Signs of the new AI boom are suddenly everywhere again.

AI stocks are soaring again this year as recent results from companies like Nvidia (NASDAQ: NVDA) and Super Micro Computer have blown past analyst estimates as cloud infrastructure companies and AI start-ups dramatically ramp up spending on AI hardware. The fervor for AI stocks has gotten so heated that even stocks that Nvidia has invested in, like Soundhound AI, have surged when the news of Nvidia’s stake broke.

Those soaring stock prices have led some to fear that an AI bubble is forming. Wharton professor Jeremy Siegel said that a speculative bubble could be starting in stocks like Nvidia, and other respected investors like Jeremy Grantham and Jeffery Gundlach have made similar proclamations.

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Source Fool.com