How do you know if your option was assigned early?

The short option disappears from the account and the stock position it created takes its place: shares sold at the strike for a short call, shares bought at the strike for a short put. Brokers also post an assignment notice, and many send an alert, so learn how yours tells you.

Can you be assigned on a covered call before expiration?

Yes. A covered call is still a short American-style option, so the holder can exercise it on any business day. Your shares are delivered at the strike price and you keep the premium you collected, and if the assignment lands before the ex-dividend date, the dividend goes to the new owner of the shares.

Are index options subject to early assignment?

Many cash-settled index options are European-style, which means they can only be exercised at expiration, so early assignment does not apply to them. Options on exchange-traded funds are American-style like stock options. Check the contract specifications for the exact product you trade.

Early Assignment: Why a Short Option Can Be Exercised Before Expiry

Fifty cents against ten cents. Put a dividend next to the time value left in a call. If the dividend is bigger, expect a notice.

Listed US equity options are American-style. The holder may exercise on any business day up to expiration. So a seller can be assigned on any of those days. You do not get a warning. You open your account and the option has been replaced by a stock position.

Why it is rare most of the time

A holder who exercises early gets the option’s intrinsic value and nothing else. Any time value left in the price is forfeited, while selling the option in the market collects both parts, so a holder sitting on a profit usually sells the contract and lets someone else deal with the shares.

That is why extrinsic value is the number to watch. While an option still carries meaningful time value, exercising it throws money away and few holders bother; once the time value shrinks to a few cents, the cost of exercising shrinks with it, and any small reason to exercise can win.

The dividend case

A call holder does not receive dividends. A shareholder does. To collect a dividend, you have to own the stock before the ex-dividend date, so a call holder who wants the payment has to exercise in time to be on the shareholder list, which in practice means exercising on the day before the stock goes ex-dividend.

The holder weighs two amounts. What they give up is the call’s remaining extrinsic value. What they gain is the dividend. When the dividend is the larger of the two, exercising early is the better trade for them, and a short call seller should expect to hear about it.

The dividend is five times the time value. Early assignment the day before the ex-date is likely. What happens next depends on what else is in your account.

If you own 100 shares against the call, they go out at $40. You receive $4,000 per contract. You keep the premium you collected when you sold the call. You do not get the dividend.

Without the shares, assignment leaves you short 100 per contract. A short seller owes the dividend to the lender of the stock. Carry that short position through the ex-date and $0.50 x 100 = $50 per contract comes out of your account, on top of whatever the stock does next.

The second case comes up with spreads, where the short call is covered by a long call at a higher strike and there are no shares anywhere in the position.

Deep in-the-money puts

Puts can be assigned early too, and the dividend is not the reason. A deep in-the-money put is priced almost entirely at intrinsic value. Exercising it turns the position into cash at the strike price now, and a holder who would rather have that cash working elsewhere than wait for expiration has a reason to act once time value is close to nothing.

This is less predictable than the dividend case because no single date sets it off, though the warning sign is the same one: a short put far in the money with only pennies of extrinsic value left.

What to check and when

Two habits cover most of the risk.

Before each ex-date, compare every short call’s extrinsic value with the dividend.
Watch any short option that has gone deep in the money. Its time value is all that stands between you and assignment.

If the dividend is larger, you have a choice. Close the short call, roll it to a later expiration or a higher strike where more time value remains, or accept assignment and plan for the stock position it creates. A roll is a fresh decision with its own risk. Rolling a losing option is a new trade sets out how to judge one.

What people get wrong

The usual error is thinking early assignment happens at random. It mostly does not. Holders act when the arithmetic favors them. You can run the same sum from the chain in a minute.

The other error is assuming a covered call protects you from all of it. Covered calls avoid the short-stock problem, yet assignment still takes away your shares and the dividend you were counting on, which matters if the stock was held for income. Related terms: pin risk, which is the same uncertainty squeezed into expiration day.