Option Strategies Details

Sell a Call
1. Speculate on a decrease in volatility and a neutral or slightly-decreasing price
Down
Neutral to Down
Strike Price plus the Premium (credit) received
Covered Put
Theoretically unlimited minus the credit received for the Call
same as Max Contract Loss
Short Call
Other names
You sell (short) a Call
Description
A trader who wants to speculate on a decrease in volatility and a neutral or slightly-decreasing price can sell a Call. The trader receives a credit, called a premium, to sell the Call and has the obligation to sell 100 shares at the strike price.
Suppose stock XYZ is trading at $23. You forecast a decrease in volatility and a neutral to slightly-decreasing XYZ price.
You sell a $24 Call for $0.50 to express this view. Your breakeven XYZ price at expiry is $24 (strike price) + $0.50 (premium received) = $24.50, but since the time component of your trade plan may not extend all the way to expiration you should be prepared to buy to close at a variety of XYZ prices as the market value of your $24 Call changes. Because the price of XYZ can increase infinitely in theory, selling a Call without owning shares as collateral or buying a further OTM Call to create a fixed-risk spread carries a high "risk of ruin". This means that an adverse price move, like a surprise earnings beat or buyout that increases price greatly, can cause catastrophic losses.