After a few days of relative calm on the heels of last week's tumultuous trading, stocks are once again seeing massive selling. Thursday's action was driven by growing concern about economic growth, both here and abroad. In afternoon trade, the Dow was down 474 points, which would be good for the 16th worst Dow selloff ever if it were to hold. Here are the largest 20 selloffs, on a points basis, in the history of the Dow.
20 Largest Dow Jones Industrial Average Losses (Points)