Seven out of the top 10 companies lost nearly Rs 46,000 crore from their market capitalisation past week, while companies including state-run MMTC, Infosys Technologies and Tata Consultancy Services (TCS) saw their valuation surge.
The Mukesh Ambani-led Reliance Industries (RIL), which was the biggest loser of the week, lost as much as Rs 19,260.59 crore from its market capitalisation (m-cap), taking its total valuation down to Rs 3,32,058.38 crore.
During the week, when the market closed in the green only on Thursday, RIL lost a whopping 5.47 per cent to close at Rs 1,010.45 on the BSE at the end of Friday's trade.
However, three firms -- MMTC, Infosys Technologies and TCS --together added Rs 10,600.56 crore to their valuation for the week ended December 19.
RIL, which is followed by state-run oil firm ONGC saw its valuation dip by Rs 940.8 crore taking its total m-cap to down Rs 2,53,563.34 crore.
Meanwhile, trading firm MMTC inched up to the third spot by adding Rs 1,917.5 crore to its valuation, while power utility major NTPC slipped to the fourth slot from the earlier third slot by losing Rs 1,649 crore from its m-cap.
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The total m-cap of MMTC stood at Rs 1,70,864 crore and of NTPC at Rs 1,70,722.34 crore.
The country's largest iron ore producer NMDC at the fifth position lost Rs 8,820.83 crore from its valuation taking its total m-cap to Rs 1,56,883.81 crore.