This is a very old article. But the concept doesn't change. The idea is to buy a zero-coupon bond (principal protected) and an option contract (for higher gains). So the worst case is you don't have any return and also without any loss. The best case is you have superior gains on option contract. But is it really better than S&P 500 index investing? Probably not. Is an active mutual fund really better than S&P 500 index investing? Probably not. Is an active trading really better than S&P 500 index investing? Probably not as well. You really need better strategies to beat the market (S&P 500 index).