New Delhi, Dec 23 (ANI): Trading at the Bombay Stock Exchange today closed 259.65 points up to stand at 25,850.30. At the National Stock Exchange the Nifty closed 79.85 points up to stand at 7,865.95. GAIL (India) Limited and Hindalco Industries Limited were among the top gainers of group A with an increase of 6.09% and 5.78% along with Vedanta Limited and Bharat Heavy Electricals Limited with an increase of 3.95% and 3.89% respectively, while the top losers of group A includes Mahindra and Mahindra Limited and Asian Paints Limited with a decrease of 0.59% and 0.48% along with Adani Ports and Special Economic Zone Limited and Bharat Petroleum Corporation Limited with a decrease of 0.47% and 0.40% at the close of the markets. The Auto sector is up 31.08 points at 18213.95 while the Banking sector is up 158.98 points at 19286.71 and the Realty sector is up 16.14 points at 1335.26.The Indian currency was 0.26% down at Rs . 66.15 per dollar.