkshire Hathaway was built on.

Football field

The one-page chart bankers use to lay valuation ranges from every method (DCF, trading comps, precedent transactions) side by side as horizontal bars. Where the bars overlap is where conviction lives.

Footnotes

The notes attached to audited financial statements: debt maturities, leases, segments, pensions, litigation, accounting policies. The fine print that professionals read first, because it is where inconvenient detail is required to live.

Forward multiple

A multiple computed on the NEXT twelve months' consensus estimates rather than the last twelve reported. The street's default, because prices look ahead, at the cost of inheriting the estimates' errors.

Forward points

The difference between a currency's forward and spot price, set by the rate differential. Hedging a currency costs roughly its points, which is why hedging high-yielders is expensive.

Free cash flow (FCF)

The cash a business generates after paying for its operations and the reinvestment needed to keep running and growing. It is what could be handed to investors without harming the business, which is why valuation is built on it rather than on earnings.

Free cash flow to equity (FCFE)

Free cash flow left for shareholders alone, after interest and after borrowing or repaying debt. Discounted at the cost of equity, it values the equity directly.

Free cash flow to the firm (FCFF)

Free cash flow belonging to ALL capital providers, debt and equity together, measured before any interest payments. Discounted at the WACC, it values the whole enterprise.

Fund flows

Money moving into and out of funds, published weekly. Flows chase performance with a lag, so extreme inflows into a theme often date its late innings; index inclusion flows are forced buying on a schedule.

Funding rate

The periodic payment keeping perpetual futures at spot: positive means longs pay shorts. Persistently high funding is a crowded, paying-to-stay-long market, the classic pre-flush condition.

Future value

What money today grows into at a given rate over time: PV times (1 + r) to the n. Compounding read forward.

Futures contract

A standardized obligation to buy or sell at a set price on a set date, exchange-cleared and margined daily. The professional instrument for commodities, rates and index exposure.

Gamma

How fast delta itself changes as the underlying moves: the snowball rate of exposure. Highest near the strike close to expiry, where hedging it forces dealers to chase the market.

Goodwill

The premium paid over the identifiable value of an acquired company, parked on the buyer's balance sheet. It represents hoped-for synergies and brand; a write-down of it is the accounting confession that an acquisition disappointed.

Gordon growth model

Terminal value as a growing perpetuity: final-year cash flow, grown one year, divided by the discount rate minus the perpetual growth rate. The growth rate must not exceed the economy's, or the formula quietly claims the company will outgrow the world.

Gross and net exposure

Gross is longs plus shorts (total capital at work, leverage included); net is longs minus shorts (directional bet). The two dials a book's risk is actually steered with.

Gross margin

Gross profit divided by revenue: the share of each sales dollar left after the direct cost of what was sold. The first test of whether the product itself, before any overhead, makes money.

Halving

Bitcoin's scheduled 50% cut to new issuance every four years. The class has traded in rough cycles around it, on a sample size of four, which honest analysts say out loud.

Hedging ladder

The cost-ordered menu: hold less of the risk, own offsetting assets, hedge the specific exposure, buy explicit insurance. Professionals exhaust the free rungs before paying for the expensive ones.

Herding

The comfort of the crowd and the agony of standing apart. Aggregated, it builds momentum and bubbles; individually, it buys what compounded for others after it compounded.

High yield

Ratings below investment grade, politely 'high yield', historically 'junk'. Credit risk dominates and the bonds trade with a family resemblance to the issuer's equity.

Hindsight bias

The past reorganizing itself into having been obvious. Makes every crash 'predictable' afterwards and every lesson unlearnable; a dated decision journal is the only audit that survives it.

Hold-out sample

Data set aside untouched until final judgment. Consult it twice and it silently becomes training data; discipline about this separates research from curve-fitting.

Implied volatility

The movement forecast embedded in an option's price: run the pricing model backwards and out it comes. Comparing it to what the asset then actually does is the entire volatility trade.

