414 Part IV: Additional Considerations mitments to option purchases so that his overall risk in a one-year period can be kept down to nearly 10%. Example: An investor might decide to put 2½% of his money into three-month option purchases. Thus, in any one year, he would be 1isking 10%. At the same time he would be earning perhaps 6% from the overall interest generated on the fixed­ income securities that make up the remaining 90% of his assets. This would keep his overall risk down to approximately 4.6% per year. There are better ways to monitor this risk, and they are described shortly. The potential profits from this strategy are limited only by time. Since one is owning options - say call options - he could profit handsomely from a large upward move in the stock market. As with any strategy in which one has limited risk and the poten­ tial of large profits, a small number of large profits could offset a large number of small losses. In actual practice, of course, his profits will never be overwhelming, since only approximately 10% of the money is committed to option purchases. In total, this strategy has greatly reduced 1isk with the potential of making above-average profits. Since the 10% of the money that is invested in options gives great leverage, it might be possible for that portion to double or triple in a short time under favorable market conditions. This strategy is something like owning a convert­ ible bond. A convertible bond, since it is convertible into the common stock, moves up and down in price with the price of the underlying stock. However, if the stock should fall a great deal, the bond will not follow it all the way down, because eventu­ ally its yield will provide a "floor" for the price. A strategy that is not used very often is called the "synthetic convertible bond." One buys a debenture and a call option on the same stock. If the stock rises in price, the call does too, and so the combination of the debenture and the call acts much like a convertible bond would to the upside. If, on the other hand, the stock falls, the call will expire worthless; but the investor will retain most of his investment, because he will still have the debenture plus any interest that the bond has paid. The strategy of placing 90% of one's money into risk-free, interest-bearing cer­ tificates and buying options with the remainder is superior to the convertible bond or the "synthetic convertible bond," since there is no risk of price fluctuation in the largest portion of the investment. The Treasury bill/option strategy is fairly easy to operate, although one does have to do some work every time new options are purchased. Also, periodic adjust­ ments need to be made to keep the level of risk approximately the same at all times. As for which options to buy, the reader may recall that specifications were outlined in Chapters 3 and 16 on how to select the best option purchases. These criteria can be summarized briefly as follows: