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Key Takeaways
- The expiration date is the contract deadline, when an option either converts to settlement value or ceases to exist.
- Time remaining is part of the option premium, and that extrinsic value converges to zero as expiration approaches.
- Standard monthly equity options expire on the third Friday, adjusted for exchange holidays, while weekly and daily listings create many other expiration dates.
- Exercise by exception exercises an equity option that finishes at least $0.01 in the money unless you file contrary instructions by the broker’s cutoff, and the broker applies its own account rules first.
- Expiration choice should extend beyond the trader’s catalyst and leave enough time for the forecast to develop.
What is an option’s expiration date?
The expiration date is the end of an option’s contractual life. It identifies when the series enters its final exercise and settlement process, after which the option is exercised, settled, or expires without value. Underlying, strike, call or put, and expiration together define the standard series.
Two calls with the same strike and different expirations have different premiums, Greeks, volume, and open interest. Choose the date alongside the price target and holding period.
When do options expire?
Standard monthly equity options use the third-Friday cycle, adjusted for exchange holidays. Weekly and other listings add more dates, so confirm the exact series, expiration included, in the option chain before the order.
Record three distinct points: last trading time, exercise-instruction deadline, and settlement timing. Take them from the product specification and your broker’s procedures, and set the exit before the earliest one.
American-style holders have exercise rights before expiration; short writers receive assignments. European-style exercise takes place at the contract’s specified expiration point. Standard equity contracts deliver shares, while cash-settled products use their official settlement value and multiplier.
Worked Example
XYZ trades at $100. A trader buys one 105 call with 30 days to expiration for $2.50 per share, a $250 cost for the standard 100-share contract. The expiration breakeven is $107.50.
- Ten days before expiration XYZ trades at $104 and the call is quoted at $1.20, worth $120 while still out of the money.
- Selling at that point would realize a $130 loss against the $250 paid.
- On expiration day XYZ closes at $108, so the call finishes $3.00 in the money and worth $300.
- ($108 − $105 − $2.50) × 100 = $50 gross profit.
At the $108 expiration reference, the call has $300 intrinsic value and $50 gross profit against its $250 premium. At a $104 reference, its payoff is zero. Compare these expiration results with the earlier $120 closing value to plan the exit.
How does expiration determine payoff?
For a call, final intrinsic payoff per unit is max(settlement reference − strike, 0). For a put, it is max(strike − settlement reference, 0). Multiply by the contract’s multiplier and quantity.
A 105 call bought for $2.50, with a 100 multiplier, costs $250. Its expiration breakeven is $107.50. A $108 final reference produces a $300 payoff and $50 gross profit. A $104 reference produces a zero payoff and a $250 loss.
Before expiration, use the market sale price to calculate a closing trade’s result. Selling that call at $1.20 receives $120 and realizes a $130 loss.
What happens when an equity option expires?
OCC’s exercise-by-exception procedure processes qualifying expiring positions using the closing reference. Your broker's procedures and your instructions decide what happens to your contract, so submit the closing or exercise action before the broker’s cutoff.
Exercise of one standard 105 call purchases 100 shares for $10,500, and from then on the account gains or loses $100 for every $1 the stock moves. Exercise settlement occurs on the next business day.
How do you choose an expiration date?
Compare the catalyst date, planned holding period, premium, spread, and Greeks. A short-dated contract near the strike carries the most gamma and theta, so its value swings fastest, while a longer date carries more vega and moves more with implied volatility.
Inspect the position before the event, after the event, and at expiration in the options profit calculator, then set the exit around the actual trading and exercise deadlines.
Limitations of the expiration date
- Set the exit from the earliest deadline. Last trading time, the broker’s exercise cutoff and settlement timing can differ, and some AM-settled index series stop trading before their settlement date.
- Plan exits from the market price along the way. Expiration payoff ignores the path: the example call is worth $120 ten days out with the stock at $104 and $300 at a $108 finish.
- Buy enough time for the forecast. Extrinsic value converges to zero as expiration approaches, so a short-dated contract leaves little room for a forecast to develop.
- Compare weekly and monthly listings before you pick a date. Liquidity, open interest and time decay can differ between them, so the same strike can behave differently by date.
- Close or fund an in-the-money position before the cutoff. An in-the-money finish can create a stock position: exercise of one 105 call buys 100 shares for $10,500.
Bottom line
The expiration date ends an option’s contractual life, after which an open contract is exercised, settled, or retired without value. Choose a date that extends beyond the catalyst with time for the forecast to develop, and record the last trading time, exercise cutoff, and settlement timing so the exit happens on your schedule.
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