The combined market capitalisation of six of the top 10 most valued firms surged by ₹74,111.57 crore last week. Reliance Industries was the biggest gainer, adding ₹24,696.89 crore to take its market valuation to ₹18,33,117.70 crore. ICICI Bank, TCS, Bajaj Finance, L&T and LIC also recorded gains. Meanwhile, HDFC Bank, Bharti Airtel, SBI and Hindustan Unilever saw drop in m-cap.