What Happens When an Option Expires In or Out of the Money
By Stephen Manning · @StephenCFU on X · · 11 min read
What happens when an option expires: worthless if out of the money, usually auto-exercised if in the money. Calls, puts, and what to do without the cash.
When an option expires out of the money, it expires worthless: the buyer loses the premium paid, the seller keeps it, and no shares change hands. When it expires in the money by $0.01 or more, it is usually exercised automatically, so each contract becomes 100 shares bought (call) or sold (put) at the strike, and you need the cash, the shares or the margin to settle it.
That second case is where the surprises come from, and almost all of them can be headed off before expiration day. If you need a refresher on how calls and puts work, start there.
In the money vs. out of the money at expiration
- In the money (ITM): the option has intrinsic value. A call is in the money when the stock is above the strike; a put is in the money when the stock is below the strike.
- At the money (ATM): the stock is at or very near the strike, so there is little or no intrinsic value.
- Out of the money (OTM): no intrinsic value. A call is out of the money when the stock is below the strike; a put is out of the money when the stock is above the strike.
At expiration only intrinsic value is left, so where the stock closes relative to the strike decides the outcome. An option that closes exactly at the strike is not exercised automatically, but its holder can still choose to exercise it, so if you are short it, you won't know whether you were assigned until the next business day.
What happens when an option expires out of the money
An out-of-the-money option expires worthless and is removed from your account. No shares change hands, nothing is owed, and the trade is over. For the market-wide numbers, see how many options expire worthless.
Call options
A $50 call is worthless if the stock closes at $48: nobody pays $50 through a call for stock that costs $48 in the market. The buyer loses the premium paid. The seller keeps it, and a covered call seller keeps the shares and can sell another call.
Put options
A put is worthless if the stock closes above the strike. The buyer loses the premium paid. The seller keeps it and buys no shares, so the cash set aside to secure the put is released.
This is the outcome option sellers are aiming for. As expiration approaches, time decay pulls the price of an out-of-the-money option toward zero, and that decay is what the seller is paid for.
What happens when an option expires in the money
An in-the-money option has real value at expiration, so it is usually exercised. What that means for you depends on which side of the trade you are on:
| Your position | If it expires in the money | What you need in the account |
|---|---|---|
| Long call | Exercised: you buy 100 shares per contract at the strike | Cash equal to 100 times the strike, or margin |
| Long put | Exercised: you sell 100 shares per contract at the strike | The shares, or margin to hold a short stock position |
| Short call | Assigned: you sell 100 shares per contract at the strike | The shares (a covered call), or margin to hold a short stock position |
| Short put | Assigned: you buy 100 shares per contract at the strike | Cash equal to 100 times the strike, or margin |
Example: suppose you own one XYZ call with a $50 strike, and XYZ closes at $60 on expiration day. If you do nothing, the call is exercised automatically: you buy 100 shares at $50, paying $5,000 for stock worth $6,000. That $10 a share of intrinsic value is yours, before subtracting the premium you paid and any fees. The catch is the $5,000: if the account can't cover it, your broker decides what happens next.
Automatic exercise
Under the Options Clearing Corporation's exercise-by-exception rule, a stock or ETF option that is in the money by $0.01 or more at the close on expiration day is exercised automatically, unless the holder tells the broker not to exercise it. Holders can file a do-not-exercise instruction, and some brokers apply their own thresholds. Out-of-the-money options are never exercised automatically.
Exercise and assignment are processed after the close, and the resulting shares show up in your account on the next business day. With a Friday expiration, that means you hold the stock position over the weekend before you can trade it, and the stock can gap at Monday's open. Index options such as SPX work differently: they settle in cash, so an in-the-money contract pays the difference and no shares change hands.
What if you don't have enough money to exercise?
You don't need to exercise an option to collect its value. Selling it before the close captures the intrinsic value plus any time value left and needs no cash at all, so if you can't afford to exercise, sell.
If you hold it into the close anyway, your broker's policy decides what happens. It usually goes one of two ways:
- The broker closes it for you. Many brokers sell in-the-money options in accounts that can't support the exercise, often in the last hours of expiration day and at whatever the market pays at that moment.
- The exercise goes through and you get a margin call. You owe the shortfall and must deposit cash or sell shares by the broker's deadline. If you don't, the broker can sell the new shares or other holdings to cover, and it chooses which. In a cash account, an exercise you can't pay for can also bring trading restrictions.
Long puts have their own version. If you hold an in-the-money put without the shares, exercise leaves you short 100 shares per contract, which a cash account can't hold, so expect the broker to close the put or buy the shares back for you. Policies vary, so read your broker's expiration rules before expiration week, not on expiration Friday.
Covered calls and short puts at expiration: assignment
On the selling side, exercise becomes assignment. When a holder exercises, the obligation is assigned to someone who is short that option. If your short option finishes in the money, expect to be assigned. When it happens, here is how to record an options assignment, with the option and the shares as two events.
Covered calls
Amanda owns 100 shares of ABC and sells a covered call with a $40 strike, collecting the premium up front. At expiration ABC trades at $45, so the call is $5 in the money. She is assigned and her shares are sold at $40. She keeps the premium and the stock's gain up to $40, but misses the extra $5 a share above the strike. That trade-off is built into how a covered call works: premium now, in exchange for capping your upside at the strike.
