Amid a strong stock market where the benchmark Sensex gained 485.19 points or 1.89 per cent, top-seven companies, including RIL, ITC, CIL, HDFC Bank, Infosys and HDFC, saw surge in their m-cap.
ONGC, SBI and ICICI Bank, however, suffered losses in their market valuation.
Software giant TCS's market value zoomed Rs 31,790.15 crore to Rs 5,10,238.84 crore, becoming the biggest gainer in the top-10 companies list.
Tata Consultancy Services (TCS), the country's largest software services exporter, had on Wednesday attained a market valuation of over Rs 5 lakh crore, becoming the first company in Indian markets to achieve this milestone.
The m-cap of RIL surged Rs 14,567.71 crore to Rs 3,30,400.89 crore, while HDFC's value soared Rs 13,052.61 crore to Rs 1,66,777.61 crore.
ITC saw its market-cap climb Rs 10,418 crore to Rs 2,84,306.96 crore, while Infosys added Rs 5,693.55 crore to Rs 1,92,504.06 crore.
Similarly, HDFC Bank's value went up by Rs 734.71 crore to Rs 2,01,262.25 crore and that of CIL rose by Rs 536.89 crore to Rs 2,37,621.63 crore.
On the other hand, ONGC lost Rs 8,127.71 crore to Rs 3,42,989.60 crore in its m-cap, while SBI's value declined by Rs 4,498.1 crore to Rs 1,86,732.86 crore.
The m-cap of ICICI Bank fell by Rs 145.2 crore to Rs 1,70,657.58 crore.
In the ranking of top-10 firms, TCS stood at number position, followed by ONGC, RIL, ITC, CIL, HDFC Bank, Infosys, SBI, ICICI Bank and HDFC.
Over the past week, the BSE benchmark Sensex gained 485.19 points or 1.89 per cent to 26,126.75.