Sensex crashes over 750 points in 2 days; Nifty 50 drops below 25,450— Why is the Indian stock market down? Explained by Live mint | January 20, 2026 12:13 pm | Indian Stocks, Market, News In two consecutive sessions, the 30-share pack Sensex has declined over 750 points, or nearly 1%, while the Nifty 50, too, has dropped by a per cent.