John Rusnak was hired by Allfirst Financial, a subsidiary of Allied Irish Bank, in 1993 as a currency trader. In 1996, Rusnak began taking larger risks on the
Japanese yen. By 1997, he had lost $29.1 million, which grew to $300 million in 2001. He managed to hide his losses and make it appear as though the bank was making money, which resulted in a collection of more than $433,000 in bonuses.
After writing $300,000 in
options, his total losses reached $691 million. Rusnak received a 7.5-year jail sentence and is on the hook for paying back the full $691 million. (For more on how to write options, check out our
Options Basics Tutorial.)