President Trump’s tariff mania is rewriting the investing playbook.

The recent fluctuations in the financial markets can be directly linked to President Trump's unpredictable tariff policies, leaving investors, both casual and professional, recalibrating their long-standing strategies. In a remarkable sequence of events, a false social media post sparked a massive rally in the S&P 500 that saw a stunning 7% spike in just eight minutes. This momentary euphoria, however, quickly dissipated as stocks began to tumble again by Thursday, with Treasury yields simultaneously shooting up amid growing fears of a financial crisis. Analysts like Ed Al-Hussainy from Columbia Threadneedle have observed a fundamental shift in the mindset of investors. Despite the S&P 500 rebounding more than 5% last week, there’s an undercurrent of anxiety as global confidence in American assets is shaken. A key concern is how these tariffs are reshaping the typical safe-haven appeal of U.S. Treasury bonds, which has long been a comforting notion for investors. The simultaneous sell-off of stocks, bonds, and the U.S. dollar signals a troubling trend resembling that of emerging markets, casting doubt on the U.S.’s once-enviable economic status. “What it seems like is foreigners, in particular, reassessing how much US exposure they want to have,” said John Pease of GMO, emphasizing the shift away from U.S. assets. The traditional investment strategy of a 60% stocks and 40% bonds portfolio, once a reliable approach, is now under scrutiny as inflation concerns loom large and uncertainties in global trade policy unsettle markets. Market participants are responding with caution—many are openly re-evaluating their investments as profits dwindle and trade wars escalate. The prevailing view among many experts points toward a period of heightened volatility, suggesting that investors might need to find their growth elsewhere without relying solely on U.S. equities or bonds.