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August 28, 2014

Short-Term Put Options

Last week we talked about short-term call options and this week I thought it would be appropriate to discuss short-term put options. The mentality behind short-term put options is probably different than the mentality behind short-term call options. Many times option traders consider short-term put options as a means of protection. With the market extended and the possibility of stocks moving lower in the near future, it might be a good time to talk about put options.

If a trader buys a put option, he or she has the right to sell the underlying at a particular price (strike price) before a certain time (expiration). If a trader owns 100 shares of stock and purchases a put option, the trader may be able to protect the position fully or to some degree because he or she will have the right to sell the stock at the strike price by expiration even if the shares lose value.

Some investors who are looking to protect an investment only consider buying short-term puts, or front-month puts for protection. The problem however, is that there is a flaw to the reasoning of purchasing short-term put options as protection. Similar to short-term call options, the contracts have a higher option theta (time decay) and relying on short-term puts to protect a straight stock purchase is not necessarily the best way to protect the stock.

Although short-term puts may be cheaper than longer expiration puts, if an option trader was to continually purchase short-term puts as protection, it could end up being a rather expensive way to insure the stock particularly if the stock never declines to the short-term puts strike price. If a put option with a longer expiration was purchased, it would certainly cost more initially, but time decay (premium eroding) would be less of a factor due to a smaller initial option theta. Here is an example using short-term put options.

Using a hypothetical trade, let’s say a stock is trading slightly above $13 and our hypothetical trader wants to by the stock because he or she thinks the stock will beat its earnings’ estimates in each of the next two quarters. This investment will take at least six months because the trader is counting on the earning reports to move the stock higher.

Being a smart options trader, our trader wants some insurance against a potential drop in the stock just in case. The trader decides to buy a slightly out-of-the-money September 13 put, which carries an ask price of 0.50 (rounded for simplicity purposes). That $0.50 premium represents almost 4 percent of the current stock price. In fact, if the option trader rolled the short-term put option month after month, it would create a big dent in the initial outlay of cash. After about seven months (assuming the stock hangs around $13 and each monthly put option costs 0.50) the trader would lose more than 25 percent on the $13 investment.

If the stock drops in price, then the ultimate rationalization for the strategy is realized; protection. The put provides a hedge. The value of the option will increase as the stock drops, which can offset the loss suffered as the stock drops.

Buying a put option is a hedge and can be considered a decent insurance policy for a stock investment. Buying short-term put options as a hedge can make it an extra expensive hedge due to time decay (option theta). Option traders and investors can usually find better ways to protect a stock. To learn new and different approaches, please visit the Learn to Trade section of our website.

John Kmiecik

Senior Options Instructor

Market Taker Mentoring

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