New Delhi, Dec 10 (ANI): Trading at the Bombay Stock Exchange today closed points 71.16 down to stand at 21249.80. At the National Stock Exchange the Nifty closed 31.05 points down to stand at 6,322.85. Hindustan Zinc and Oberoi Realty were among the top gainers of Group A with an increase of 7.03% and 5.21% along with Indian Hotels Company Ltd. and MRF Ltd with an increase of 5.05% and 4.54% respectively, while the top losers of Group A include NTPC and Torrent Power Ltd. with a decrease of 11.26% and 4.83% along with Adani Power Ltd. and Jaypee Infratech Ltd. with a decrease of 4.43% and 4.40% at the close of the markets. The Auto sector is down 11.03 points at 12,455.14, while the banking sector is down 244.17 points at 13,510.63 and the realty sector is down 20.76 points at 1,380.42. The Indian currency is down 0.04% at Rs 61.16 per dollar.