The Indian stock market experienced its worst week since September, with both the BSE Sensex and NSE Nifty declining significantly. This downturn is attributed to fears of impending US tariffs on imports from countries like India, coupled with concerns over foreign portfolio investor (FPI) selling. Investors are also awaiting US jobs data and a Supreme Court verdict on tariffs, which have dashed hopes for an immediate India-US trade deal and could impact the manufacturing sector.