Why The Dow Jones Industrial Average Plunged Nearly 240 Points

U.S. stocks plunged sharply in the final minutes of trading Wednesday after seesawing for much of the afternoon session. The Dow Jones Industrial Average tumbled a total of nearly 240 points by the day's end. The blue-chip index leaped as much as 159 points following the opening bell after China unveiled further stimulus measures to boost flagging growth in the world's second-largest economy.