The combined market capitalisation of six of India's 10 most valued companies jumped by ₹75,257 crore in the week ended December 19. TCS and Infosys emerged as the biggest winners as their m-caps increased by ₹22,595 crore and ₹16,972 crore, respectively. Reliance Industries, Airtel, State Bank of India and Larsen & Toubro were the other gainers.