The Big Banks Top 10 Big Banks in Forex Deutsche Bank -15.18%Citi -14.98%Barclays – 10.24%UBS – 10.11%HSBC – 6.93%J.P. Morgan – 6.07%RBS – 5.62%Credit Suisse – 3.70%Morgan Stanley – 3.15%Merrill Lynch -3.08%