Since Trump's return to the White House, U.S. market volatility has reached unprecedented levels, according to a BlockBeats report. Fundstrat data reveals that since January 2025, the five largest daily gains and losses in the U.S. stock market have been directly influenced by Trump's policies. This marks the first time in nearly 40 years that a single president has so significantly impacted market volatility.The market rally has been largely driven by technical rebounds following policy shocks. Without the five strongest up days, the S&P 500 would have declined by 2.7% since Trump's inauguration, rather than rising 18.5%. The volatility is primarily linked to tariff policy shocks, with Trump's frequent policy shifts and real-time social media signals prompting traders to focus on predicting his intentions, thereby undermining traditional macroeconomic frameworks.