Strategy guide
Covered calls: turn shares you own into income
A covered call combines ownership of 100 shares with the sale of one call option against them. The premium collected produces income but caps the position's upside above the strike price. Maximum loss remains substantial, not eliminated, because the underlying shares can still fall toward zero regardless of the premium received.
By Option Ideas Editorial Team · Published September 1, 2026 · Updated September 2, 2026
The mechanics
You need 100 shares (or a multiple of 100) of the underlying stock. You sell one call option per 100 shares, above the current price. You collect the premium immediately. Two things can happen by expiration:
Stock stays below the strike
The call expires worthless. You keep the shares and the premium. You can sell another call the next cycle — this is what makes it a repeatable income strategy.
Stock rises above the strike
Your shares get “called away” — sold at the strike price. You keep the premium and the gain up to the strike, but miss out on anything above it.
The numbers, precisely
- Max profit (capped)
- (Strike − cost basis) × 100, plus the premium collected. You give up everything above the strike.
- Max loss (substantial, not capped)
- The stock going to $0, minus the premium you collected. The premium only cushions the fall — this is still full downside stock ownership.
- Breakeven
- Cost basis − premium per share.
- Market view
- Neutral to mildly bullish — you're fine with the stock going nowhere or up a little, not with a sharp rally past your strike.
A worked example
Illustrative numbers, not live quotes — for that, see the ideas page, which prices covered calls from a real, current option chain.
| You own | 100 shares at $100 cost basis |
| You sell | 1x $110 call for $3.00 premium |
| If stock closes at $108 | Call expires worthless. You keep $300 and the shares. |
| If stock closes at $130 | Shares called away at $110. Profit capped at $1,300 ($1,000 stock gain + $300 premium) — you miss the extra $2,000 the stock actually moved. |
| If stock closes at $70 | Call expires worthless, but the shares are down $3,000. Premium only offsets $300 of that. |
When it fits, and when it doesn't
Fits
You already own the shares, don't expect a big near-term rally, and want to generate income while you wait.
Doesn't fit
You expect the stock to run hard (you'll cap your own upside), or you can't stomach owning 100 shares through a real decline — the call doesn't protect you from that.
Risks and assumptions
- You give up everything above the strike -- a sharp rally caps your gain at exactly the same profit as a much smaller move to the strike.
- Maximum loss is substantial, not eliminated: the premium cushions a decline but does not protect against the shares falling most of the way to zero.
- Assignment can happen before expiration, especially close to a dividend date, leaving you without the shares (and without the ability to sell another call) sooner than planned.
FAQ
Do I need to already own the shares?
Yes. A covered call specifically means selling a call against stock you already hold -- selling a call without owning the shares is a naked call, a very different, undefined-risk position.
What happens on assignment?
Your shares are sold at the strike price, and you keep the premium already collected. You no longer own the stock, and you're free to buy it back or move on.
Can I roll the call instead of letting it get assigned?
Yes -- closing the current call and selling a new one, usually at a later expiration or different strike, is common practice for continuing to collect premium without the shares being called away.
Primary references
Not hyperlinked deliberately -- verify current material directly on each organization's own site.
- The Options Clearing Corporation (OCC)
- Cboe Options Institute