@Shop:The Dow Jones Industrial Average fell sharply Monday, in its worst day since June, as the summer rally fizzled out and fears of aggressive interest rate hikes returned to Wall Street.The Dow fell 643.13 points, or 1.91%, to 33,063.61. The S&P 500 dropped 2.14% to 4,137.99, and the Nasdaq Composite tumbled 2.55% to 12,381.57, respectively. It was the worst day of trading since June 16 for the Dow and the S&P 500.Those losses come on the back of a losing week, which snapped a four-week winning streak for the S&P 500. Still, the broader market index remains about 13% above its June lows.Investors are anticipating what could be a volatile week of trading ahead of Federal Reserve Chairman Jerome Powell's latest comments on inflation at the central bank's annual Jackson Hole economic