New Delhi, Feb 18 (ANI): Trading at the Bombay Stock Exchange today closed 145.47 points up to stand at 20,609.53. At the National Stock Exchange the Nifty closed 53.80 points up to stand at6,127.10. ABB India Ltd. and Jindal Steel were among the top gainers of Group A with an increase of 12.44% and 7.03% along with Siemens and Adani Power Ltd. with an increase of 6.22% and 5.97% respectively, while the top losers of Group A include Hindustan Zinc and Motherson Sumi with a decrease of 2.56% and 2.27% along with Suzlon Energy and Jain Irrigation with a decrease of 2.21% and 1.75% at the close of the markets. The Auto sector is up 112.06 points at 12,171.03 while the banking sector is up 226.84 points at 12,025.21 and the realty sector is up 6.01 points at 1,206.03. The Indian currency is down 0.32% at Rs 62.16 per dollar.