The Ex-Dividend Trap: Why Your Covered Call Might Get Called Early
The Ex-Dividend Trap: Why Your Covered Call Might Get Called Early
You're wheeling along, selling covered calls, collecting premium, life is good. Then one morning you wake up to find your shares gone a week before expiration, and you're scratching your head, wondering what happened.
That unexpected early assignment often happens thanks to the "ex-dividend trap" when a stock you own is about to pay a dividend. If your covered call is in the money (ITM) and the remaining time value of the option is less than the dividend amount, the option holder has a financial incentive to exercise their call early to capture that dividend.
Why the "Ex-Dividend Trap" Springs
Here's the deal: When a stock goes ex-dividend, anyone who owns the shares before that date receives the dividend. The option holder, seeing their ITM call, realizes they can exercise it, take ownership of your shares, and then collect the dividend themselves.
They'll only do this if the dividend they stand to gain is greater than the remaining time value they'd sacrifice by exercising early. Time value erodes quickly as expiration approaches, making early exercise more likely closer to the ex-dividend date.
How to Spot a Potential Trap
You can check for this setup before it happens. First, find the stock's ex-dividend date and the per-share dividend amount. Sites like Yahoo Finance or your broker's research tools usually have this information readily available.
Next, look at your covered call. If it's in the money, calculate its intrinsic value (stock price minus strike price). Subtract that from the current premium you'd receive if you bought the call back. The remainder is its time value.
The Rule of Thumb: If (Dividend Amount) > (Call Premium - Intrinsic Value), then early assignment is very possible.
Let's look at an example using Microsoft (MSFT) with a hypothetical dividend and stock price:
| Covered Call Strike | Stock Price | Dividend (per share) | Call Premium (per share) | Intrinsic Value | Time Value | Early Assignment Risk? |
|---|---|---|---|---|---|---|
| $415 | $420.00 | $0.75 | $6.00 | $5.00 | $1.00 | No (Time Value > Dividend) |
| $415 | $420.00 | $0.75 | $5.40 | $5.00 | $0.40 | Yes (Time Value < Dividend) |
As you can see in the second scenario, if the time value drops below the dividend, the option holder has a clear financial incentive to exercise their call and get those shares before the ex-dividend date.
Three Ways to Deal with the Ex-Dividend Trap
You have a few options when faced with this scenario:
- Avoid expirations near ex-dividend dates. The easiest defense is prevention. When you're selling a covered call, quickly check the ex-dividend date. If your expiration is just before or on that date, consider choosing a different expiration cycle or a different strike.
- Buy back the call. If you want to keep your shares and collect the dividend yourself, you can buy back your covered call to close the position. You'll likely pay a bit more than you sold it for, especially if it's deep ITM, but it could be worth it to keep the shares and the dividend.
- Accept assignment. Sometimes, it's just not worth fighting. If you're comfortable selling your shares at the strike price of your covered call, simply let the assignment happen. You'll sell your shares, collect the cash, and can then decide whether to re-enter the stock or move on to a new trade. Just remember, you won't receive the dividend if you're assigned.
What Happens in Your Account When Assigned Early
When you're assigned early on a covered call, here's the typical sequence of events:
- Your broker will debit your account 100 shares of the underlying stock for each contract assigned.
- Your account will be credited with cash equal to the strike price multiplied by 100 shares for each contract. For example, if your $415 strike call on MSFT was assigned, you'd receive $41,500 for those 100 shares.
- The covered call option position will disappear from your portfolio.
- You will not receive the dividend, as you no longer own the shares on the ex-dividend date.
It's a quick transaction that resolves the position. If you're wheeling, you might just look for a new stock or wait for a dip to sell another cash secured put on the same ticker.
Don't Get Trapped
The ex-dividend trap is one of those quirks of options trading that can catch new wheel traders off guard. A quick check of the ex-dividend date and a comparison of time value versus dividend amount can save you from an unexpected early exit. Stay vigilant, and keep those premiums rolling in.