Four of the top 10 most valued domestic firms together added ₹2,31,320.37 crore in market valuation in the past week. While Reliance Industries contributed the most with a valuation jump of ₹1,38,222.46 crore to ₹18,80,350.47 crore, it was followed by TCS whose valuation zoomed by ₹64,618.85 crore to ₹12,58,274.59 crore. Infosys and ICICI Bank were the other gainers.