Indian equity indices experienced a severe downturn during the week ending January 9, 2026, marking their worst weekly performance in over three months. The benchmark Nifty 50 and Sensex fell for five consecutive sessions, erasing approximately Rs 13.49 lakh crore in investor wealth. BSE Sensex index slipped 2,185.77 points or 2.54 percent at 83,576.24, while Nifty50 index shed 193.55 points or 2.45 percent at 25,683.30. The BSE Large-cap Index declined 2.5 percent over the week, weighed down by losses in Waaree Energies, IDBI Bank, Trent, Swiggy, and Adani Energy Solutions. On the other hand, stocks such as Solar Industries India, Bharat Electronics, Titan Company, ICICI Bank, Lupin, Divi’s Laboratories, and Union Bank of India ended the week in the green. The BSE Mid-cap Index declined 2.6 percent during the week, weighed down by losses in Premier Energies, Mahindra & Mahindra Financial Services, Jindal Stainless, Suzlon Energy, Hindustan Petroleum Corporation, and Rail Vikas Nigam. Meanwhile, select stocks such as Ipca Laboratories, Emcure Pharmaceuticals, Tata Elxsi, CRISIL, and National Aluminium Company bucked the broader trend to end higher. The BSE Small-cap index declined nearly 4 percent during the week, with heavy selling seen across several stocks. Shares of Systematix Corporate Services, Balu Forge Industries, Worth Investment & Trading, VTM, Kiri Industries, Sai Silks Kalamandir, Indian Metals & Ferro Alloys, Transformers and Rectifiers India, Stallion India Fluorochemicals, Wardwizard Innovations and Mobility, Baazar Style Retail, Elecon Engineering Company, Kitex Garments, Faze Three, and Sandur Manganese and Iron Ores tumbled between 15 and 23 percent. During the week, Reliance Industries lost the most in terms of market value, followed by HDFC Bank, Bharti Airtel, and Larsen & Toubro. On the other hand, ICICI Bank, Titan Company, Bharat Electronics, added most of their market-cap. (Disclaimer: MoneyControl is a part of the Network18 group. Network18 is controlled by Independent Media Trust, of which Reliance Industries is the sole beneficiary.) Sectorally, Nifty Oil & Gas, Nifty Energy, and Nifty Infra indices declined 4–5 percent during the week. Nifty Metal, Realty, Media, and Auto indices also remained under pressure, each slipping more than 2 percent. In contrast, the Nifty Defence index gained 1.3 percent, while the Nifty Consumer Durables index rose 1 percent. Foreign Institutional Investors (FIIs) continued to remain net sellers during the week, offloading equities worth Rs 9,209.90 crore. In contrast, Domestic Institutional Investors (DIIs) provided support to the market, purchasing equities worth Rs 17,594.58 crore. The Indian rupee witnessed a range-bound action during the week as it traded between 89.73 and 90.29. The INR ended almost flat at 90.16 per dollar on January 9, against January 2, closing at 90.19.