UBS (UBS) boosts its trading loss estimate to $2.3B, but continues to dismiss calls for CEO...

|About: UBS Group AG (UBS)|By:, SA News Editor

UBS (UBS) boosts its trading loss estimate to $2.3B, but continues to dismiss calls for CEO Oswald Gruebel's resignation. UBS said the rogue trader hid his loss with fake hedges, but sources bank insiders knew enough to question the trader's actions early on, but failed to report on the trades.