Index methodology

The rulebook an index fund tracks: what qualifies, how it weights, when it rebalances. The rulebook IS the strategy; the fund's name is marketing.

Information ratio

Active return over tracking error: how much benchmark-beating a manager delivers per unit of benchmark-deviating. The fair exam for active management.

Insider transactions (Forms 3/4/5)

Filings that report officers' and directors' trades in their own stock within days. Insider buying with personal cash is one of the few signals with consistent academic support; selling has too many innocent reasons to read alone.

Intrinsic value

What an asset is worth from its own cash-generating ability, independent of the current market quote. The output a DCF attempts; the market price is the number it is compared against.

Intrinsic vs time value

Intrinsic value is what exercising now would be worth; time value is the price of the remaining possibility. Time value bleeds to zero at expiry, which is theta made visible.

Inverted yield curve

Short yields above long ones: the market pricing future rate cuts, which usually means it expects a slowdown. It has preceded most postwar US recessions, with long and variable lead times.

Investment grade

Ratings BBB- and above: default is rare, so rate risk dominates the bond's behavior. The line matters because many institutions may only hold paper above it, making downgrades across it forced-selling events.

IRR (internal rate of return)

The discount rate at which an investment's cash flows exactly break even against its price. The standard language of private equity returns, and what a bond's yield to maturity is.

Issuance vs burn

New tokens created (dilution) against tokens destroyed by fee burning. The net is the protocol's supply growth, the crypto analogue of share issuance versus buybacks.

IV crush

The collapse of implied volatility once the awaited event passes. A correct directional call on earnings can still lose money if the move was smaller than what the straddle had priced.

Kelly criterion

The bet fraction that maximizes long-run compound growth IF the edge estimate is exact. Overbetting it reduces growth and doubles toward ruin; practitioners run fractions of it and read it as a ceiling.

Leading indicators

The gauges that historically turn before the economy does: the yield curve, credit spreads, purchasing manager surveys, unemployment claims. Watched not to predict but to notice the regime changing slightly early.

Leveraged ETF decay

Daily-reset leverage compounds against holders in volatile flat markets: up 10% then down 9.1% is flat for the index and negative for the 2x. These are day-count instruments; held long, the decay is the product.

Limit order

An order that executes only at your price or better. The default in anything less than deeply liquid, because crossing spreads at market is a silent recurring fee.

Liquidation cascade

Forced closes triggering further forced closes as price gaps through leverage levels. Crypto's version of a margin-call spiral, and why open interest spikes resolve violently.

Liquidity (macro)

The quantity of money and collateral flowing through the system: central bank balance sheets, bank credit, deficits. The tide under all asset prices; most everything-rallies and everything-sells episodes are liquidity events.

Long-term holders

The cohort holding coins older than ~155 days, statistically the strong hands. Their accumulation and distribution phases have repeated across every cycle and are readable directly from the chain.

Look-ahead bias

Using information before it existed: trading on year-end earnings not filed until February, or on later-revised data. The subtlest versions hide in restatements and cleaned datasets.

Loss aversion

Losses hurting roughly twice as much as equal gains please. The engine of holding losers (selling makes the loss real) and of most drawdown-era mistakes.

Low volatility anomaly

Boring stocks matching or beating the market at lower risk, the opposite of what textbook risk-reward predicts. Fed by leverage constraints and the lottery preference for exciting names.

LTM (last twelve months)

The trailing year of financials, stitched from the latest filings. Deal multiples are computed on the target's LTM at announcement, never on projections the buyer hoped for.

LTV / CAC

Lifetime value of a customer against the cost of acquiring one, the core unit-economics ratio of subscription businesses. Healthy is a multiple of roughly three or more with an acquisition payback under two years.

Margin of safety

Buying below your estimate of value by enough to survive being partly wrong. The working admission that every valuation is an estimate.

