Expiration is the date when an option contract ceases to exist. On this date, in-the-money (ITM) options are automatically exercised, and out-of-the-money (OTM) options expire worthless. The expiration date is set when the option is created and cannot be changed. Most stock options expire on the third Friday of the month.
- Date when option contract ends
- ITM options auto-exercise; OTM expire worthless
- Time decay (theta) accelerates near expiration
How Expiration Works
What happens on expiration day:
Expiration Scenarios:
Stock at $105, You own $100 Call:
- Option is ITM by $5
- Auto-exercised: You buy 100 shares at $100
- Net cost: $100 × 100 = $10,000
- You now own shares worth $10,500
Stock at $95, You own $100 Call:
- Option is OTM
- Expires worthless
- You lose premium paid
- No shares acquired
Stock at $105, You own $100 Put:
- Option is OTM
- Expires worthless
- You lose premium paid
Quick Reference: Expiration Outcomes
| Option | Stock vs Strike | At Expiry |
|---|---|---|
| Long Call ITM | Stock > Strike | Exercise or sell |
| Long Call OTM | Stock < Strike | Expires worthless |
| Long Put ITM | Stock < Strike | Exercise or sell |
| Long Put OTM | Stock > Strike | Expires worthless |
Example: Managing Expiration
Two Weeks to Expiry:
| Days Left | Premium | Time Value | Theta |
|---|---|---|---|
| 14 | $3.00 | $1.50 | -$0.08 |
| 7 | $2.25 | $0.75 | -$0.12 |
| 3 | $1.75 | $0.25 | -$0.20 |
| 1 | $1.55 | $0.05 | -$0.25 |
| 0 | $1.50 | $0.00 | N/A |
Time value decays to zero at expiration.
Options expiration is when the contract ends. ITM options are automatically exercised—you get shares. OTM options expire worthless—you lose the premium. Time decay accelerates dramatically in the final weeks, so most traders close positions before expiration.
Expiration Types
Monthly Expirations
Third Friday of each month. Most liquid, most volume.
Weekly Expirations
Every Friday. Shorter duration, higher theta decay.
LEAPS
Long-term options (1-2 years). Lower theta decay.
Index Options
Some expire Thursday. Check specific product.
Expiration Risks
Gamma Risk
Near expiration, ATM options have extreme gamma. Small moves cause large P/L swings.
Pin Risk
Stock settles exactly at strike. Uncertainty about exercise/assignment.
After-Hours Risk
Stock moves after close but before assignment cutoff.
Assignment Risk
Short options can be assigned early (American style), especially ITM near expiration.
Managing Expiration
Close Early
Exit 1-2 weeks before expiry to avoid gamma and pin risk.
Roll Forward
Close current position, open longer-dated option.
Let Expire (If OTM)
Small OTM positions can be allowed to expire worthless.
Exercise (If ITM)
Rare—usually better to sell the option than exercise.
Common Mistakes
-
Holding to expiration hoping for miracle – Time value is gone. Move or lose.
-
Forgetting about assignment – ITM options get exercised. Need cash/shares.
-
Ignoring after-hours moves – Stock can move after close, affecting exercise.
-
Wrong expiration date – Verify exact expiry. Monthly vs weekly matters.
How JournalPlus Tracks Expiration
JournalPlus tracks days to expiration at entry, alerts you as expiration approaches, and logs whether you closed, rolled, or let positions expire.
