Goldman Sachs Group Inc. (GS), the Wall Street bank that generated 60 percent of its 2011 revenue from trading, recorded losses from that business on 17 days in the fourth quarter, down from 21 days in the prior quarter. The firm’s traders lost more than $100 million on two of those days, according to the New York-based company’s annual filing with the Securities and Exchange Commission. They produced more than $100 million on nine out of 63 total days in the quarter that ended Dec. 31, the filing showed. Goldman Sachs, the fifth-biggest U.S. bank by assets, had trading losses on 54 days during 2011, the highest ... (full story)