1. Plunge!

    Dow Drops 250 Points

    Specialist John O'Hara, right, works at his post on the floor of the New York Stock Exchange Tuesday, Oct. 23, 2012. Stocks are falling sharply at the opening of trading on Wall Street after 3M and DuPont slashed their earnings forecasts. (AP Photo/Richard Drew)

    Richard Drew / AP Photo

    The Dow was down some 248 points in early-morning trading on Tuesday—almost 2 percent of its total value—much of that drop happening in just the first few minutes of trading. The NASDAQ is down almost 40 points, around 1.3 percent, hitting a low not seen since August. There were no immediate reasons for the sell-off, but one big data point was DuPont, the multinational chemical company, reporting disappointing earnings and announcing 1,500 layoffs.

    Read it at CNBC