Covered Call Writing for Equity Options

The covered call is the most widely used options strategy on the exam and in practice. Understanding its construction and payoff pattern is the template for every other covered or protective strategy that follows in this unit.

How Is a Covered Call Constructed?

• A covered call (also called a buy-write) consists of owning 100 shares of the underlying stock and selling (writing) one call option against those shares
• The position is "covered" because the writer already owns the stock needed for delivery if the call is exercised
• The writer collects the premium upfront, which provides income and a limited downside cushion

Key point: The word "covered" means the obligation to deliver shares is backed by actual stock ownership. If you sell a call without owning the stock, that is a naked (uncovered) call, a completely different risk profile.

What Are the Covered Call's Profit, Loss, and Break-Even Formulas?

• Maximum gain is capped. If the stock rises above the strike, the call is exercised and shares are called away at the strike price. The writer keeps the premium but misses any upside beyond the strike.
• Maximum loss occurs if the stock falls to zero. The premium received only partially offsets the decline.
• The covered call writer's break-even is lower than the stock purchase price by the amount of premium received. The premium creates a small cushion.

Example: Buy stock at $50, sell a 55 call for $3

Think of it this way: You bought the stock at $50 and collected $3 in premium, so your effective cost is $47. If the stock drops to $47, you break even because the premium absorbed the loss. Above $55, though, your shares get called away, so the most you can ever make is the $5 stock gain plus the $3 premium ($8 total).

Exam Tip: Gotchas

• Maximum gain is capped at the strike price (plus premium), no matter how high the stock goes.
• The break-even is below the stock purchase price because the premium lowers it.

When Should You Use a Covered Call?

• Income generation: The primary motivation is to earn premium income on a stock position, especially in flat or slightly bullish markets
• Partial hedging: The premium provides a small cushion against a decline in the stock price; this is NOT a full hedge
• Willingness to sell: The writer must be willing to sell shares at the strike price if exercised

Market outlook: Neutral to slightly bullish. If you were strongly bullish, you would not want to cap your upside by selling a call.

Exam Tip: Gotchas

• Selling a covered call is NOT a full hedge. It only provides partial downside protection equal to the premium received. When the goal is the "best protection" or a "full hedge" for a long stock position, the answer is buying a put (protective put), not selling a call.

What Is the Covered Call's Assignment Risk?

• If the stock price rises above the strike, the call buyer is likely to exercise, and the covered writer must deliver shares at the strike price
• Early assignment is most likely just before an ex-dividend date when the call is in-the-money and the remaining time value is less than the upcoming dividend
• American-style equity options can be exercised at any time before expiration

Exam Tip: Gotchas

• Early assignment risk increases near ex-dividend dates. When the call is in-the-money and remaining time value is less than the upcoming dividend, the call buyer is likely to exercise early.

What Should You Check on Exam Day?

• Can you compute max gain, max loss, and break-even for a covered call from the stock cost, strike, and premium in a word problem?
• Do you remember that the break-even is below the stock purchase price, lowered by the premium received?
• Would you correctly reject "covered call" as the answer to a "best protection" or "full hedge" question?
• Do you know early assignment risk rises near an ex-dividend date on an in-the-money call?