Stock market today: Dow, S&P 500, Nasdaq bounce after 3-day slide, but end week lower

Market Performance - US stocks gained on Friday, with the Dow Jones Industrial Average and the S&P 500 rising approximately 0.6%, while the Nasdaq Composite climbed 0.4% [1] - The gains followed three consecutive days of losses for major US indexes, although all three ended the week lower by less than 1% [2] Economic Indicators - August's Personal Consumption Expenditures (PCE) index showed a year-over-year increase of 2.9% and a month-over-month increase of 0.2%, aligning with economists' expectations [3] - The University of Michigan's consumer sentiment survey indicated that Americans were more pessimistic about the US economy than anticipated in September [2] Trade Policies - President Trump announced a potential 100% tariff on imports of branded drugs for pharmaceutical companies not building manufacturing plants in the US, causing shares of drugmakers in Europe and Asia to decline [4] - New tariffs on imports of heavy trucks and certain furniture categories will take effect on October 1, adding uncertainty to markets already concerned about the sustainability of the AI boom and the risk of a US government shutdown [5] Corporate Developments - Trump approved a deal to spin off TikTok's US operations from China's ByteDance, with a proposed price of $14 billion, which was viewed as undervaluing the company, estimated to be worth $40 billion [6]