New Delhi, March 13(ANI): Trading at the Bombay Stock Exchange today closed 81.61 points down to stand at 21,774.61. At the National Stock Exchange the Nifty closed 23.80 points down to stand at 6,493.10. MMTC and BPCL were among the top gainers of Group A with an increase of 9.63% and 7.25% along with Hindustan Copp and Power Finance with an increase of 6.79% and 5.49% respectively, while the top losers of Group A include Infosys and L and T Financial Holdings with a decrease of 8.54% and 7.04% along with GMR Infra and DLF with a decrease of 6.00% and 5.94% at the close of the markets. The Auto sector is up 68.65 points at 12,688.93 while the banking sector is up 126.32 points at 13,849.85 and the realty sector is down 49.36 points at 1,373.89. The Indian currency is down 0.3% at Rs 61.03 per dollar.