A combination file photo shows Wells Fargo, Citigbank, Morgan Stanley, JPMorgan Chase, Bank of America, JPMorgan, and Goldman Sachs from Reuters archive. Photo: REUTERS/File Photo. Large US banks are optimistic they will receive a clean bill of health from the Federal Reserve this week, freeing them up to distribute billions of dollars in excess capital to investors. The central bank on Thursday will release the results of its annual bank “stress tests,” which assess how much capital banks would need to withstand a severe economic downturn. The annual exercise, introduced following the 2007-2009 financial crisis, is integral to banks’ capital...