The combined market valuation of all the top-10 most valued firms plunged Rs 4,95,061 crore last week, in line with a bearish trend in equities, where Tata Consultancy Services and Reliance Industries faced the sharpest erosion. Last week, the BSE benchmark tanked 4,091.53 points or 4.98%. The Indian equity market recorded its steepest weekly decline since June 2022, with the Nifty losing 4.77%.