New Delhi, Dec 6 (ANI): Trading at the Bombay Stock Exchange today closed 81.87 points up to stand at 21,039.68. At the National Stock Exchange the Nifty closed 18.80 points up to stand at 6,259.90. Oriental Bank and Tata Power were among the top gainers of Group A with an increase of 8.01% and 6.35% along with Amara Raja and UCO Bank with an increase of 5.00% and 4.92% respectively, while the top losers of Group A include Mahindra and Mahindra Financial Services Ltd. and Gujarat State Petronet Ltd. with a decrease of 2.39% and 2.11% along with Future Retail and Godrej Consumer Products Ltd. with a decrease of 2.09% and 1.84% at the close of the markets. The Auto sector is up 50.23 points at 12,292.04, while the banking sector is up 133.56 points at 13,431.82 and the realty sector is up 4.22 points at 1,367.04. The Indian currency is up 0.22% at Rs 61.62 per dollar.