New Delhi, May 24 -- The market valuation of six of the top-10 most valued firms spiked by Rs 74,111.57 crore in a week, with Reliance Industries emerging as the biggest gainer. Reliance Industries added Rs 24,696.89 crore, taking its market valuation to Rs 18,33,117.70 crore.

From the pack, the gainers were Reliance Industries, ICICI Bank, Tata Consultancy Services (TCS), Bajaj Finance, Larsen & Toubro, and Life Insurance Corporation of India (LIC) while HDFC Bank, Bharti Airtel, State Bank of India and Hindustan Unilever faced erosion from their valuation.

HDFC Bank's mcap dipped by Rs 2,094.35 crore to Rs 11,79,974.90 crore and that of ICICI Bank surged Rs 14,515.93 crore to Rs 9,06,901.32 crore. State Bank of India declined by Rs 12,7...