Column 8

Selling Options

May 8, 2002

Last time we briefly discussed buying options.  Another basic option strategy is selling options.  When buying an option, your loss is limited to the amount you paid for your option(s), and the potential gain is very large, especially when compared with the size of the investment.  When you sell an option, your gain is limited to the amount you collected from the sale of the option, but your possible loss is much greater.

Thus, selling an option can be a much riskier proposition, when compared with buying an option.  The selling strategy is risky when the position is uncovered, but much less risky when the position is covered.

A call seller is covered if
  • He owns enough stock so he can deliver (sell) it to the call owner, in the event he is assigned an exercise notice (notification the call owner has exercised his rights and demands to buy the underlying stock at the strike price)

A put seller is covered if
  • He is short a sufficient amount of stock so he can buy stock from the put owner, in the event he is assigned an exercise notice and has to buy the stock at the strike price
So why would anyone sell an option?  There are situations in which selling an option incurs a limited amount of risk.  Those are the situations that I want to share with you in the coming weeks.  We are not going to ever recommend selling options when the risk is great.  Sometimes there is a large risk that is not apparent, and we will avoid those risks also.

Many brokerage houses allow you to sell an uncovered put, if you have a sufficient amount of cash in your account so you can buy stock, in the event you are assigned an exercise notice on the put you sold.  That means you must have cash equal to the strike price multiplied by the number of puts.  For example, if you sell 3 puts with a strike price of 30, you may be obligated to purchase 300 shares at 30.  The cash requirement is $9000 (plus commissions).  You can use the cash you receive when you sell the puts as part of the cash requirement.

If a call seller does not meet the condition of owning enough stock, he is uncovered (or naked).  This is a risky position for the potential loss is unlimited.  Some brokerage houses consider this to be so risky they do not allow you to sell an uncovered call under any conditions.  Others allow a trader to have uncovered calls, but they require large deposits of margin money to protect themselves against loss.  I recommend you never consider this strategy.

Why is the potential loss from selling an uncovered call unlimited?  If you are short a call option, and if the stock rises higher than the strike price, you will eventually be assigned an exercise notice.   Since you must deliver the stock to the person who exercised the call option, you must go to the marketplace to buy that stock so you can deliver it.  In theory there is no limit to how high the stock can go, so there is no limit to the price you will have to pay to buy that stock and there is no limit to the amount you can lose.  In practice, there really is such a limit, but since that limit is unknown, and since it is possible to lose a very substantial amount of money, selling uncovered calls is the most dangerous of all option strategies.

Selling a covered call, however, entails none of the risks of selling an uncovered call, and is a conservative option strategy.  In fact, it is the strategy I recommend to most public investors.   I believe most investors can make money more often and have safer stock portfolios using this strategy.  The strategy is called covered call writing.  Write is the term often used to describe the selling of a call option when the position is covered.  

Next time we’ll take a closer look at covered call writing.




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