U.S. stock futures fell, with the S&P 500 indicating a drop of over 1%, driven by a significant global selloff in semiconductor stocks. [2, 3, 5, 6] Investors are showing concerns over stretched valuations and the sustainability of high spending in the artificial intelligence sector. [2] This tech-led downturn follows losses in Asian and European markets, signaling broad risk-off sentiment. [3, 5] Heightened geopolitical tensions in the Middle East are also contributing to market unease. [2, 5]