The Dow tumbled 512 points -- its ninth deepest point drop ever -- as fear about the global economy spooked investors.
All three major indexes tumbled more than 4% Thursday and erased all their gains for the year. The indexes have also pushed into "correction" territory -- defined as a 10% drop from recent highs. The Dow, Nasdaq and S&P 500 have all fallen 10% in just the last 10 days.
http://money.cnn.com/2011/08/04/markets/markets_newyork/index.htm?hpt=hp_c1
