The Trump Market: A Daily Dose of “What Now?”

Market Reactions to Trade Policies - In early October 2025, President Trump's threat of "massive" new tariffs on Chinese goods led to significant market declines, with the S&P 500 dropping 2.71%, the Dow Jones Industrial Average down 1.90%, and the Nasdaq 100 falling 3.49% [2] - A subsequent post on Truth Social by Trump on October 13 reassured investors, resulting in a market rebound where the Dow surged over 500 points, the S&P 500 gained 1.24%, and the Nasdaq climbed 1.54% [3] - On October 17, Trump's comments about tariffs being "not sustainable" and a meeting with Chinese President Xi Jinping prompted a modest rebound in U.S. stock indices, with the Dow advancing 0.2% and the Nasdaq recovering from earlier losses [4] Pharmaceutical Industry Developments - President Trump announced a deal with Merck KGaA on October 17 to reduce the prices of IVF drugs by 84%, which is expected to save families around $2,200 per IVF cycle, while also providing Merck with tariff reprieves and expedited drug reviews [5] - Conversely, Trump's announcement regarding the potential price drop of the weight-loss drug Ozempic to $150 from around $1,000 led to a sharp decline in shares for Novo Nordisk, which fell as much as 6%, and similar declines for Eli Lilly and other competitors [6][7] - Analysts expressed skepticism about Trump's price target for Ozempic, labeling it as "aggressive posturing" and noting that insured patients already pay significantly less [8] Impact of Social Media on Market Sentiment - Trump's posts on Truth Social have become a barometer of market sentiment, with the stock of Digital World Acquisition Corp. (DWAC) experiencing a 67.18% decline year-to-date, hitting a 52-week low of $7.57 [9] - Despite optimistic forecasts for DWAC, the reality has been a downward trajectory, with predictions of further declines [9] Overall Market Dynamics - The market's reaction to Trump's policies is characterized by rapid fluctuations, with significant drops and rebounds driven by tariff rhetoric and casual comments on drug prices [10] - Investors are in a state of constant alertness, adapting to the unpredictability of Trump's announcements and the resulting market impacts [10]