Stocks rushed south Thursday, pulling down 19 of every 20 industry groups. The Nasdaq suffered a 2.8% dent, while the S&P 500 crumpled 2.1%. The IBD 50 fell 3.1%. Volume rose across the board. The Nasdaq closed at its low for the day, leaving it 6.8% off its July high and marking its sharpest pullback of the year. The S&P 500 also closed at the day’s low and is now 4.6% off its May high.