Marginal producer

The highest-cost producer still needed to satisfy demand. Prices below its cost shut supply; prices above it invite new projects. Its economics anchor the long run.

Market impact

The price move your own trading causes. Grows with size and haste, invisible on paper, and the reason capacity limits exist.

Maturity wall

A cluster of debt coming due in a narrow window. Refinancing risk has a calendar, published in the debt footnote, and a fine company with everything due in a shut market is a default candidate.

Maximum drawdown

The deepest peak-to-trough loss in a period. The risk number investors quit over, and the one with cruel arithmetic: -50% needs +100% to repair.

MD&A

Management's Discussion and Analysis, Item 7 of the 10-K: management explaining in prose why results moved, decomposing changes into price, volume, currency, and deals. The highest-value section for understanding a business.

Mean-variance optimization

Markowitz's machine: given expected returns and covariances, solve for the best weights. Exact in math, fragile in practice, because it seeks out and leverages estimation error in its inputs.

Median vs mean

Comp sets quote medians because one 40x outlier drags a mean and the median resists it. When someone presents a mean multiple, look for the outlier doing the work.

Merger proxy (DEFM14A)

The filing shareholders receive before voting on a deal: background of the negotiation, the price's justification, and the fairness opinion. The primary source on how real acquisitions get priced.

Mid-cycle earnings

A cyclical company's earnings averaged across the cycle rather than taken at the current peak or trough. Valuing cyclicals on spot earnings buys high and sells low by construction.

Mid-year convention

Discounting each year's cash flow as if it arrives mid-year rather than on December 31st, since cash actually arrives throughout the year. A small refinement that adds roughly half a year of value.

Minimum variance portfolio

The mix that minimizes risk using only covariances, ignoring return forecasts entirely. Its strong live record is a quiet verdict on return forecasts.

Moat

A structural barrier that stops a company's high returns from being competed away: network effects, switching costs, brands and patents, cost advantage, or efficient scale. The durable question is never whether a business is profitable but what protects the profits.

Momentum factor

Recent 12-month winners keep winning over the following months, across markets and centuries of data. Behavioral in origin, brutal in its periodic crashes when markets whipsaw.

Monetary premium

The part of an asset's price owed to its use as money rather than its utility: most of gold's value and nearly all of bitcoin's. It has no cash-flow anchor, which is a sizing instruction, not a dismissal.

Monetizing a hedge

Harvesting a hedge that paid: rolling it, rebalancing the gains into fallen assets. Skipped, the protection evaporates with the rebound it just paid for.

Multiple testing

Test a hundred random ideas and about five pass at conventional significance by construction. The meaning of a result depends on how many trials produced it, the number nobody volunteers.

MVRV

Market value over realized value: how far price sits above the aggregate cost basis, i.e. how much unrealized profit is begging to be taken. Extremes flag euphoria and capitulation better than price alone.

NAV (net asset value)

Valuing a company by pricing its assets directly and subtracting debt: properties at market cap rates for a REIT, reserves at forward prices for oil and mining. The gap between a stock and its NAV is those sectors' core debate.

Negative skew

A return profile of many small gains and rare large losses, the shape of selling insurance. Carry trades and option selling share it; averages flatter it, and sizing must respect the tail rather than the average.

Net debt

Total debt minus cash and equivalents. The bridge between enterprise value and equity value; getting it wrong misprices every levered company, in proportion to its leverage.

Net working capital

The cash tied up in day-to-day operations: receivables and inventory, minus the payables that finance them. A growing business usually absorbs cash into working capital, which is why its change is subtracted in free cash flow.

Network effects

When each additional user makes the product more valuable to every other user, as in marketplaces and exchanges. The strongest moat type when real, and the most claimed when not.

Nominal vs real

Nominal counts dollars; real counts purchasing power, which is nominal with inflation removed. The rule: discount nominal cash flows at nominal rates and real at real, never mixed.

