Riding on a strong stock market sentiment, the total market capitalisation (m-cap) of BSE-listed companies surged to a lifetime high of over Rs 111 lakh crore today. During afternoon trade, the m-cap of BSE-listed firms surged to Rs 1,11,22,815 crore or USD 1.66 trillion. Investors' wealth of BSE-listed firms, measured by market capitalisation, had yesterday surged to Rs 110.7 lakh crore (USD 1.64 trillion). The total market valuation of all listed firms on the BSE had hit a record high of Rs 100 lakh crore in November 2014. Stock market continued its winning run for the third straight session with the BSE Sensex rising over 131 points in early trade today. The bluechip index has gained 2,225.47 points or 8.52 per cent so far this year and scaled its 52-week high of 28,490.21 today. In the broader market, the BSE midcap and smallcap indices were trading 0.72 per cent and 0.35 per cent higher. BSE is among the world's 10 largest exchanges in terms of market value, while it is the biggest in terms of number of firms listed on its platform. TCS is the most valued Indian firm with a market valuation of Rs 4,96,744.88 crore, followed by Reliance Industries Ltd Rs 3,45,098.78 crore, HDFC Bank (Rs 3,24,108.87 crore), ITC (Rs 3,11,686.15 crore) and Infosys (Rs 2,39,180.85 crore).