Stock market today, Dec. 10 -- Stock market benchmarks Sensex and Nifty 50 fell for a second straight session on Tuesday, December 9, pressured by weak global signals ahead of the US Fed policy announcement.

The Sensex slipped 436 points, or 0.51%, to close at 84,666.28, while the Nifty 50 declined 121 points, or 0.47%, to finish at 25,839.65. In contrast, mid- and small-cap indices recovered and ended in the green, outperforming the headline indices. The BSE Midcap index gained 0.60%, and the Smallcap index surged 1.27%.

"Markets remained volatile on the weekly expiry day and ended with a cut of nearly 0.5% amid mixed cues. The tone was weak from the outset, and the pressure intensified during the first hour of trade. However, support ...