Published: Feb 16, 2012 1:57 PM EST

NEW YORK (AP) - Some of the world's biggest banks as well as some securities firms may face a downgrade in their credit ratings.

Moody's Investors Service says it may take the action because the long-term prospects for profitability and growth are shrinking at the affected institutions.

 They include Citigroup, Bank of America, Goldman Sachs, JPMorgan Chase and Morgan Stanley.