Domestic investors in India were seen profit-booking after a seven-day winning streak, leading to a significant drop in the sensex by 729 points and the Nifty by 189 points. Market analysts are pointing to the upcoming US tariff announcements and sectoral impacts, particularly in the pharmaceutical and information technology sectors, as the primary reasons for this decline. Despite foreign investors showing signs of net buying, the market stability was still affected. The sensex and Nifty are closely watched by investors and traders in India as key indicators of the stock market performance.