The combined market valuation of seven of India's 10 most valued firms surged by ₹1.28 lakh crore in the week ended November 21. Reliance Industries and Bharti Airtel emerged as the biggest gainers. HDFC Bank, TCS, State Bank of India, Infosys and Hindustan Unilever were also among the gainers, while Bajaj Finance, LIC and ICICI Bank saw their valuations dip.