10 Of The Most Expensive Typos In History

The Stock Trader’s Big Mistake

In 2005, Japan’s Mizuho Securities put up a new company for offer in its portfolio. J-Com Co. was supposed to be on offer for the tidy sum of 610,000 Yen per share.

One particular trader made the mother of all typos for the company when he sold 610,000 shares for one Yen a piece. In American money, that means he lost his firm more than $340 million.

New York Department of Education Learns a Lesson

In 2006, a bookkeeper for the New York Department of Education made a typo on a check being issued. That typo led to the department shelling out more than $1.4 million for transportation than it actually meant to.