Mumbai: Amid a strong stocks rally, the combined market capitalisation (m-cap) of the country's top-10 firms advanced by Rs 1,25,991 crore last week, with software giant TCS surpassing energy major ONGC to become the second most valuable company.

With m-cap of Rs 2,30,071 crore as on Friday's close on the BSE, TCS toppled state-owned ONGC, which had a market value of Rs 2,29,329 crore. TCS saw the maximum addition of Rs 22,029 crore to its market value during the week. ONGC added Rs 13,859 crore.

In a market that saw the BSE 30-share index, Sensex, gain over 7 per cent during the week, RIL remained the most-valued company in the country. Its m-cap swelled by Rs 18,598 crore to Rs 2,65,483 crore.

CIL was at the fourth place, followed by ITC, Infosys, Bharti, NTPC, SBI and HDFC Bank.

 The m-cap of Coal India Ltd surged by Rs 16,170 crore to Rs 2,11,219 crore, while ITC gained Rs 11,006 crore to Rs 1,60,533 crore.

 Infosys added Rs 5,524 crore taking its m-cap to Rs 1,54,851 crore, while Bharti Airtel's value climbed Rs 5,791 crore to Rs 1,48,160 crore. Power utility NTPC's market valuation accelerated by Rs 12,574 crore to Rs 1,41,986 crore.

Furthermore, SBI's m-cap soared by Rs 12,433 crore to Rs 1,19,792 crore and HDFC Bank gained Rs 8,007 crore in market value to Rs 1,08,874 crore.