S&P 500 hits lowest since March as rate fears deepen

The S&P 500 fell on Thursday to its lowest since March as Wall Street became more worried that the Federal Reserve might raise U.S. interest rates as early as June. The timing of future Fed rate hikes in the face of a sluggish economy is a major ongoing concern among stock investors who have benefited from historically low borrowing costs since the 2008 financial crisis. In a new blow to Wall Street's confidence, New York Fed President William Dudley said the U.S. economy could be strong eno