Nvidia Corp.’s $3 trillion run-up in market value in the two years since ChatGPT helped trigger an AI frenzy is bigger than any stock rally in history in such a short time span. But the landscape is now changing for the chipmaker.

Drops for Nvidia and other superstar stocks are dragging U.S. indexes lower and keeping Wall Street stuck in its weekslong rut. The S&P 500 fell 0.8% early Monday. The index is coming off its fourth losing week in the last five.

President Biden's chip export restrictions plan claims to safeguard national security but both Nvidia and EU disagree.

Nvidia pushed back on the Biden administration's new executive order relating to overseas sales of advanced AI chips, saying it will undermine U.S. technological leadership.

Global data centers are filling up with GPUs and Nvidia has so far claimed an estimated 90% of that market share. Highly complex chips like GPUs are largely manufactured in Taiwan, but most of the companies that design them are based in the US and so their products are within the Department of Commerce's jurisdiction.