Since the AI boom reached its peak at the end of February, American AI concept stocks have almost remained stagnant in the past six weeks. Entering April, the Nasdaq also showed signs of being stagnant, with an overall decline so far this month. As the "most important stock on Earth", Nvidia's dominant position is not without risks, and the "blue ocean" that Nvidia previously explored seems to have the potential to become the "red ocean". After a year of over 200% revenue growth, Nvidia's data center business currently accounts for more than three-quarters of the company's overall revenue. Although Nvidia cannot maintain such growth levels forever, Wall Street generally expects revenue to remain strong in the coming years. As the driving force of artificial intelligence engines weakens, the market is also full of disagreements about the future of the US stock market.