What Happens When an Option Is Assigned

When you are assigned, the trade you sold executes: a cash-secured put buys you 100 shares at the strike, a covered call sells your 100 shares at the strike, and you keep the premium either way. Assignment is the moment an option you sold turns into an obligation you have to honor. For covered call and cash-secured put sellers it is rarely a disaster — often it is the plan working — but it pays to know exactly what happens, when it can happen early, and what your choices are.

What’s the difference between assignment and exercise?#

These two words describe the same event from opposite sides. Exercise is the action of the option buyer: the holder of a long option chooses to use their right — to buy stock with a call, or sell stock with a put. Assignment is what lands on the option seller: when a holder exercises, the clearing house assigns the obligation to someone who is short that option.

So you are never assigned on an option you bought. Assignment only happens to a short position — and as a covered call or cash-secured put seller, you are always short the option. Assignment is processed outside market hours, so you usually see it in your account the next morning.

What happens when a cash-secured put is assigned?#

You sold a put, so you are obligated to buy. When a cash-secured put is assigned you buy 100 shares per contract at the strike price. The cash you set aside to secure the put pays for the stock. The premium you collected up front is still yours, and it lowers your effective cost — a $48 strike with $1.20 of premium means your shares effectively cost $46.80 each.

After assignment you are simply a shareholder. If you are running the wheel strategy, this is the hand-off point: you now sell covered calls against the shares you were just assigned.

What happens when a covered call is assigned?#

You sold a call, so you are obligated to sell. When a covered call is assigned you deliver 100 shares per contract at the strike price and receive the strike times 100 in cash. Because the call was covered you already owned the shares — there is no scramble to buy stock at the market price. You keep the premium, and the shares are gone at the strike.

For a covered call writer this is usually the trade working as designed: the stock rose, you sold at a price you chose, and you kept the premium. The mistake is feeling cheated that the stock kept running afterward — you sold that upside on purpose, and the premium was the price you were paid for it.

Can you be assigned before expiration?#

Yes. Standard equity options are American-style, which means the holder can exercise any time before expiration — so a short option can be assigned early. In practice early assignment is uncommon, because exercising early throws away the option’s remaining time value; a holder usually does better selling the option than exercising it.

At expiration itself, assignment is near-automatic for in-the-money options. The clearing house exercises any option that finishes in the money by a cent or more unless it is told otherwise. If you hold a short in-the-money option into expiration, expect to be assigned.

Can a covered call be assigned before a dividend?#

The most common early assignment a retail seller meets is on a covered call, around a dividend. If you are short an in-the-money call and the stock is about to pay a dividend, the call holder may exercise the day before the ex-dividend date to own the shares and capture that dividend. They do this when the dividend is worth more than the call’s remaining time value.

The practical rule: before selling covered calls on a dividend-paying stock, check the ex-dividend date. An in-the-money call heading into ex-dividend is the classic early-assignment setup.

What happens if the stock closes right at my strike?#

When a stock closes very close to your strike at expiration you face pin risk: you may not know until the weekend whether your option was exercised. A call you assumed expired worthless can be assigned after hours if the stock ticked just above the strike. If a stock is sitting on your strike near expiration and the outcome matters, closing the position before the bell removes the uncertainty.

What can you do about an assignment?#

With a short option you would rather not see assigned, you have three choices:

• Accept it. For covered call and cash-secured put sellers, assignment is often the intended outcome — you sold the option willing to buy or sell at the strike. If that is still true, let it happen.
• Close it. Buy the option back before expiration. You pay to exit, but the obligation ends cleanly.
• Roll it. Buy back the current option and sell another further out in time, possibly at a different strike, ideally for a net credit. Rolling a short put that has gone against you is a common repair.

To avoid assignment altogether, do not hold short in-the-money options into expiration, and close or roll a short call before its ex-dividend date if it is in the money. But keep the bigger picture in mind — if you only ever sell options you would hate to be assigned on, you are selling the wrong options. Use the Cash-Secured Put Calculator or Covered Call Calculator to see how assignment plays out on each trade.