The Indian stock market is set to open lower on April 13, 2026, following weak global market sentiments primarily due to geopolitical tensions arising from a U.S. naval blockade on Iranian ports. The Nifty index is projected to start around 23,700, nearly 340 points below its previous close. On April 10, the Sensex surged by 919 points (1.20%) to reach 77,550.25, while the Nifty 50 rose by 276 points (1.16%) to end at 24,050.60. Key stocks to watch include Mahindra & Mahindra, which reported strong production and sales figures for March 2026, and Adani Green Energy, which saw a 35% year-on-year increase in operational capacity to 19.3 GW. Larsen & Toubro has signed an agreement to acquire a 100% stake in International Green Scapes, while Muthoot Finance declared an interim dividend of ₹30 per equity share (300%) for FY2025–26. Other notable mentions include Lupin, AstraZeneca, and Enviro Infra Engineers, each making significant moves in their respective sectors.