Eight out of the country's top 10 coveted firms lost Rs 36,000 crore from their market cap during the week ended August 22, while power equipment maker BHEL and telecom major Bharti Airtel together added Rs 6,074 crore to their kitties.
Bharti Airtel gained Rs 1,348 crore, with its total market valuation at Rs 1,56,240 crore, while state-run BHEL added Rs 4,726 crore to its kitty and its market cap stood at Rs 1,12,482 crore for the week ended August 22.
Meanwhile, the country's most-valued firm, Reliance Industries, lost Rs 16,628 crore last week, taking its total market valuation to Rs 3,03,544 crore at the end of the week.
The company had a market cap of Rs 3,20,172 for the week ended August 16.
Two state-run firms -- ONGC and NTPC -- together lost Rs 5,047 crore from their market valuations last week.
At the end of the week, ONGC's market cap stood at Rs 2,54,825 crore and NTPC's valuation was at Rs 1,68,908 crore.
The country's largest iron ore producer, NMDC, lost Rs 3,231 crore from its market valuation and state-run trading firm MMTC lost Rs 5,049 crore from its market cap.
The total market valuation of NMDC stood at Rs 1,41,322 crore and MMTC at Rs 1,38,036 crore.