To keep her shares, Amanda could buy the call back before expiration and sell a later-dated one: a roll. With ABC at $45, the $40 call costs at least $5 to buy back, so the roll mostly buys time, and the new call can be assigned too. Under our one-roll rule, if the rolled call is threatened again, she closes the trade or lets the shares be called away; she does not roll a second time.
Cash-secured puts
If you sold a put and the stock closes below the strike, you are assigned: you buy 100 shares per contract at the strike. That is why the trade is called cash-secured. Keep 100 times the strike in the account for every contract, and only sell puts on stock you would be glad to own, which is the idea behind selling puts on shares you want to own. Neither covered calls nor cash-secured puts have defined risk: if the stock keeps falling, you carry the loss on the shares, less the premium you collected.
Credit spreads
Spreads add a twist. If the stock finishes beyond both strikes, the short leg is assigned and the long leg is exercised, the two offset, and you take the spread's max loss: the width minus the credit. If the stock finishes between the strikes, only the short leg is assigned. The long leg expires worthless, and you are left holding 100 shares per contract (put spread) or short 100 shares (call spread) with nothing capping the loss over the weekend. That is why we close or roll spreads before expiration day instead of letting them settle. Here is how to roll a credit spread before expiration. Roll once at most, and if the rolled spread is threatened again, close it.
Your three choices before expiration: sell, exercise or let it expire
If you hold an option going into expiration week, you have three paths:
- Sell to close: you collect the intrinsic value plus any time value left, with no cash needed and no shares involved. Before expiration day this usually beats exercising, as the example below shows.
- Exercise: you buy the shares (call) or sell them (put) at the strike. This makes sense when you actually want the stock position and have the cash, shares or margin to carry it.
- Let it expire: for an out-of-the-money option this costs nothing, since it is worthless anyway. For an option in the money by $0.01 or more, letting it expire usually means it gets exercised for you, which is the same as choosing to exercise. Blocking that with a do-not-exercise instruction gives up the intrinsic value.
Example: selling vs. exercising
Go back to the XYZ $50 call, now with 3 days left and XYZ at $60. Say the call bids $10.40. Exercising costs $5,000 for $6,000 of stock, so you capture $1,000 of value and give up $40 of time value ($0.40 a share). Selling the call brings in $1,040 with no cash required. If you want the shares, you can sell the call and buy the stock in the market and still keep the time value. The exception is a thin, deep in-the-money option whose bid sits below intrinsic value; then exercising and selling the shares can net more.
Step-by-step: managing options near expiration
- Review every position at the start of expiration week. List what is in the money or near the strike and what each would need if exercised or assigned: cash, shares or margin. Then check cash and margin daily; not every broker warns you about a shortfall.
- Watch delta and time value. A delta close to 1 (calls) or -1 (puts) means the option is deep in the money and tracks the stock almost dollar for dollar. A short option that is deep in the money with little time value left is the one most likely to be assigned early.
- Decide before expiration day. Close the position, roll it, or plan for the shares. Closing early skips exercise and assignment entirely.
- Roll once, or not at all. A roll means buying to close the current contract and selling a later-dated one. Our policy is one roll and done, or none. If the rolled trade is threatened again, close it.
- Set closing orders and alerts. A good-till-canceled limit order to take profits and a price alert near your short strike tell you early, not at the close.
Risk management tips
- Respect pin risk and after-hours moves. Options stop trading at the close, but holders can still exercise based on after-hours prices. A short option sitting near the strike at the close is not safe until the exercise deadline passes, so close it rather than guess.
- Count taxes and fees. Exercise and assignment create stock trades, which can create tax events, and some brokers charge exercise or assignment fees. Get tax advice for your own situation.
- Size every trade for the worst case. Keep each trade's max loss to 1 to 2% of the account, and only sell puts on stock you are prepared to own.
- Practice first. Your broker's paper trading account lets you watch an expiration play out before real money is on the line.
Option expiration FAQ
Do options automatically exercise at expiration?
Yes, if they are in the money by $0.01 or more at the close on expiration day, unless the holder tells the broker not to exercise. Out-of-the-money options are not exercised and expire worthless. Your broker may apply its own rules, especially when the account can't cover the exercise.
What happens if I don't sell my option before it expires?
If it is out of the money, it expires worthless and you lose the premium you paid. If it is in the money, it is usually exercised, and you start the next business day long or short 100 shares per contract. Selling before the close captures the same value without the stock position.
What happens if I can't afford to exercise?
Your broker may sell the option for you before the close, or let the exercise go through and issue a margin call, selling your holdings if you don't meet it. You avoid both by selling the option yourself before expiration, which needs no cash.
Can I be assigned before expiration?
Yes, on American-style options, which include most US stock and ETF options. Early assignment is most likely when a short option is deep in the money with little time value left, or on a short call just before an ex-dividend date. European-style options, such as SPX index options, can only be exercised at expiration.
When do options stop trading on expiration day?
Expiring US stock options stop regular trading at 4:00 p.m. Eastern on expiration day, while options on some ETFs, such as SPY and QQQ, trade until 4:15 p.m. Some exchanges also run a short session after the close, so check your broker's cutoff. Holders can still submit exercise or do-not-exercise instructions after the bell, up to an industry cutoff of 5:30 p.m. Eastern, and many brokers set an earlier deadline. Some index options follow different schedules, so check the contract specifications.
Filed under: Risk Management