What is Options Expiration?
Definition
Options expiration is the date on which an option contract becomes void and the right to buy or sell the underlying asset ceases to exist. Standard monthly options expire on the third Friday of each month, while weekly options expire every Friday.
Detailed Explanation
Options have fixed lifespans, making them fundamentally different from stocks. Standard monthly options have been listed since the 1970s. Weekly options (weeklys), introduced in 2005, now account for over 40% of options volume due to their lower cost and precise expiration targeting. LEAPS (Long-term Equity Anticipation Securities) have expirations up to 2-3 years out.
Time decay (theta) accelerates as expiration approaches. An option loses roughly one-third of its time value in the last 30 days, and time decay is particularly acute in the final week. This makes buying options near expiration risky for directional traders but profitable for option sellers who collect the decaying premium.
Expiration week often brings increased volatility, particularly for heavily optioned stocks. The phenomenon of max pain — the strike price where the most options expire worthless, costing option buyers the maximum — draws attention as dealers hedge their positions. Massive open interest at specific strikes can create pin risk, where the stock gravitates toward heavily populated strikes.
At expiration, in-the-money options are automatically exercised by the OCC (Options Clearing Corporation) if they are at least $0.01 in the money. This means call holders will buy shares and put holders will sell shares at the strike price. Traders who don't want exercise should close their positions before expiration.
Frequently Asked Questions
What happens if I forget about my expiring options?
Should I buy weekly or monthly options?
Related Terms
Call Option
A call option gives the holder the right, but not the obligation, to buy a specified number of shares at a predetermined price (strike price) before a specific expiration date. Investors buy calls when they expect the stock price to rise, as calls increase in value as the underlying stock appreciates.
Put Option
A put option gives the holder the right, but not the obligation, to sell a specified number of shares at a predetermined strike price before expiration. Investors buy puts when they expect a stock price to decline or want to protect an existing stock position from downside risk.
Strike Price
The strike price (or exercise price) is the predetermined price at which an option holder can buy (for calls) or sell (for puts) the underlying asset. It is the most important factor in determining an option's value and risk/reward profile.
Options Premium
The options premium is the price paid by the buyer to the seller for an option contract. It consists of intrinsic value (how much the option is in-the-money) and extrinsic value (time value plus volatility value). The premium represents the maximum loss for option buyers and maximum gain for option sellers.
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Disclaimer: The information on this page is provided for educational and informational purposes only and does not constitute investment advice. AI-generated analysis may contain errors or inaccuracies. Always conduct your own research and consult a qualified financial advisor before making investment decisions.
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