New Delhi, July 26 -- The combined market valuation of nine of the top-10 most valued firms eroded by Rs 2.74 trillion last week.

HDFC Bank took the biggest hit. The market valuation of HDFC Bank tumbled Rs 1,18,383.91 crore to reach Rs 11,43,985.90 crore.

From the top-10 pack, Hindustan Unilever emerged as the only winner while those facing erosion from their valuation were Reliance Industries, Bharti Airtel, HDFC Bank, ICICI Bank, State Bank of India, Tata Consultancy Services (TCS), Bajaj Finance, Life Insurance Corporation of India (LIC) and Larsen & Toubro.

The valuation of State Bank of India tanked Rs 26,814.94 crore to Rs 9,36,953.84 crore and that of ICICI Bank diminished by Rs 6,223.84 crore to Rs 10,28,217.93 crore.

The marke...