Led by state-owned energy major ONGC, the combined market capitalisation (m-cap) of top eight Sensex companies fell by Rs 30,004 crore last week.
TCS and ITC, however, saw rise in their market value.
RIL, ONGC, CIL, HDFC Bank, NTPC, Infosys, SBI and HUL, on the other hand, witnessed losses in a weak market during the week amid damp investor sentiment.
The BSE 30- scrip index, Sensex, fell about 2% during the trading week ended on Friday.
ONGC's market cap slipped Rs 9,369 crore to Rs 2,36,259 crore. The company's share price declined 3.81 per cent during the week.
Coal India was the next big loser as its m-cap plunged Rs 8,938 crore to Rs 2,22,809 crore.
The market value of Infosys fell by Rs 4,140 crore to Rs 1,36,279 crore, while SBI lost Rs 3,342 crore to Rs 1,23,807 crore and RIL Rs 3,285 crore to Rs 2,49,829 crore.
NTPC's value diminished by Rs 577 crore to Rs 1,38,482 crore, HDFC Bank lost Rs 224 crore to Rs 1,40,197 crore and HUL's market worth plunged Rs 129 crore to Rs 1,12,002 crore.
In contrast, TCS added Rs 4,756 crore to its m-cap which was Rs 2,63,696 crore, while ITC's value climbed Rs 1,880 crore to Rs 2,09,573 crore.
The top 10 list by m-cap for last week was led by TCS, followed by RIL, ONGC, CIL, ITC, HDFC Bank, NTPC, Infosys, SBI and HUL.
