This just happened last week in Tokyo. A trader put in 610,000 shares at 1 penny instead of 1 share at 610,000 yen. OOOPs. Rogue trader? probably not but it is turning out to be a 300 million dollar error. The system wouldn’t let them fix the error quickly so people started snapping up the shares. Most firms are giving back the shares and the exchange is going to be liable but man what a bad entry. I was pissed when I took out $300 out the ATM instead of $30. —Shane