1992 was sent to Singapore as the futures delivery supervisor and soon became the trading supervisor. One person is also the person in charge of trading and delivery, which makes the function of the internal restrictive organization of the bank lose. In order to get personal dividend income and improve her position in the bank, Allison used false accounts to misappropriate clients' funds, forged false authorization documents, concealed trading losses and continued to invest in wrong bets.

1994, Li Sen shorted the cross-market arbitrage of Nikkei 225 stock index options, and sold the call options and put options of Nikkei futures at the same time. By the end of 1994, Nissen obviously made a lot of money, and the profit of Bahrain Bank increased by 8 times compared with last year. 1995, Allison continued to arbitrage Nikkei options, and the break-even point of trading portfolio positions was between 18500- 19500. 199565438+1October 17 After the Kobe earthquake, the Nikkei index plummeted. 165438 on October 23rd, and the Nikkei index fell below 17800. In order to recover the defeat, Nissen bought a large number of Nikkei futures and sold Japanese bonds and interest rate futures at the same time in an attempt to influence the price trend. But in the end, due to its inability to return to heaven, on February 23, Nissan bought 7 billion US dollars of Nikkei index futures, 20 billion US dollars of bonds and interest rate futures, and lost 654.38 billion US dollars after settlement.