Sensex crashes over 650 points, investors lose ₹3 lakh crore; why is the stock market down today? by Live mint | February 5, 2026 3:06 pm | Indian Stocks, Market, News The Sensex crashed over 650 points to hit an intraday low of 83,151.62, while the Nifty 50 fell below 25,600 during the session.