Non-GAAP measures

Company-defined numbers like adjusted EBITDA that exclude items the company chooses to exclude. Filings must reconcile them to the audited figure; the reconciliation, and especially its size, is the informative part.

NOPAT

Net operating profit after tax: operating profit (EBIT) with tax removed, as if the company had no debt. It is the starting point for FCFF because it strips financing choices out of the operating result.

Normalized earnings

Earnings with one-time items stripped out on a consistent basis across a peer set: restructurings, litigation, gains on sales. The step that makes a comp set mean something.

Open interest

The count of derivative contracts outstanding: total leveraged exposure. Rising with price means a levered move; a cascade of forced closes is how levered moves end.

Operating leverage

How much profits amplify a change in revenue because costs are fixed. High operating leverage makes good years great and bad years terrible; it is a magnitude, not a virtue.

Operating margin

Operating income (EBIT) divided by revenue: the share of each sales dollar left after ALL costs of running the business. The standard measure of business-model profitability.

Opportunity cost

The return of the best alternative you give up by choosing this one. Discount rates are opportunity costs; that is why they rise with risk, since riskier projects must beat riskier alternatives.

Overconfidence

Certainty rising faster than accuracy, peaking exactly when sizing discipline matters most. The reason caps exist that do not care how sure you are.

Overfitting

Fitting the noise of one sample rather than a repeatable signal. The tell is fragility: real edges survive parameter wiggles and date shifts; overfit ones shatter.

P/TBV

Price to tangible book value: market price over book value with goodwill and intangibles stripped out. The standard bank multiple, read against ROE, since a bank earning above its cost of equity deserves more than tangible book and one earning below deserves less.

Pair trade

Long one asset, short a related one, isolating the relative claim and shedding the market's direction. The honest expression of 'better than its peers'.

Parameter plateau

An edge that persists across neighboring parameter values. Plateaus suggest signal; a sharp peak at one magic number is noise wearing a crown.

Perpetual future

Crypto's dominant instrument: a future that never expires, tethered to spot by periodic funding payments between longs and shorts.

Perpetuity

A stream of cash flows assumed to continue forever. A perpetuity growing at a steady rate g and discounted at rate r has a finite value of next year's cash flow divided by (r minus g).

Point-in-time data

Data as it stood on each historical date, including companies later delisted and numbers later revised. The antidote to survivorship and look-ahead, and rarely what free datasets are.

Porter's five forces

The standard frame for judging an industry's profit structure: rivalry among incumbents, threat of new entrants, supplier power, buyer power, and substitutes. It explains why some industries enrich everyone in them and others no one.

Position sizing

How much. The decision that determines survival, made by rule (risk budgets, volatility parity, caps) precisely because the moments it matters most are the moments judgment is worst.

Pre-mortem

Assume the position failed and explain why, before entering. The three most plausible failure stories are the real risk list, and better than any generic one.

Premium (options)

What the option buyer pays and the seller keeps regardless of outcome. The buyer's maximum loss and the seller's maximum gain.

Present value (PV)

What a future amount of money is worth today, after shrinking it for the time you must wait and the risk you must bear. A dollar promised in five years is worth less than a dollar in hand; present value says exactly how much less.

Priced in

Already reflected in the price. Markets move on the gap between events and expectations, never on events alone, which is why being right about the economy and losing money is the most common macro outcome.

Proxy statement (DEF 14A)

The filing before the annual meeting covering governance: who sits on the board, how executives are paid and against which targets, and what shareholders will vote on. Pay structure predicts behavior.

Purchasing power parity

The long-run tendency of exchange rates toward equalizing what money buys across borders. Useless for timing, excellent for knowing which side of expensive a currency starts from.

Put option

The right, without obligation, to sell at the strike by expiry: insurance on a price. Under a concentrated position it sets a floor for a known premium.

Quality factor

Profitable, stable, conservatively financed companies outperforming what their risk justifies. The market systematically underprices boring.

