Mumbai: Seven of the top-10 Sensex companies together lost 30,098 crore in market valuations last week, with state-run energy major ONGC alone taking the steepest hit of 11,080 crore.

ITC, SBI and HDFC Bank, however, saw rise in their market capitalisation (m-cap), totalling 10,552 crore, in an otherwise sluggish stock market where the BSE 30-stock index, Sensex, saw a mild gain of 0.05 percent during the past week.

The m-cap of ONGC plunged 11,080 crore to 2,39,895 crore, while Coal India lost 7,864 crore to 2,27,041 crore.

Reliance Industries Ltd saw its value plummet 4,271 crore to 2,70,716 crore; Infosys lost 3,482 crore to 1,45,510 crore and TCS's value fell by 1,820 crore to 2,53,264 crore.

Besides, ICICI Bank's m-cap slipped 922 crore to 1,21,899 crore and NTPC lost 659 crore to 1,38,400 crore.

On the other hand, FMCG major ITC's value surged 8,040 crore to 2,13,294 crore, while SBI added 1,698 crore taking its m-cap to 1,50,173 crore and HDFC Bank's market worth moved up by 814 crore to 1,48,258 crore.

Of the top-10 companies, RIL was at the No 1 spot, followed by TCS, ONGC, CIL, ITC, SBI, HDFC Bank, Infosys, NTPC and ICICI Bank.