Long shares plus a short call: a premium now for the upside above the strike.
1
Position structure
A covered call combines long shares with a short call representing the same number of shares.
2
Income and basis
Premium received lowers the expiration breakeven by the premium amount.
3
Capped upside
Above the strike, further stock gains are offset by the short call, while downside in the shares remains substantial.
Interactive lesson
Set basis, strike and premium, then drag the expiration price and compare the position with the shares alone.
Covered call profit and lossLong 100 shares plus one short call
Covered callStock alone
Plan a covered call
The strategy is appropriate only when selling the shares at the strike is acceptable.
1
Confirm share coverage
Own the correct number of deliverable shares for the calls sold.
2
Choose an acceptable strike
The strike is a potential sale price, not merely a premium-selection input.
3
Calculate adjusted basis
Subtract premium from stock basis to estimate expiration breakeven.
4
Plan assignment and exit
Know how dividends, early assignment, and expiration can affect the stock position.
Covered-call mechanics
Score 0 / 0
Choose the best answer.
Lesson rule
Change the inputs, calculate the result, and explain the risk before selecting a contract.
Common mistakes
1
Selling calls on shares that must not be soldAssignment can remove the shares at the strike.
2
Calling the strategy downside protectionPremium only offsets a limited amount of stock loss.
3
Ignoring tax and account consequencesAssignment and share disposition can have account-specific effects that require professional review.
Completion standard
✓
Finish when you can compute a covered call’s breakeven, its capped maximum profit and its loss on a fall, and say why the premium is not downside protection.
The drill asks for the P/L on a $20 fall; the shares still own that fall.
Model scope: Theoretical values use a simplified European Black–Scholes model with a fixed 4.5% annual rate and no dividend input, so a number here can be reproduced in any calculator that takes those inputs. Listed products, early exercise, dividends, spreads, fees, and market conditions can produce different prices and outcomes.
Kept in this browser only, for you. Nothing is sent anywhere and nothing checks it.
Carry it to another device.
Feedback and recommendations
Something to change about this lesson? Write it down, tick it off when it
is handled, and export the list when you want to act on it. Kept in this browser only:
nothing is sent anywhere, and nobody is notified.