Four of the top-10 most valued firms together added Rs 2.18 lakh crore in market valuation last week, with Life Insurance Corporation and State Bank of India emerging as the biggest gainers. From the top-10 pack, Reliance Industries, Tata Consultancy Services (TCS), Life Insurance Corporation of India (LIC) and SBI were the gainers. They collectively added Rs 2,18,598.29 crore in market capitalisation. On the other hand, HDFC Bank, ICICI Bank, Infosys, Bharti Airtel, Hindustan Unilever and ITC faced erosion from their valuation to the tune of Rs 1,06,631.39 crore. Last week, the BSE benchmark declined by 490.14 points or 0.67 per cent. Market valuation of LIC jumped Rs 86,146.47 crore to Rs 6,83,637.38 crore. The share price of LIC on Monday jumped nearly 6 per cent to hit the Rs 1,000 mark for the first time. SBI added Rs 65,908.26 crore, taking its valuation to Rs 6,46,365.02 crore. Market valuation of TCS climbed Rs 61,435.47 crore to Rs 15,12,743.31 crore and that of Reliance