The combined market valuation of eight of the top-10 most valued firms surged Rs 1,21,270.83 crore last week, with Reliance Industries becoming the biggest gainer, in line with an outstanding rally in benchmark equity indices. Last week, the BSE benchmark jumped 1,027.54 points or 1.21 per cent. The BSE Sensex hit its record high of 85,978.25 on Friday. The market valuation of Reliance Industries jumped Rs 53,652.92 crore to Rs 20,65,197.60 crore. State Bank of India added Rs 18,518.57 crore taking its valuation to Rs 7,16,333.98 crore. Bharti Airtel's market valuation soared Rs 13,094.52 crore to Rs 9,87,904.63 crore and that of ITC grew by Rs 9,927.3 crore to Rs 6,53,834.72 crore. The market capitalisation (mcap) of Tata Consultancy Services (TCS) surged Rs 8,592.96 crore to Rs 15,59,052 crore. HDFC Bank's valuation climbed Rs 8,581.64 crore to Rs 13,37,186.93 crore and that of Life Insurance Corporation of India (LIC) zoomed Rs 8,443.87 crore to Rs 6,47,616.51 crore. The mcap