The S&P 500 fell nearly 2 percent on Tuesday, putting it on track for its worst day since an early August meltdown.The S&P 500 fell nearly 2 percent on Tuesday, putting it on track for its worst day since an early August meltdown. Standard & Poor’s 500-Stock Index, Stocks and Bonds, United States Economy, Oil (Petroleum) and Gasoline, Factories and Manufacturing, Nasdaq Composite Index Read More