The combined market valuation of five of India's 10 most-valued companies surged by ₹84,559 crore in the week ended April 11. Hindustan Unilever recorded the best gain as its m-cap jumped by ₹28,700 crore to ₹5,56,054 crore. Reliance Industries, Airtel, Bajaj Finance and ITC also emerged as gainers, while HDFC Bank, TCS, ICICI Bank, SBI and Infosys faced m-cap erosion.