Rate differential

The gap between two economies' interest rates, the fast anchor of exchange rates. The two-year government yield spread tracks major pairs remarkably well over months.

Re-underwriting

Re-doing the thesis from scratch as if entering today, usually triggered by a violent move in either direction. The honest answer to 'is there new information, or only new pain?'

Reaction function

What data makes a central bank move, and how much. The skill in reading central banks is learning theirs, not parsing adjectives in statements.

Real interest rates

Nominal rates minus expected inflation: the true price of money. The main driver of gold (the opportunity cost of a yieldless asset) and, in liquidity-driven regimes, of most risk assets.

Realized price

The average acquisition cost of all coins, weighting each at its last on-chain move: the market's aggregate cost basis, computable only because the ledger is public. Spot meeting it has historically marked bear-market floors.

Rebalancing

Trading back to target weights on a schedule or at thresholds: mechanically selling what rose and buying what fell. The discipline that keeps an allocation being the allocation you chose.

Recency bias

The last regime becoming the forecast: maximum equities after the rally, maximum cash after the crash. The bias factor investors harvest from everyone else.

Recovery rate

Cents on the dollar creditors actually receive after a default, historically ~40 for unsecured bonds and more for secured loans. Expected loss is default probability times one minus this.

Regime

A market era with its own rules: the inflation seventies, the QE 2010s. Backtests assume tomorrow is drawn from the sample's regime; report performance per named regime instead of one blended number.

Residual income

Valuing equity as book value plus the present value of earnings above the required return on that book. Earning exactly the cost of equity adds nothing; only the excess creates value. The academic backbone of bank valuation.

Retained earnings

The running total of every profit the company ever kept rather than paid out. The line on the balance sheet where the income statement's history accumulates.

Return on equity (ROE)

Net income divided by shareholders' equity: what the owners earn on the capital they have in the business. High ROE sustained for years is the signature of a strong business or heavy leverage; the analysis is telling those apart.

Reverse DCF

Running the machine backwards: instead of estimating value from assumptions, solve for the growth and margins the current price already implies, then judge whether those are beatable. Often more honest than the forward version, because it removes your favorite input.

Risk budget

The loss a position or book is permitted to plausibly cost, decided before entry. Sizing in risk units instead of dollars is the professional habit that keeps one mistake survivable.

Risk parity

Weighting so each asset contributes equal RISK rather than equal dollars: a 60/40 is ~90% equity risk in disguise. Honest about diversification; dependent on leverage and on bonds staying diversifiers, which 2022 tested.

Risk reversal (FX)

The implied-volatility gap between out-of-the-money calls and puts on a currency: the options market's directional fear gauge, and a crowding check before entering.

Risk-free rate

The yield on the safest asset in the currency of the cash flows, in practice a long-term government bond. It is the floor every other required return builds on.

ROIC

Return on invested capital: after-tax operating profit over the debt-plus-equity capital tied up in operations. The cleanest single measure of business quality, and value is created only where ROIC exceeds the cost of capital.

Roll yield

The gain or bleed from rolling an expiring future into the next month, set by the curve's shape. Over years it has dominated commodity index returns, deciding whether being right on spot made or lost money.

Rule of 72

The mental shortcut for doubling time: 72 divided by the annual rate. At 8%, money doubles in about nine years.

Scaling in

Building a position in planned increments as evidence confirms or price improves, rather than all at once. Buys optionality on your own fallibility.

Securities lending

Funds lending their holdings to short sellers for a fee, which offsets costs (and explains some funds beating their own expense ratio). The revenue split and collateral policy are in the fine print.

Seniority

The bankruptcy queue: secured lenders, unsecured bondholders, subordinated debt, preferred, then equity last. The same company's different claims can deserve opposite verdicts because they stand in different places.

Sensitivity analysis

Re-running a valuation across a grid of assumptions, classically discount rate against terminal growth, to see the range of answers rather than one false-precise point. If the verdict flips inside plausible assumptions, the model has not settled the question.

