Updated throughout the day

Yahoo! (NASDAQ: YHOO) has asked potential buyers to sign highly restrictive non-disclosure agreements (Reuters)

Groupon has cut the size of its IPO (WSJ)

Hedge fund SAC faces another government probe about improper trading (WSJ)

The new head of UBS (NYSE: UBS) will cut the size of the bank’s investment operations (WSJ)

Douglas A. McIntyre