New Delhi, Aug 20 (ANI): Trading at the Bombay Stock Exchange today closed323.82 points down to stand at 27,607.82. At the National Stock Exchange the Nifty closed 122.40 points down to stand at 8,372.75. Delta Corp Ltd and Lupin Ltd were among the top gainers of group A with an increase of 8.42% and 5.39% along with ITC Ltd and Crisil Ltd with an increase of 3.90%and 2.96% respectively, while the top losers of group A include Amtek Auto Ltd and Central Bank of India with a decrease of 28.37% and 17.39% along with Videocon Industries Ltd and Vakrangee Limited with a decrease of 16.88% and 16.33% at the close of the markets. The Auto sector is down 353.22 points at 19,191.56 while the Banking sector is down 499.82 points at 20,956.58 and the Realty sector is down 57.53 points at1,334.52.The Indian currency is up 0.34% at Rs 65.49 per dollar.