Moody's puts major U.S. banks on review

• Goldman Sachs (NYSE:GS), JPMorgan (NYSE:JPM), Morgan Stanley (NYSE:MS), and Wells Fargo (NYSE:WFC) are on review for downgrade as the agency considers reducing its assumption for how much government support they're likely to get.
• Bank of America (NYSE:BAC) and Citigroup (NYSE:C) are also on review, but for "direction uncertain" as Moody's considers what may be more than offsetting improvements in their standalone credit strength.
• Mellon Bank (NYSE:BK) and State Street (NYSE:STT) - whose ratings are already under the scope - will also be included in this new review.
• Moody's telegraphed its intention to undertake this move back in March.
• All of the above stocks are off marginally in AH trade.
• Source: Moody's.