A covered call is an options strategy in which an investor owns shares of a stock or exchange-traded fund (ETF) and sells a call option against those shares. The investor receives an upfront payment called a premium and agrees to sell the shares at a specified strike price if the option buyer exercises the contract.
The trade-off is simple:
- You collect premium income.
- Your effective break-even price falls by the premium received.
- Your gains are limited above the call's strike price.
- You still face substantial losses if the stock falls.
Covered Calls at a Glance
| Feature | Covered Call |
|---|---|
| Structure | Long stock plus short call option |
| Main objective | Generate income or set a target selling price |
| Typical outlook | Neutral to moderately bullish |
| Income | Premium received from selling the call |
| Upside | Limited above the strike price |
| Downside | Substantial because you still own the stock |
| Assignment | Shares may be sold at the strike price |
| Standard contract size | Usually 100 shares |
One standard equity options contract generally represents 100 shares. An investor with 100 shares can typically sell one call contract.
How Does a Covered Call Work?
A covered call works by combining stock ownership with a short call option:
- You own shares of a stock or ETF.
- You sell a call option with a chosen strike price and expiration date.
- You receive the option premium.
- If the option is assigned, you sell your shares at the strike price.
The call buyer has the right to purchase the shares. The call seller must sell the shares if assigned. Owning the shares makes the call "covered" because the investor already has the stock needed to deliver.
Covered Call Example
Assume you:
- Buy 100 shares of ABC at $50 per share
- Sell one ABC $55 call
- Receive a premium of $2 per share, or $200 total
If ABC Stays Below $55
The call may expire worthless. You keep the 100 shares and the $200 premium.
The premium reduces the position's effective break-even price from $50 to $48 per share, before transaction costs and taxes.
If ABC Rises Above $55
The shares may be assigned. You sell 100 shares at $55 and keep the $200 premium.
Your maximum profit is:
($55 − $50) × 100 + $200 = $700
If ABC rises above $55, the stock's additional gains do not increase your profit because the short call limits your upside.
If ABC Falls Sharply
The premium provides only a limited cushion. If ABC falls to zero, your approximate loss would be:
$5,000 stock loss − $200 premium = $4,800 loss
A covered call does not protect you from a major decline in the stock. The downside remains substantial.
Why Do Investors Sell Covered Calls?
Investors commonly sell covered calls to:
- Generate income from shares they already own
- Reduce the effective cost basis of a stock position
- Set a price at which they are willing to sell
- Earn a limited return while expecting the stock to remain stable or rise moderately
The strategy generally suits an investor who is willing to sell the shares at the strike price. The approximate effective sale price is:
Strike price + premium received per share
For example, a $55 strike price and a $2 premium produce an effective sale price of about $57 per share, before costs and taxes.
What Are the Main Risks of Covered Calls?
1. The Stock's Upside Is Capped
If the stock rises well above the strike price, you usually do not receive the additional gains. Covered calls may therefore be a poor fit when you expect a sharp rally.
2. The Stock Can Still Lose Significant Value
The premium reduces the loss by a limited amount. It does not provide complete downside protection. If the stock falls by $10 per share and the premium was $2, the position still loses about $8 per share, excluding costs.
3. Your Shares Can Be Assigned
Assignment means the shares are sold to the call buyer at the strike price. Equity call options can generally be exercised before expiration, so early assignment is possible. The risk can increase near an approaching ex-dividend date, particularly when the option is in the money.
4. You Cannot Freely Sell the Stock While the Call Is Open
Selling the shares without closing or otherwise covering the short call could leave you with an uncovered call. That position has a much higher risk profile.
5. The Premium Is Not Guaranteed Profit
The premium is income, but the overall position can still lose money if the stock falls far enough. Brokerage charges, taxes and the original purchase price also affect the final result.
Who Are Covered Calls Suitable For?
Covered calls may suit investors who:
- Own at least 100 shares of a stock or ETF
- Expect the price to remain fairly stable or rise moderately
- Want income from an existing position
- Would be comfortable selling the shares at the strike price
- Understand that the strategy limits upside
Covered calls are usually a poor fit for investors who:
- Expect a sharp rally
- Must retain the shares
- Treat the premium as downside protection
- Do not understand options assignment
- Have not received options-trading approval from their brokerage
Options trading requires brokerage approval. Regulators also advise investors to review the Characteristics and Risks of Standardized Options document before trading.
The Key Question Before Selling a Covered Call
Before selling a covered call, ask:
Would I be happy to sell my shares at the strike price and keep the premium received?
If the answer is no, the strategy may not be appropriate. A covered call trades some future upside for immediate premium income and a possible sale at a price you choose.