Sharpe ratio

Excess return over the risk-free rate, per unit of volatility. Around 1 is genuinely good long-run; above 2 deserves an audit. Gameable by strategies whose defining loss has not happened inside the sample yet.

Skew

Which tail of the return distribution is long. Negative skew (carry, option selling): many small wins, rare disasters. Positive (trend, long options): many small losses, rare windfalls. Identical Sharpes with opposite skews are opposite products.

SOPR

Spent output profit ratio: whether coins moving on-chain today are being sold at a profit or a loss. Persistent readings below one are capitulation in progress.

Sortino ratio

Sharpe with only downside deviation in the denominator, so upside surprises are not punished as risk. Fairer to asymmetric strategies.

Staking yield

The return for locking tokens to secure a proof-of-stake network: the asset class's native benchmark rate, against which other crypto yields get judged.

Steelmanning

Arguing the opposing case at its strongest, not its weakest. The intellectual habit that separates testing a thesis from decorating it.

Stock-bond correlation

In low-inflation regimes bonds hedge stocks (bad growth news brings rate cuts); in high inflation the correlation flips positive and the classic 60/40 loses both halves at once, as 2022 demonstrated. Which regime you are in decides whether your diversification exists.

Stop loss

A pre-set exit on price. Controls damage mechanically but sells at maximum pessimism on no new information; professionals pair stops with sizes so the stop distance equals the risk budget, or prefer falsifier-based exits.

Straddle

Buying the call and the put at the same strike: a bet on movement without direction. Its price before an event states, in dollars, the move the market already expects.

Strategic asset allocation

The long-term policy mix across asset classes, set from objectives and regime logic, touched rarely. The single decision that explains most of a diversified portfolio's outcome.

Strategic vs financial buyer

A strategic buyer operates in the industry and can pay for synergies; a financial buyer (private equity) pays what leverage and exit multiples justify. Strategics usually outbid, which is why the buyer mix in a precedent set matters.

Strike price

The contracted transaction price of an option: the deductible on the insurance. Choosing it is choosing how much pain you self-insure before protection starts.

Sum-of-the-parts (SOTP)

Valuing a multi-business company piece by piece, each segment by its own industry's method, then summing and netting corporate costs and debt. The tool for conglomerates and the arithmetic behind every break-up thesis.

Supply-demand balance

The commodity analyst's model: production plus inventory change must equal consumption, quarter by quarter. Price is the negotiator that keeps the identity true when the balance tightens.

Survivorship bias

Testing on today's members means testing only on survivors; the delisted and bankrupt are missing, and they are what a strategy would have bought on the way down.

Switching costs

The money, time and risk a customer would incur to leave. High switching costs show up in the numbers as retention; the claim without the retention is just hope.

Synergies

The cost cuts and revenue gains a buyer expects from combining companies. Part of their expected value is competed away to the seller in an auction, which is why deal prices embed optimism the combined company must then deliver.

Tail hedge

A standing position whose job is to pay in crashes: far out-of-the-money puts, long volatility. A drag most years by design; the premium buys the year that matters.

Tangency portfolio

The frontier portfolio with the highest Sharpe ratio, found where a line from the risk-free rate touches the frontier. Theory says hold it and scale with cash or leverage; practice says estimate it humbly.

Term structure (futures)

The strip of futures prices across delivery months. In commodities its SHAPE, not the spot level, carries most of the information and most of the return.

Terminal value

The value of all cash flows beyond the explicit forecast, collapsed into a single number at the forecast's end. It routinely carries more than half of a DCF's total value, which is why its assumptions deserve the most scrutiny.

Terms of trade

Export prices over import prices. Commodity exporters' currencies ride their commodities closely enough that traders use the currencies as proxies.

Theta

The daily cost of time passing: what option buyers pay in rent and sellers collect. Short-dated out-of-the-money options are almost all theta.

