Stock markets experienced significant turmoil driven by a sell-off in tech stocks amid trade tensions between the US and China, Biden's proposed restrictions on chip exports to China, and concerns over global cyber outages. While major tech companies like Nvidia, Amazon, and Alphabet faced losses, a shift towards small-cap companies indicated a broader-based bull market, with the Russell 2000 outperforming major indices. As investors brace for a tech stock rotation, experts suggest rebalancing portfolios to ensure diversified exposure. Despite the tech turmoil, certain sectors like semiconductors saw varied impacts, with Nvidia leading gains, while financial stocks like JPMorgan Chase and Bank of America dipped, possibly due to interest rate concerns.