As a trader, Leeson had extremely bad luck. By mid February 1995, he had accumulated an enormous position—half the open interest in the Nikkei future and 85% of the open interest in the JGB future. The market was aware of this and probably traded against him. Prior to 1995, however, he just made consistently bad bets. The fact that he was so unlucky shouldn’t be too much of a surprise. If he hadn’t been so misfortunate, we probably wouldn’t have ever heard of him.