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Dragged down by Coal India, the cumulative market valuation of four among the top 10 Indian companies fell by Rs 30,679.66 crore during the past week.
While TCS, RIL, Coal India and HDFC Bank suffered losses in their market valuation, ONGC, ITC, Infosys, SBI, ICICI Bank and Sun Pharma made gains.
The combined gain in market valuation of these six companies stood at Rs 30,195.6 crore.
The m-cap of CIL tumbled by Rs 15,569.84 crore to Rs 2,17,725.08 crore, emerging as the biggest loser among the top-10 firms.
After CIL, TCS took the biggest hit as its market valuation dipped by Rs 6,081.85 crore to Rs 5,04,078.65 crore, while that of RIL plunged by Rs 5,899.34 crore to Rs 3,17,302.18 crore.
HDFC Bank's m-cap fell by Rs 3,128.63 crore to Rs 2,17,105.84 crore.
Among the gainers, Sun Pharma added Rs 9,547.79 crore to Rs 1,84,670 crore in its market cap, while ICICI Bank's valuation jumped Rs 6,963.82 crore to Rs 1,95,093.62 crore.
Infosys' value moved up by Rs 6,732.92 crore to Rs 2,39,381.83 crore, while that of ONGC rose by Rs 3,593.3 crore to Rs 3,50,133.43 crore.
The m-cap of SBI jumped by Rs 3,038.55 crore to Rs 2,04,736.47 crore and that of ITC went up by Rs 319.22 crore to Rs 2,83,833.51 crore.
In the ranking of top-10 firms, TCS stood at number one position, followed by ONGC, RIL, ITC, Infosys, CIL, HDFC Bank, SBI, ICICI Bank and Sun Pharma.
The benchmark BSE Sensex concluded the week at 27,868.63, showing a marginal gain of just 2.8 points.
