January 30, 2008 17:40 EST
Jan. 30 (Bloomberg) -- Standard & Poor's said it cut or may reduce ratings of $534 billion of subprime-mortgage securities and collateralized debt obligations, as home loan defaults rise.
The downgrades may extend losses at the world's banks to more than $265 billion and have a ``ripple impact'' on the broader financial markets, S&P said.
The securities represent $270.1 billion, or 47 percent, of subprime mortgage bonds rated between January 2006 and June 2007, S&P said today in a statement. The New York-based ratings company also said it may cut 572 CDOs valued at $263.9 billion.
The downgrades may increase losses at European, Asian and U.S. regional banks, credit unions and the 12 Federal Home Loan Banks, S&P said. Many of those institutions haven't written down their subprime holdings to reflect their market values and these downgrades may force their hands, S&P said.
``It is difficult to predict the magnitude of any such effect, but we believe it will have implications for trading revenues, general business activity, and liquidity for the banks,'' S&P said. The ratings company will start reviewing its rankings for some banks, especially those that ``are thinly capitalized.''
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