BREAKING NEWS: Selling in Stocks Intensifies, Dow Off 450 Points

Stocks, already sharply lower on growing fears about slowing global growth, took another sharp turn for the worse around 10 a.m. on more disappointing economic data. Existing home sales unexpectedly fell in July and a reading on the manufacturing sector in the Philadelphia region was abysmal. The Dow is off 450 points, and the yield on the 10-year Treasury has fallen to an historic low of 1.99%.