The value of California chip designer Nvidia plummeted by billions following new trade restrictions imposed by Donald Trump, causing significant turmoil in the semiconductor sector. As a result, US stock markets saw a sharp decline, with the S&P 500 index dropping approximately 1.3%, the tech-heavy Nasdaq index falling 2.1%, and the Dow Jones decreasing by 0.6% in early trading. This sell-off rattled investors and highlighted the vulnerability of the technology sector to regulatory changes.