Threshold bands

Rebalancing when a sleeve drifts a set distance from target rather than on a calendar. Fewer trades, better tax outcomes, same discipline.

Time horizon

How long capital can genuinely wait, set by the catalyst and by the holder's real constraints. Instruments and sizing inherit it; a two-year story in three-month options is a thesis fighting its own clock.

Time stop

Exiting because the catalyst window closed without the catalyst. The market heard the story and shrugged; capital has better uses than waiting indefinitely.

Time value of money

The principle that money now beats the same money later, because money now can be invested, and because later is uncertain. All of valuation is this principle applied carefully.

Tokenomics

A token's economic constitution: supply schedule, unlock calendar, and whether protocol fees buy back, burn, or bypass the token. The first read, because a winning protocol with value routed elsewhere leaves the token worthless.

Total addressable market (TAM)

The revenue available if a company served every possible customer. Useful as a ceiling and abused as a pitch; the discipline is asking what fraction is realistically serviceable and at what cost.

Tracking difference

What a fund actually lagged (or beat) its index over a period, netting fees, replication choices and securities-lending income. The honest cost number, and often smaller OR larger than the expense ratio.

Trading multiple

Price standardized by a unit of performance so unlike-sized companies compare: EV/EBITDA, P/E, EV/revenue. Ten times EBITDA means the market pays ten dollars per dollar of annual EBITDA.

Transaction costs

Spreads, market impact, borrow fees and taxes: what paper trading ignores. High-turnover strategies are routinely profitable before costs and worthless after.

Unaffected price

The target's stock price before leaks and speculation began moving it toward a rumored deal. Premiums are measured against it, since the price the day before signing already contains half the news.

Uncovered interest parity

The theory that rate differentials should be erased by currency depreciation. Empirically it fails for years at a time (the forward premium puzzle), which is why carry exists as a strategy.

Unit economics

The profit and loss of one atomic unit of the business: one store, one subscriber, one policy. Aggregate growth can hide units that each destroy value; unit economics is how that is caught early.

Value at risk (VaR)

The loss exceeded only X% of the time, banking's standard gauge. Says nothing about how bad the exceeding days are, which is what expected shortfall repairs.

Value factor

The long-run tendency of statistically cheap stocks to beat expensive ones. Paid either as compensation for distress risk or by other investors' overreaction; a decade of failure per generation is part of the deal.

Variant perception

A specific belief that differs from consensus, held with evidence, plus a reason the market is wrong. The only source of excess return; the discipline is stating it in one sentence.

Vega

Sensitivity to implied volatility: profit and loss from the fear gauge moving with price unchanged. Long options are long fear; short options are short it.

Volatility

Annualized standard deviation of returns: how widely outcomes scatter. The industry's risk currency: computable and comparable, blind to direction, regime shifts and tails.

Volatility drag

The gap between average and compound returns, roughly half the variance: +50% then -33% averages +8.5% and compounds to nothing. The mathematical reason wild rides underperform their marketing.

Volatility risk premium

The long-run finding that implied volatility usually exceeds realized: options, like insurance, cost a bit more than they pay out on average, because sellers bear the tail. Buyers' theses must clear this bar.

Volatility targeting

Holding the portfolio's risk level constant by scaling exposure down in storms and up in calm. Changes when you take risk rather than where; sells after losses by construction.

WACC

Weighted average cost of capital: the blended required return of everyone financing the company, equity and debt weighted by their market values. It is the discount rate matched to FCFF, because both belong to all capital providers.

Walk-forward testing

Fit on a rolling window, trade the next, repeat: the closest simulation of how research meets the future.

Yield curve

Government yields plotted against maturity. Upward-sloping is the normal state; its shape is the bond market's forecast of growth, inflation and policy.

Yield to maturity

The single rate that makes a bond's remaining coupons and principal worth exactly its current price: the bond's IRR if held to the end and paid in full.