New Delhi: Four of the 10 most valued domestic companies together witnessed an erosion of 84,432.8 crore in market capitalisation last week, with HDFC twins taking the biggest hit.

RIL and SBI were the other frontline companies that suffered a drop in their market capitalisation (m-cap) for the week ended Friday, while Tata Consultancy Services (TCS), HUL, Infosys, ITC, Kotak Mahindra Bank and ICICI Bank finished with gains. However, the cumulative gain of these firms at 22,058.3 crore was less than the total loss suffered by the four companies.

The m-cap of HDFC Bank plunged 26,900.6 crore to 6,22,401.90 crore, making it the top loser among the top-10 firms.

It was followed by HDFC, whose valuation tumbled 23,360.6 crore to 3,74,131.53 crore.

Reliance Industries Limited (RIL) lost 22,123.4 crore in m-cap to stand at 7,69,627.33 crore, while SBI's valuation dropped 12,048.2 crore to 3,05,667.95 crore.

In contrast, the market cap of TCS jumped 11,951.35 crore to 7,91,302.89 crore and that of ICICI Bank zoomed 3,484.66 crore to 2,68,125.39 crore.

ITC added 2,487.11 crore to its valuation to reach 3,31,749.04 crore and Kotak Mahindra Bank gained 2,138.61 crore to 2,88,522.40 crore.

The valuation of Hindustan Unilever Limited (HUL) climbed by 1,266.41 crore to 3,74,651.29 crore and that of Infosys rose 730.16 crore to 3,38,148.69 crore.

In the ranking of top-10 firms, TCS closed the week with number one ranking, followed by RIL, HDFC Bank, HUL, HDFC, Infosys, ITC, SBI, Kotak Mahindra Bank and ICICI Bank.

TCS on Thursday went past Reliance Industries Limited to become the country's most valued firm by market valuation yet again.

During the last week, the Sensex lost 454.22 points or 1.18% to close at 37,882.79 on Friday.

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