Dow drops more than 200

The Dow Jones industrials have tumbled more than 200 points to their weakest finish since November 28, when the index was at 9,711.86.

The Dow closed down 211.88, or 2.1%, at 9,712.27, the biggest point drop since October 29, when it lost 275. The Nasdaq composite index slid 56.45, or 2.8%, to 1,944.46.