India's BSE Sensex closed about 0.9% down at 84,181 on Thursday, the lowest since November 11 and marking the fourth straight session of losses. Broad-based selling swept across sectors as investors contended with the potential impact of rising tariffs on India’s export-driven industries. US President Donald Trump has greenlit legislation authorizing tariffs as high as 500% on countries that import Russian petroleum products. Geopolitical risks, continued foreign outflows and ongoing mixed corporate earnings also weighed on market sentiment. Foreign investors have offloaded shares worth $900 million so far in January, following record sales worth $19 billion in 2025. IT and metal stocks were among the worst hit sectors, while oil and gas stocks remained under pressure. TCS (-2.9%), Tech Mahindra (-2.9%), L&T (-2.9%), Reliance Industries (-2.3%) and Tata Steel (-2.2%) posted the biggest losses. In contrast, Eternal, ICICI Bank, Bajaj Finance, and BEL were the only gainers.