Tech, semiconductor stocks bounce on tariff optimism, Nvidia jumps 7%

1. Nvidia led the Magnificent Seven, rallying 7% amid tariff negotiation optimism. 2. Technology stocks rebounded after volatility, with highest trading volume in 20 years. 3. Chipmakers excluded from tariffs but still face demand concerns and economic slowdown. 4. Broadcom announced a $10 billion share buyback, boosting market sentiment. 5. Tech sector lost $1.8 trillion in market value over prior turbulent trading sessions.