The covered call, with the shares on the graph

A covered call pairs 100 shares you own with one call option you sell against them. You collect cash now and agree to sell the shares at a set price if the stock rises past it. The trade is simple, but its risk graph only tells the truth when the shares are drawn on it too.

What a covered call is

A call option gives its buyer the right to buy 100 shares at a fixed price, called the strike, until a date called the expiry. When you sell a call, you receive a payment, the premium, and take on the obligation to sell 100 shares at the strike if the buyer asks.

The call is "covered" because you already own the 100 shares. If you are asked to deliver them, you hand over shares you hold rather than buying them in the market. A covered call has two parts:

• Own 100 shares of the stock.
• Sell one call, usually at a strike above the current price.

The example: AAPL with a 355 call

All figures are illustrative, model prices. AAPL trades at 331.90. You hold 100 shares, worth 331.90 × 100 = $33,190, and sell one 355 call with 44 days to expiry for about $5.68 per share, or $568.

Income, a cap and a risk that stays

The covered call changes three things about owning shares.

• Income. The $568 premium is yours whatever happens. It is paid when the trade opens, not promised later.
• A capped upside. Above 355, every extra dollar the stock gains is owed to the call buyer. Your gain stops at $2,878, however high AAPL goes. If the stock rose to 400, the shares alone would have made (400 − 331.90) × 100 = $6,810, but the covered call still makes $2,878.
• A downside that stays. The premium only cushions a fall. It moves your break-even from 331.90 down to 326.22, a cushion of 5.68 per share. Below that, the trade loses almost dollar for dollar with the stock. At 300, the shares lose $3,190 and the premium reduces that to a loss of $2,622.

In short, a covered call trades away the upside above the strike for cash today, while keeping almost all of the downside of owning the stock.

Choosing the strike and the days

Two choices shape the trade: which strike to sell, and how far out to go.

Strike, by delta. Delta measures how much an option's price moves for a $1 move in the stock. It also serves as a rough guide to the chance the option finishes in the money. A call around 30 delta sits well above the current price. In the model example, the 355 call has a delta of about 0.28. A higher strike (lower delta) pays less premium but leaves more room for the stock to rise. A lower strike (higher delta) pays more but caps the gain sooner and makes assignment more likely.

Days to expiry. Options lose time value each day, measured by theta, and the loss speeds up near expiry. A window of roughly 30 to 45 days collects a useful amount of premium without tying the shares up for too long. Shorter expiries pay less per trade but can be repeated more often; longer ones pay more per trade but lock in the cap for longer.

Assignment

Assignment is when the call buyer uses their right and you must sell your 100 shares at the strike. For US stock options it can happen on any day before expiry, but it is most common at expiry, when the call is in the money, and just before an ex-dividend date, when the dividend can make early exercise worth it to the buyer.

If you are assigned at 355 in the example, you sell the shares for $35,500, keep the $568 premium and realise the full $2,878 result. Assignment is not a loss; it is the capped outcome you agreed to. It does end your share position, which may matter for taxes or for a longer-term plan.

Rolling

Rolling means closing the current call and selling a new one in the same order, usually with a later expiry and often a different strike. Two common cases:

• Rolling up and out when the stock has risen near or past the strike: buy back the 355 call and sell a higher strike further out. This can lift the cap, but buying back an in-the-money call costs money, so the roll may be a net debit.
• Rolling out when the call is near worthless close to expiry: buy it back cheaply and sell a new call for the next cycle.

Each roll changes the cap, the break-even and the days at risk, so check the new trade on the graph before sending it.

The cash-secured put and the wheel

A cash-secured put is the mirror image. You sell a put below the current price and set aside enough cash to buy 100 shares at the strike. You collect premium, and if the stock falls below the strike you may be assigned the shares. At expiry its payoff shape matches a covered call at the same strike.

The wheel links the two: sell cash-secured puts until you are assigned shares, then sell covered calls on those shares until they are called away, then start again. The wheel carries the same core risk as owning the stock. To limit that downside, a collar adds a bought put under a covered call, and a poor man's covered call uses a long-dated call in place of the shares.

Why the graph must include the shares

A risk graph that shows only the short call draws a trade with a small gain capped at $568 and an unlimited loss above 355. That is the picture of a naked call, not of your position. It hides the shares that cover the call, and it hides the real risk, which sits below the current price.

The Trident risk graph plots the shares and the call as one position. The line rises to the $2,878 cap at 355, crosses zero at 326.22 and keeps falling as the stock falls. The crash band shows how the whole position reprices on a sharp fall. The short call loses a little value as the stock drops, but the shares carry most of the loss, so the band follows the share line closely. The Greeks panel shows position delta, here 100 shares minus about 28 for the short call, roughly 72 share-equivalents.

Frequently asked questions

What is the break-even on a covered call?

The share purchase price minus the premium per share. In the example, 331.90 − 5.68 = 326.22.

Does a covered call protect against a fall?

Only by the amount of the premium. The $568 cushions the first 5.68 points of a fall; below 326.22 the position loses with the stock.

What happens if the stock jumps far above the strike?

Your gain is capped at the strike plus the premium. In the example that is $2,878, even if the stock rises much further.

Can I be assigned before expiry?

Yes. US stock options can be exercised early, most often when the call is in the money just before an ex-dividend date.

To see a covered call drawn with its shares, test rolls and compare it with a collar, book a demo of Trident.

Illustrative example with model prices, not a recommendation. Options carry risk of loss. See the risk disclosure.