michael stockman was brought in somewhat diminished role but he eventually raised similar concerns investigators say. in his prepared statement this morning roseman testified and i quote, late october 2011 shortly before global global collapse i recall mf global's european sovereign debt positions with were approaching 3.4 to 5 billion dollars. at think point he testified not only concerned about the capital risk but given the size i was concerned with the liquidity risks. he had added i discussedkers about the positions however the risk scenarios i presented were challenged as being implausible. under the investment microscope the rates agency moody's. it was their decision to downgrade mf global to junk bond status a week before the firm filed for bankruptcy that set in motion investigators described as a classic run on the bank and sealed the firm's fate. however lawmakers will press a top moody's officer why