Market capitalisation of the top ten listed companies fell by ₹1.55 lakh crore in a single week, with HDFC Bank and Bajaj Finance recording the largest losses. The combined valuation of eight of the most valuable firms dropped ₹1.55 lakh crore last week, while Tata Consultancy Services and Larsen & Toubro ended the period with gains. The decline reflects a broader slide in equity valuations across the market.

In a holiday‑truncated week, the 30‑share BSE Sensex fell 1,605.44 points, a 2.15% decline, while the 50‑share NSE Nifty slumped 546.15 points, a 2.36% drop. The weak trend in equities was mirrored by a fall in total market capitalisation of BSE‑listed firms, which fell ₹20,78,774.28 crore over four sessions to ₹4,51,83,393.14 crore from ₹4,72,62,167.42 crore recorded on 16 October.

Among the major losers, HDFC Bank’s market valuation tumbled ₹55,506.95 crore to ₹10,67,121.12 crore, with its stock falling 5% during the last week. Bajaj Finance’s valuation eroded ₹34,180.51 crore to ₹5,77,146.21 crore. Reliance Industries dropped ₹27,065.08 crore to ₹16,10,372.11 crore, and Life Insurance Corporation of India fell ₹21,062.24 crore to ₹4,81,142.58 crore. Bharti Airtel’s market capitalisation fell ₹9,360.75 crore to ₹11,79,454.70 crore, while State Bank of India diminished ₹4,338.46 crore to ₹8,83,384.38 crore.

In contrast, Tata Consultancy Services’ market capitalisation rose ₹23,517.56 crore to ₹9,14,652.52 crore, while Larsen & Toubro climbed ₹1,788.66 crore to ₹5,01,513.72 crore. Infosys’ valuation declined ₹2,881.38 crore to ₹4,68,528.03 crore, and ICICI Bank fell ₹1,276.53 crore to ₹10,01,594.91 crore. The top‑valued firm remained Reliance Industries, followed by Bharti Airtel, HDFC Bank, ICICI Bank, TCS, State Bank of India, Bajaj Finance, L&T, LIC and Infosys.

The market capitalisation of the top ten companies, ranked by value, placed Reliance Industries first, Bharti Airtel second, HDFC Bank third, ICICI Bank fourth, Tata Consultancy Services fifth, State Bank of India sixth, Bajaj Finance seventh, Larsen & Toubro eighth, Life Insurance Corporation of India ninth and Infosys tenth. The article notes that it is purely informational and not investment advice, urging readers to consult a financial advisor before making decisions.