Did Not See That Coming

May 17, 2007 (Bloomberg) — Bank of Montreal, stung by the biggest trading loss in Canadian history, said the debacle will cost at least 50 percent more than originally forecast and started an investigation into potential “irregularities.”

May 17, 2012 JPMorgan’s Trading Loss Is Said to Rise at Least 50%. The trading losses suffered by JPMorgan Chase have surged in recent days, surpassing the bank’s initial $2 billion estimate by at least $1 billion, according to people with knowledge of the losses.