NEW YORK--(BUSINESS WIRE)--Fitch Ratings has taken the following rating actions on tranches from nine collateralized debt obligations (CDOs) backed primarily by Trust Preferred (TruPS) securities issued by banks: --Affirmed 53 tranches; --Upgraded three tranches; --Revised various Rating Outlooks. KEY RATING DRIVERS Credit Quality of Collateral: For all the transactions, the credit quality of the collateral portfolios, as measured by a combination of Fitch's bank scores and ratings has improved