Market capitalisation (m-cap) of nine of the top 10 most valued firms rose by ₹2.51 lakh crore in the last week, with Tata Consultancy Services (TCS) emerging as the biggest gainer. Of the top 10 firms, Reliance Industries was the sole firm whose valuation dropped. While TCS' m-cap rose by ₹74,534.87 crore, Reliance Industries' m-cap fell by ₹59,901.07 crore