Glossary

A plausible route where the trade behaves badly before expiration.

The combined risk of all open positions together.

An option that can be exercised before expiration.

The lowest current price a seller is willing to accept.

The seller is selected to fulfill the contract after the buyer exercises.

The short option holder is required to fulfill the contract because the other side exercised.

The longer expiration that usually retains more time value.

The most likely scenario in the trader's judgment.

A structure that benefits from a moderate move down.

A market view that prices are more likely to fall.

The highest current price a buyer is willing to pay.

The difference between bid and ask; a practical trading cost and liquidity signal.

The gap between the quoted buying price and selling price.

A setup where the market is effectively pricing two very different post-event states rather than one smooth path.

A pricing model where the underlying can move to a finite set of values at each step.

A foundational option-pricing model for European options under simplifying assumptions.

A structure that benefits from a moderate move up.

A market view that prices are more likely to rise.

A multi-leg structure designed to profit most when the underlying finishes near a central strike.

A spread using the same strike but different expiries, typically short near-dated and long longer-dated options.

An option associated with the right to buy the underlying.

The shares are delivered because the short call is exercised.

The ongoing gain or loss associated with holding the position over time.

The financing-related cost or benefit embedded in holding or pricing an asset over time.

Settlement through a cash difference rather than delivering the underlying.

A known or suspected event that can change volatility expectations.

The post-trade system that records positions, guarantees performance, and handles exercise and assignment mechanics.

A rule-based change to strike, multiplier, or deliverable after events such as stock splits so the contract remains economically fair.

How many underlying units one option contract controls, often 100 shares.

Long stock combined with a short call on the same underlying.

Out-of-the-money puts bought for downside protection.

The ordered sequence from thesis, to structure, to pricing, to risk, to execution quality.

A position whose maximum loss is structurally capped.

The approximate change in option price for a one-unit move in the underlying.

The stock position used to replicate or hedge the option locally.

A position with net Delta close to zero.

A spread that changes both strike and expiry, mixing directional and time-structure views.

Expected cash distributions from the underlying during the life of the option.

A hedging process that must be updated repeatedly as market conditions change.

Exercising before expiration, possible for American-style options.

A situation where exercising now is worth more than preserving the option's remaining time value.

An option that can be exercised only at expiration.

A sharp repricing tied to a catalyst such as earnings, guidance, or a regulatory decision.

Extra implied volatility priced into options ahead of a known event.

The date after which a new buyer no longer receives the upcoming dividend.

A rule that a trade cannot proceed until certain conditions are checked.

The holder chooses to use the rights in the option contract.

The last date on which the option's contractual life matters.

A nickname for a market indicator that rises when expected uncertainty rises.

The downside level below which losses are largely capped.

The nearer expiration used in a calendar structure.

The rate at which Delta changes when the underlying moves.

A construction that aims to reduce one Greek exposure by offsetting it with another position.

Volatility measured from past realized price moves.

The volatility level backed out from the market price of the option.

The volatility number backed out from the market price of an option.

The volatility backed out from current option prices.

A complete trade analysis using all major dimensions of the course.

A model or surface used to estimate sensible prices and hedge inputs between actively quoted options.

The value from immediate exercise.

A situation where near-dated implied volatility is higher than longer-dated implied volatility.

Moneyness labels describing whether immediate exercise would already be favorable.

A sharp drop in implied volatility, often after a known event.

How often IV has been lower than the current reading over a lookback period.

Where today's IV sits within a historical high-low range.

Buy a call to gain upside exposure with loss limited to premium.

The buyer's side of the option, paying premium for optionality.

Buy a put to gain downside exposure or insurance with loss limited to premium.

A position that tends to benefit from larger-than-priced movement or rising implied volatility.

A minimum logically possible option value under simple no-arbitrage reasoning.

Collateral required to support positions, especially short option positions.

A liquidity provider quoting bid and ask prices so traders can transact.

