Between January 20, 2025, and January 20, 2026, Trump posted about 6,200 tweets averaging 18 per day, with 'Great' being his most frequently used word at over 1,400 mentions. Key market-impacting tweets included tariff announcements causing a 10.5% drop in the S&P 500, criticism of the Fed which spiked bond yields, and threats against defense contractors and credit card interest rates that affected stock prices. Additionally, geopolitical moves like proposing to buy Greenland and tariff threats against European countries introduced market uncertainties and pushed US bond yields higher.