Nine of the top-10 most valued firms together lost a whopping Rs 4,74,906.18 crore in market valuation last week, with Reliance Industries and HDFC Bank taking the steepest hit, in line with weak trends in equities. Markets faced heavy drubbing last week amid worsening tensions in the Middle East and foreign fund outflows. In a holiday-shortened week, the BSE benchmark plummeted 3,883.4 points, or 4.53 per cent. The valuation of Reliance Industries declined Rs 1,88,479.36 crore to Rs 18,76,718.24 crore. HDFC Bank's market valuation slumped Rs 72,919.58 crore to Rs 12,64,267.35 crore. Bharti Airtel's valuation plunged Rs 53,800.31 crore to Rs 9,34,104.32 crore and that of ICICI Bank tumbled Rs 47,461.13 crore to Rs 8,73,059.59 crore. The valuation of Life Insurance Corporation of India (LIC) plummeted Rs 33,490.86 crore to Rs 6,14,125.65 crore and that of Hindustan Unilever tanked Rs 27,525.46 crore to Rs 6,69,363.31 crore. The market capitalisation (mcap) of ITC dropped Rs 24,139