Options Trading

Options Trading Fundamentals

Understand contracts, Greeks, and strategies before you trade.

Options are powerful instruments that require precise knowledge before capital is at risk. This curriculum covers every foundational layer: reading an option contract, understanding how time value and volatility are priced in, interpreting the Greeks, and building multi-leg strategies such as spreads, covered calls, and iron condors — alongside the risk management principles that keep losses bounded.

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What this hub covers

Options are contracts that grant the right to buy or sell an underlying asset at a specific price before a specific date. This hub covers everything from first principles — contract anatomy, pricing mechanics, and the Greeks — through practical strategies including covered calls, protective puts, vertical spreads, and iron condors, plus risk management and tax treatment.

Key principles

Curriculum

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FAQ

What is an option contract?

An option contract gives the buyer the right, but not the obligation, to buy (call) or sell (put) an underlying asset at a specified strike price on or before an expiration date. The buyer pays a premium for this right; the seller (writer) collects that premium and takes on the corresponding obligation.

What does delta mean in options?

Delta measures how much an option's price is expected to change for a one-dollar move in the underlying asset. A call option with a delta of 0.50 would be expected to gain approximately $0.50 in value if the stock rises by $1.00. Delta also approximates the probability that the option expires in the money.

What is implied volatility?

Implied volatility (IV) is the market's expectation of future price variability, expressed as an annualized percentage, backed out from current option prices using a pricing model such as Black-Scholes. Higher IV means the market expects larger price swings and therefore prices options more expensively.

Are covered calls risky?

A covered call caps the upside on a stock position you already own but does not add downside risk beyond owning the stock itself. The risk is opportunity cost: if the stock surges past the strike price, gains above that level are forfeited. The position can lose money if the stock declines more than the premium collected.

What is theta decay?

Theta measures how much an option's premium declines each day purely from the passage of time, all else equal. An option that is out of the money loses its time value as expiration approaches, with decay accelerating in the final weeks and days. Long option buyers pay theta decay; short option sellers collect it.

What is the difference between American and European options?

American-style options can be exercised on any trading day up to and including expiration. European-style options can only be exercised at expiration. Most individual equity options in the US are American-style; most index options (SPX, NDX) are European-style. Early assignment risk is relevant for American-style options sold short.