The Iran conflict has upended a favored investment strategy as global funds reverse their "Sell America, Buy Asia" rotation. Asian stocks have plummeted 6% this week compared to the S&P 500's minimal 0.1% decline, marking a significant shift toward US assets as investors seek havens amid geopolitical uncertainty.

Asian markets face disproportionate pressure due to their reliance on oil shipments through the Strait of Hormuz. China, Japan, South Korea, and Taiwan—major oil importers with limited buffers—bear the brunt of supply shock concerns. The surge in Brent crude threatens to turn regional strengths in AI hardware and export industries into vulnerabilities.

The stronger dollar and pricing in tighter monetary policy for Asian central banks reflect this recalibration. Foreign investors dumped $6.3 billion of Taiwanese stocks this week alone. Despite recent outperformance, Asian markets remain vulnerable to further unwinding of crowded positions as geopolitical risks compound existing vulnerabilities.