Seven of the country's top-10 firms lost a total of over Rs 69,000 crore from their market capitalisation, while state-run NTPC and IT bellwether Infosys Technologies saw their valuations rise.

The numero-uno in the list, Reliance Industries Ltd (RIL) saw its valuation dipping by Rs 29,157.16 crore to Rs 3,36,395.96 crore for the week ended October 24. Shares of the company declined nearly eight per cent to close at Rs 2,047.30 on at the end of Friday's trade on the Bombay Stock Exchange.

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RIL is followed by state-run oil firm ONGC that lost Rs 13,603.22 crore from its market cap, while power utility NTPC added Rs 618.41 crore to its valuation.

The total market cap of ONGC dipped to Rs 2,51,338.

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