More on McGraw-Hill (MHP -7.7%): The planned spinoff of S&P could be in jeopardy after...

|By:, SA News Editor

More on McGraw-Hill (MHP -7.7%): The planned spinoff of S&P could be in jeopardy after investors punish its parent company, apparently in partial retaliation for the downgrade of U.S. debt. Rival Moody's MCO down 7.5% in sympathy.