"This loss exceeded our expectations and represents a significant deterioration of surplus regulatory capital," Moody's said in a statement.
Moody's warned that it expected Fannie Mae to report sizeable losses in the first half of 2008, and possibly a net loss for the year, due to continued deterioration in U.S. residential mortgages.
However Moody's said that its concerns were partially mitigated by news that regulator the Office of Federal Housing Enterprise Oversight may decrease the amount of surplus capital required to be held, reducing the probability Fannie Mae would breach the minimum.
