https://www.realclearmarkets.com/ar..._another_too-good-to-be-true_story_97309.html
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Dykstra advised almost exclusively buying deep-in-the-money call options which give a holder the right to purchase a certain number of shares of stock at a certain price (the strike price) by a certain date (set forth in the options contract). The strike price of a deep-in-the-money option is well below that of the actual price of the stock, which is why it's called in-the-money. Since these options contracts sell for considerably less than the actual price of a share of the stock, Dykstra promoted this strategy as a way for small investors (presumably his audience) to "control" significant blocks of stock and limit their risk. Dykstra advocated exercising these options quickly, on small moves upward in the stock, often booking as little as $1,000 profits on a position. His strategy was to build up lots of little wins.
Dykstra has claimed that his system had picked 99 winners to just 1 loser, but Comeau points out that because options contracts remain open until you exercise them or they expire, Dykstra was sitting with lots of potential money-losers that he wasn't counting as bad bets-sort of like not adding up the losses on stocks you've purchased unless you sell them.”