While TCS, CIL, HDFC Bank, SBI, ICICI Bank and HDFC logged losses in their market capitalisation (M-Cap), ITC and Infosys made gains.
The market valuation of ONGC plunged Rs 22,201.5 crore to Rs 3,38,754.63 crore, becoming the top loser among the top-10 firms.
RIL's m-cap tumbled Rs 20,996.48 crore to Rs 3,12,603.49 crore, while that of SBI tanked Rs 20,717.4 crore to Rs 1,80,786.41 crore.
The valuation of CIL dropped Rs 19,959.71 crore to Rs 2,28,936.63 crore, ICICI Bank (Rs 12,347.48 crore to Rs 1,56,713.46 crore) and HDFC Bank (Rs 10,545.57 crore to Rs 1,95,637.50 crore).
HDFC's market cap fell by Rs 2,915.1 crore to Rs 1,55,244.90 crore and TCS lost Rs 2,311.3 crore to Rs 4,69,702.97 crore.
On the other hand, the m-cap of ITC surged Rs 10,260.37 crore to Rs 2,75,401.06 crore and Infosys gained Rs 4,975.75 crore to Rs 1,90,979.46 crore.
The list of top-10 companies was topped by TCS, followed by ONGC, RIL, ITC, CIL, HDFC Bank, Infosys, SBI, ICICI Bank and HDFC.
In the past week, the BSE barometer Sensex has slumped 937.71 points, or 3.61 per cent.