The Sensex and Nifty reversed their early losses to gain nearly half-a-per cent in late trading on Wednesday. Sensex was up 0.37% at 71,822.83 points while Nifty gained 0.45% at 21,840.05 points.

The combined market valuation of five of the top 10 valued firms eroded by Rs 1,67,936.21 crore last week, with HDFC Bank emerging as the biggest laggard. ICICI Bank, Infosys, Bharti Airtel, Life Insurance Corporation of India (LIC) and ITC were the gainers in the top-10 pack.