Eight of the 10 most valued companies saw their total market capitalisation falling by Rs 45,061 crore in the last week as the benchmark index Sensex dropped by nearly 200 points.
FMCG major ITC, TCS and Reliance Industries were the biggest losers among 10 largest companies in terms of market capitalisation on the BSE.
IT major Infosys and oil & gas giant ONGC, however, defied the trend and added a total Rs 1,324 crore to their market worths.
TCS remained at top position in terms of market valuation, followed by Reliance Industries, ITC, ONGC and Infosys in that order.
ITC's m-cap declined by Rs 10,925 crore to Rs 2,69,501 crore, while that of TCS dropped by Rs 10,406 crore to Rs 4,04,922 crore.
Energy major RIL's m-cap eroded by Rs 6,290 crore to Rs 2,86,216 crore and Bharti Airtel lost Rs 5,177 crore to Rs 1,37,370 crore.
HDFC Bank lost Rs 976 crore to Rs 1,60,837 crore, Sun Pharma lost Rs 4,354 crore to Rs 1,26,405 crore and Hindustan Unilever by Rs 2,637 crore to Rs 1,28,501 crore.
On the other hand, the m-cap of ONGC jumped by Rs 470 crore to Rs 2,42,847 crore, while Infosys' market worth shot up by Rs 854 crore to Rs 1,91,279 crore.
The 30-share bluechip index briefly climbed to three-year high by surpassing a crucial 21,000 level yesterday, it closed 199.37 points down this week -- the first loss in four weeks.