Learn options · plain language
What is a covered call
A covered call means you own 100 shares and you sell someone the right to buy them from you at a set price. They pay you for that right.
It is close to renting out something you own. You keep the rent whatever happens. What you give up is the upside above the price you agreed to sell at.
Covered means you already hold the shares
The word covered is doing real work. If you sell a call without owning the stock, you are naked, and a rally has no ceiling on what it can cost you.
Owning the 100 shares caps that. The worst case is no longer an unbounded loss; it is being made to sell your shares at the strike.
What you are trading away
You collect the premium immediately and keep it in every outcome. In exchange, your gain on the shares stops at the strike.
If the stock runs well past it, you still sell at the strike. The premium softens that, but a covered call turns a large win into a capped one. That is the actual cost, and it does not show up as a loss on the trade.
It does not protect you much
The premium cushions a fall by exactly the amount you received and no more. On a 2% credit, a 20% drop is still a 18% drop.
Covered calls are often described as conservative. They reduce your upside far more reliably than they reduce your downside.
Assignment is the normal outcome, not a failure
If the stock finishes above the strike you deliver the shares and the position closes. That was the deal when you opened it.
Where it stings is tax and re-entry: you may realise a gain you did not plan to, and buying back in costs more than you sold at.
A worked example
| Shares owned | 100 at $48 cost basis |
|---|---|
| Stock today | $50 |
| Call sold | $55 strike, 1.20 premium |
| Credit received | $120, kept in every case |
| Stock at expiry: $52 | Keep shares and the $120. Position worth $5,200 plus credit. |
| Stock at expiry: $60 | Assigned at $55. Gain capped: $700 on shares plus $120, not the $1,200 you would have had. |
| Stock at expiry: $44 | Keep shares, down $400, softened to $280 by the credit. |
The middle row is the one to sit with. The trade worked exactly as designed and still left $380 on the table against simply holding.
Run the numbers in the options profit calculator, free and with no sign-up.
Where this goes wrong
Selling calls on a stock you want to keep
The better the stock does, the more certain it is you lose it. If you would be unhappy being assigned, this is the wrong position.
Picking the strike by premium alone
A fat premium means the market thinks the stock can get there. You are being paid more because you are more likely to be assigned.
Calling it income and ignoring the shares
The credit is real, but the position is still long 100 shares. Most of the risk sits in the stock, not in the option.
Common questions
Can I lose money on a covered call?
Yes, if the stock falls. The premium reduces the loss by its own size and nothing more. The downside risk is close to that of simply owning the shares.
What if I want to keep my shares after all?
You can buy the call back before expiry, usually at a loss if the stock has risen. You can also roll it out and up, which defers the decision rather than removing it.
Do I need 100 shares exactly?
Per contract, yes. One contract covers 100 shares. With 250 shares you can sell two covered calls, and the other 50 shares are simply uncovered stock.
Write the trade down before you forget why
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This is education, not advice, and nothing here predicts an outcome. Options carry risk of total loss on the premium paid and larger losses when sold. SES Technology Ventures LLC.