New Delhi, Jan. 23 -- The stock market on Friday failed to build on the previous session's strong rebound and ended lower in a volatile session amid selling across sectors.

At close, the Sensex was down 769.67 points or 0.94% at 81,537.70, and the Nifty was down 241.25 points or 0.95% at 25,048.65. BSE midcap index fell 1.5% and smallcap index down over 2%.

The overall market capitalisation of BSE-listed firms dropped to below Rs 452 lakh crore from Rs 458.5 lakh crore in the previous session.

All sectoral indices ended in the red with capital goods, power, realty, PSU Bank, media down 2-3%.

Indian rupee remained under pressure, touching a fresh record low at 91.97 per dollar intraday.

Biggest Nifty losers were Adani Enterprises, Adani...