Headcount at banks' commodity units down 21 pct since 2011 By: Reuters: Company News August 22, 2013 at 12:47 PM EDT * BNP Paribas replaces RBS in top 10 investment bank list Read More >> Related Stocks: Bank of America Bonavista Ene TR UT Citigroup Goldman Sachs Group JPMorgan Chase & Co Morgan Stanley Royal Bank Scotland Group Plc