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Clear, practical explanations of options concepts and strategies — with interactive examples you can try yourself in OptionLab.
Options Glossary and Quick AnswersShort answers to options terms and questions, with search and a link to the matching article or tool.- What Is a Call Option? Definition, Example & Payoff | OptionLab
A call option gives the holder the right to buy an asset at a fixed strike price. Learn how call options work, see a worked example, and try one yourself.
- What Is Implied Volatility? IV Explained With a Clear Example | OptionLab
What is implied volatility (IV) in options trading? A clear definition, how IV is derived from option prices, how it affects call and put premiums, IV vs. historical volatility, and a worked example.
- Index Options vs. Stock Options: The Key Differences | OptionLab
Index options give exposure to a whole market and settle in cash; stock options cover 100 shares of one company. Compare style, settlement, size and risk.
- How to Read an Option Chain: Bid, Ask, Last, Volume, Open Interest | OptionLab
An option chain lists every strike for one expiration. What bid, ask, last, volume and open interest mean, what the spread costs, and how to read a chain step by step.
- European vs. American Options: Exercise, Assignment, Settlement | OptionLab
European options can be exercised only at expiration, American options on any business day. What that changes for exercise, assignment, settlement and value.
- Option Expiration: An Option's Life From Purchase to Expiry | OptionLab
What happens to an option between purchase and expiration: time value decay, closing or rolling, and what happens at expiry to in-the-money and out-of-the-money options.
- In the Money, At the Money, Out of the Money: Moneyness | OptionLab
In the money, at the money and out of the money describe where the price sits against the strike. The rules for calls and puts, and why ITM is not profit.
- Option Premium: Intrinsic Value vs. Time Value | OptionLab
An option's premium is intrinsic value plus time value. Learn how to split a premium, why time value shrinks toward expiration, and what it means for buyers and writers.
- What Is a Strike Price? How to Choose One to Analyze | OptionLab
The strike price is the fixed price at which an option can be exercised. See how the strike changes the premium, the breakeven and the payoff, with a worked comparison.
- Buying vs. Writing Options: Rights, Obligations and Risks | OptionLab
Buying an option gives a right for a premium; writing one gives the premium for an obligation. Compare the four positions, their payoffs, margin and risks.
- Who Trades Options? Buyers, Writers, Hedgers, Market Makers | OptionLab
Who is on the other side of an options trade? Buyers, writers, hedgers, speculators and market makers, what each wants, and a worked hedging example with numbers.
- What Are Derivatives? Options vs. Stocks vs. Futures | OptionLab
Derivatives are contracts whose value comes from another asset. Compare stocks, futures and options: what you own, what you owe and how each one gains or loses.
- What Is an Option? Meaning, Origins and Uses | OptionLab
An option is a contract giving the right, not the obligation, to buy or sell at a set price. Learn why options exist, how they work and what they are used for.