In contrast to buying options, selling stock options does come with an obligation - the obligation to sell stock to a buyer if that buyer decides to exercise the option and you are "assigned" the exercise obligation. "selling" options is often referred to as "writing" options.

When you sell (or "write") a Call - you are selling an options contract you are selling a buyer the right to purchase stock from you at a specified strike price for a specified period of time, regardless of high the market price of the stock may climb.

Covered Calls: One of the most popular call writing strategies is known as a covered call. In a covered call, you are selling the right to buy stock that you own. If a buyer decides to exercise his or her option to buy the underlying stock, you are obligated to sell your stock at the strike price - whether the strike price is higher or lower than your original cost of the stock. Sometimes an investor may buy stock and simultaneously sell (or write) a call on the stock. This is referred to as a "buy-write."

Examples: You buy 100 shares of a stock at $20, and immediately write one covered Call option at a strike price of $25 for a premium of $2 You immediately take in $200 - the premium.

• If the stock’s market price stays under $25, then the buyer’s option will expire worthless, and you have gained the $200 premium.
• If the stock price rises above $25, you may have to sell your stock and will lose its upside appreciation above $25 per share.
• Or, you can close out your position by buying an option on the same stock with the same strike price and expiration in a closing transaction to at least partially reduce a potential loss.

Uncovered Calls: In an uncovered Call, you are selling the right to buy stock from you which you don’t actually own at the time. How does that work?

Examples: You write a Call on a stock for a premium of $2, with a current market price of $20, and a strike price of $25. Again, you immediately tale in $200 - the premium.

• If the stock price stays under $25, then the buyer’s option expires worthless, and you have gained $200 premium.
• If the stock price rises to $30 and the option is exercised, you will have to buy 100 shares of the stock at the $30 market price to meet your obligation to sell it at $25. You lose $300 - the difference between your total $3,000 purchase cost for the stock, minus your proceeds of $2,500 from the sale of exercised stock and the $200 premium you took in for selling the option..

As this example demonstrates, uncovered Call writing carries substantial risk if the stock price increases sharply.

The information above on buying and selling options is designed only as a brief primer on options. Additional, and important information can be obtained in reviewing Basic Options Strategies that follow this section and in Understanding Stock Options.