The stock market faces significant losses with the Sensex plunging 830 points and the Nifty slipping below 23,900. Key stocks dragging the Nifty down include Britannia Industries, HDFC Bank, NTPC, Asian Paints, and Bharat Electronics, while Trent, HCL Technologies, Sun Pharma, Infosys, and Reliance Industries see gains. Barring Information Technology and Realty, all other sectors are down, with auto, banking, FMCG, power, telecom, media, and pharma losing between 0.4% and 2%. BSE Midcap and Smallcap indices also dropped by 0.5%, reflecting a market-wide downturn.