A covered call means selling a call option against 100 shares you already own. You collect premium immediately. In exchange, you agree to sell the shares at the strike if the buyer exercises.
It is the most widely recommended options strategy for beginners, and the most widely misunderstood.
The mechanics
You own 100 shares at $50. You sell a $55 call expiring in 30 days for $1.20 — $120 in your pocket today.
Three outcomes:
Stock below $55 at expiration. The call expires worthless. You keep the shares and the $120. Sell another call.
Stock above $55. The call is exercised. You sell at $55, keep the $120. Total return: $5 of appreciation plus $1.20 premium = $6.20 per share. The stock going to $70 does not change this — you sold at $55.
Stock falls to $40. The call expires worthless, you keep $120, and you are down $1,000 on shares now worth $4,000.
The risk nobody mentions
That third outcome is the strategy's actual risk profile, and the way it is usually taught buries it.
A covered call is not a hedge. The $120 premium offsets $1.20 of a $10 decline. You are still long the stock with essentially all its downside, having sold away the upside that would have compensated you for holding it.
The honest description: you have converted an unlimited-upside position into a capped-upside position with unchanged downside, in exchange for a small payment.
That is a fine trade on a stock you were happy to own anyway, at a strike where you would genuinely be content to sell. It is a bad trade on a stock you are hoping recovers — you have capped the recovery and kept the risk.
Choosing a strike
Delta is the usual lever, and it approximates the probability of finishing in the money:
- 0.30 delta — a common default. Reasonable premium, roughly 30% assignment odds.
- 0.15–0.20 delta — less premium, keep the shares more often. Suits holders who want income without losing the position.
- 0.40+ delta — rich premium, high assignment odds. You are close to just selling the stock.
Strike selection is where structure helps: a strike sitting above a positive gamma wall, above max pain, and outside the 1σ expected move has several independent reasons to expect price to stall below it — a materially better covered call than the same delta chosen at random.
Assignment is not failure
Getting assigned above your cost basis is the trade working. You made the appreciation plus the premium. Traders who panic-roll every tested call to avoid assignment usually end up defending a position the strategy was designed to exit.
Decide before you sell whether you want the income or the shares. The strategy cannot give you both.