How and Why to Use a Covered Call Option Strategy

traders discussing covered call options strategy

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A covered call is an options strategy involving trades in both the underlying stock and an option contract. The trader buys (or already owns) the underlying stock. They will then sell call options for the same number (or less) of shares held and then wait for the option contract to be exercised or to expire.

Exercising the Option Contract

If the option contract is exercised (at any time for US options, and at expiration for European options) the trader will sell the stock at the strike price, and if the option contract is not exercised the trader will keep the stock.

For a covered call, the call that is sold is typically out of the money (OTM). This allows for profit to be made on both the option contract sale and the stock if the stock price stays below the strike price of the OTM option. If you believe the stock price is going to drop, but you still want to maintain your stock position, for the time being, you can sell an in the money call option (ITM).

For this, you will receive a higher premium from the buyer of your call option, but the stock must fall below the ITM option strike price, otherwise, the buyer of your option will be entitled to receive your shares if the share price is above the option's strike price at expiration (you lose your share position). Covered call writing is typically used by investors and longer-term traders, and is rarely used by day traders.

How to Create a Covered Call Trade

  1. Purchase a stock, and only buy it in lots of 100 shares. 
  2. Sell a call contract for every 100 shares of stock you own. One call contract represents 100 shares of stock. If you own 500 shares of stock, you can sell up to 5 call contracts against that position. You can also sell less than 5 contracts, which means if the call options are exercised you won't have to relinquish all of your stock position. In this example, if you sell 3 contracts, and the price is above the strike price at expiration, 300 of your shares will be called away, but you will still have 200 remaining. 
  3. Wait for the call to be exercised or to expire. You are making money off the premium the buyer of the call option pays to you. If the premium is $0.10 per share, you make that full premium if the buyer holds the option until expiration and it is not exercised. You can buy back the option before expiry, but there is little reason to do so, and this isn't usually part of the strategy.

Risks and Rewards of the Covered Call Options Strategy

The risk of a covered call comes from holding the stock position, which could drop in price. Your maximum loss occurs if the stock goes to zero. Therefore, you would calculate your maximum loss per share as:

Maximum loss per share = (Stock entry price - $0) + Option premium received

For example, if you buy a stock at $9, and receive a $0.10 option premium on your sold call, your maximum loss is $8.90 per share. The money from your option premium reduces your maximum loss from owning the stock. The option premium income comes at a cost though, as it also limits your upside on the stock.

You can only profit on the stock up to the strike price of the option contracts you sold. Therefore, calculate your maximum profit as:

Maximum profit = (Strike price - stock entry price) + Option premium received

For example, if you buy a stock at $9, receive a $0.10 option premium from selling a $9.50 strike price call, then you maintain your stock position as long as the stock price stays below $9.50 at expiration. If the stock price moves to $10, you only profit up to $9.50, so your profit is $9.50 - $9.00 + $0.10 = $0.60. 

If you sell an ITM call option, the underlying stock's price will need to fall below the call's strike price in order for you to maintain your shares. If this occurs, you will likely be facing a loss on your stock position, but you will still own your shares, and you will have received the premium to help offset the loss.

Final Word on the Covered Call Options Strategy

The main goal of the covered call is to collect income via option premiums by selling calls against a stock that you already own. Assuming the stock doesn't move above the strike price, you collect the premium and maintain your stock position (which can still profit up to the strike price).

Traders need to factor in commission when trading covered calls. If commissions will erase a significant portion of the premium received, then it isn't worthwhile to sell the option(s) and create a covered call.

Article Sources

  1. Charles Schwab Corporation. "Your Very First Options Trade." Accessed Jan. 20, 2020.

  2. The Federal Reserve. "Options On Money Market Futures," Page 224. Accessed Jan. 14, 2020.

  3. The Options Industry Council. "Covered Call (Buy/Write)." Accessed Jan. 20, 2020.