A look at the large banks ahead of what is expected to be a mass downgrade by Moody's after the bell. Bank of America -3.4%, JPMorgan -2.2%, Citigroup -3%, Goldman -2.3%. Morgan Stanley (NYSE:MS) - which faces a multiple-step cut to just above junk status - off 2%. Not expected to be cut, Wells Fargo (WFC -0.9%)