Sensex gained 36 points to close at 20,729 today. Nifty also snapped its 5-day losing streak and closed in the positive terrain for the first time in 2014. The 50-share index ended at 6,172, up by 10.50 points or 0.17 per cent. Healthcare, auto and metal led the upmove while capital goods, realty and power sectors ended in the red.