Dow plunged 998.5 pts at its worst

Dow was trading weak yesterday but still within reasonable limits until a sudden plunge one and a half hour before closing. This is almost a 10% drop in a day and panic was in the air. It quickly recovered 650 pts to close at 10520, losing 347.8 pts. Though buy orders kicked in after the sharp plunge, the sentiment was badly hit.

It was reported that it could be due to a trading error and