Hillsborough Sheriff deputy patrols outside the gate of JPMorgan Chase annual stockholders meeting held Tuesday, May 15, 2012, in Tampa, Fla. Gleckman argues that a tax on security investments may stop the type of bad behavior that led to the JPMorgan $2 billion loss, but it might have terrible unintended consequences. (Scott Iskowitz/AP)

Jamie Dimon, the CEO of the bank, told shareholders that the loss should have never happened.