New Delhi, Jan 02 (ANI): Trading at the Bombay Stock Exchange today closed 277.77 points down to stand at 20,862.71. At the National Stock Exchange the Nifty closed 80.50 points down to stand at 6,215.40. Power grid corporation of India Ltd. and Ashok Leyland were among the top gainers of Group A with an increase of 2.47% and 2.33% along with Strides Arcolab Ltd. and Zee Entertainment Enterprises Ltd. with an increase of 1.57% and 1.16% respectively, while the top losers of Group A include JPINFRATEC and Century Tex with a decrease of 7.00% and 6.61% along with Adani Power and Suzlon Energy with a decrease of 6.45% and 6.43% at the close of the markets. The Auto sector is down 120.29 points at 12,154.28 while the banking sector is down 264.05 points at 12,746.34 and the realty sector is down 44.95 points at 1,429.84. The Indian currency is down 0.34% at Rs 62.11 per dollar.