The center price around which a butterfly earns its best payoff.

A hedge choice aimed at reducing realized hedge noise, often using observed surface behavior instead of a purely flat-vol assumption.

The risk that your pricing or hedge framework is too simple for the way volatility is actually being quoted and traded.

Delta tends to become less favorable as the market moves.

Pricing logic that prevents risk-free free-money opportunities.

A deliberate choice to stand aside because the setup is weak or unclear.

A disciplined conclusion that the setup is not strong enough to justify risk.

A responsibility you must fulfill if the other side exercises.

The risk created by having to perform if the option is exercised against you.

How many contracts remain open rather than closed out.

The number of outstanding option contracts in a series.

A contract giving one side the right to act under specified terms.

The market price of the option.

A table showing available option contracts across strikes and expiries.

An inequality or adjusted relationship used when the clean European no-dividend parity equality no longer applies directly.

How profit and loss change across different final underlying prices.

A chart showing profit or loss at expiration across different underlying prices.

Settlement through actual delivery or receipt of the underlying.

A rule or broker control that can restrict how large a concentrated option position or exercise activity may become.

Delta tends to become more favorable as the market moves.

The upfront price paid to buy the option.

The price paid to buy the option today.

The value today of the dividends expected during the option's life.

A practical view of whether an option looks rich, cheap, or unclear after checking several dimensions.

Consistent decision-making behavior independent of mood or noise.

Long stock combined with a long put for downside protection.

An option associated with the right to sell the underlying.

The no-arbitrage relationship linking a European call and put with the same strike and maturity.

How the market actually moves and reprices through time.

The sequence connecting market view, contract reading, chain reading, risk, and decision.

Adjusting the hedge as Delta changes over time.

Building a portfolio of stock and cash that matches the option payoff.

The sensitivity of option value to changes in interest rates.

A choice you may use, but do not have to use.

The maximum loss you allow one trade to contribute to the account.

The combined pattern of how a position reacts to key market forces.

The base market interest rate used in option pricing logic.

A pricing probability, not the market's true forecast probability.

Pricing by discounting expected payoff under a special no-arbitrage probability measure.

Closing one option position and opening another with a new strike, expiry, or both.

A concrete practice setup used to test applied understanding.

Sell a call to collect premium while taking on upside obligation.

The seller's side of the option, receiving premium in exchange for obligation.

Sell a put to collect premium while taking on downside obligation.

A position that tends to benefit from calmer-than-priced outcomes or falling implied volatility.

A scenario where the thesis is directionally correct but the move arrives too slowly to help the option structure enough.

Directional exposure translated into an equivalent number of shares.

A predefined condition for closing a losing trade.

Typically buying a call and a put at the same strike and expiry.

Typically buying a call and a put at different out-of-the-money strikes.

A deliberate evaluation of how the trade performs under unfavorable conditions.

The contractual price used if the option is exercised.

The contractual price written into the option.

A position built from other instruments to replicate a desired payoff.

A combination of options and sometimes stock that reproduces the payoff shape of another instrument or stance.

A combination of options and sometimes stock that recreates the payoff behavior of another instrument or stance.

A predefined condition for closing a winning trade.

How implied volatility changes across maturities.

The Greek measuring time decay.

The sensitivity of option value to the passage of time, all else equal.

The loss of time value as expiration approaches.

How long remains before expiration.

The portion of option price above intrinsic value.

The asset the option is written on.

The current market price of the asset the option is tied to.

A maximum logically possible option value under simple no-arbitrage reasoning.

The sensitivity of option value to a change in implied volatility.

A spread using options of the same expiry but different strikes.

A market-based estimate of expected S&P 500 volatility over the coming month.

How much the underlying is expected to move.

A tilted implied-volatility curve across strikes.

A curve where implied volatility is higher in the wings than near the center.

The combined map of implied volatility across strikes and maturities.

A trade focused more on move size and uncertainty than on one direction.

How many contracts traded during the current session.