A sharp stock market selloff accelerated into the closing bell Wednesday, erasing year-to-date gains for the S&P 500 and the Dow Jones Industrial Average, while the Nasdaq Composite finished in correction territory. The Dow DJIA, +1.33% dropped by around 608 points, or 2.4%, to finish near 24,583, according to preliminary figures, while the S&P 500 SPX, +1.59% plunged 3.1% to around 2,656. The losses left the S&P 500 down around 0.7% and the Dow off around 0.6% for 2018. The Nasdaq COMP, +2.26% dropped 4.4%, leaving it 12.6% below its August high. A correction is often defined as a pullback of at least 10%.