What happens to an options position at expiration?

In or out of the money decides

At expiration each leg is judged on its own. A leg that finishes out of the money expires worthless and leaves the account; a bought one has cost its premium, a sold one keeps its credit. On a standard stock option, a leg in the money turns into a stock trade: a long one is normally exercised, a short one normally assigned, and 100 shares per contract change hands at the strike. Index options are usually cash-settled instead: only the in-the-money amount is paid. Most in-the-money options are exercised automatically unless the holder instructs otherwise.

Spreads: three outcomes

A vertical spread has two legs on the same expiration, and they can land on different sides of the price. If both finish out of the money, both expire and the opening credit or debit is the result. If both finish in the money, exercise and assignment offset each other in cash, and the result is the spread’s maximum profit or maximum loss. The outcome that needs a decision is a price between the strikes: one leg is in the money, the other expires, and the account wakes up holding a stock position the spread used to cap.

Who decides, and whose rules apply

The holder decides whether to exercise; the clearing house assigns exercises to brokers with short positions, and each broker passes them on to its accounts. The holder’s decision can come after the final close, so a short leg that finished just out of the money can still be assigned. Last trading day, cut-off times and exercise thresholds differ by product, exchange and broker. Your broker’s rules for your account are the ones that bind, and a broker may close a position itself if the account could not carry the resulting shares.

The common misreading

A defined-risk spread is often assumed to stay defined-risk through expiration. It does so only while both legs exist. Once the long leg has expired and the short leg has been assigned, the account holds shares, and the spread no longer caps their risk: the stock can open far lower or higher in the next session. When the price sits between the strikes shortly before expiration, only closing the spread first keeps the maximum loss at the figure you planned for.

Worked example

Hypothetical numbers for illustration, not a market quote and not a recommendation.

On an example stock, a bull put spread sells the 95 € put and buys the 90 € put for a 1.50 € credit. At 97 € on expiration both puts expire worthless and the 150 € credit is the profit. At 88 € both are in the money; assignment and exercise net out to a loss of (5 − 1.50) × 100 = 350 €, the maximum loss the credit spread calculator shows.

At 92 € only the 95 € put is in the money. The position’s expiration result is −(3 − 1.50) × 100 = −150 €, but left open the 95 € put is assigned: 100 shares bought for 9,500 €, worth 9,200 €, while the 90 € put expires. The next session starts with 100 shares, and below 90 € the loss keeps growing with every euro the stock falls. Fees are ignored.

Strategies where the term matters

• Covered Call — Are you willing to hand over the shares at the call strike - even if they keep running afterwards?
• Short Iron Condor — Is the range you expect genuinely narrower than the move the market has priced in?
• Long Call Calendar — Is the near-term expiration expensive relative to the far one (a term structure in backwardation)?

Calculators for this term

• Credit Spread Calculator
• Multi-Leg Break-Even Calculator

Track it in your journal

• Options trading journal for spreads and multi-leg strategies

Related terms

• Assignment
• Intrinsic value
• Days to expiration (DTE)

Every term in one place: the options glossary.