AI stocks are probably in a bubble — but might be worth holding onto, says Citadel’s Ken Griffin AI stocks are probably in a bubble — but might be worth holding onto, says Citadel’s Ken Griffin Markets are starting to scrutinize AI, and that’s a good thing, says Griffin Citadel founder and CEO Ken Griffin says even if AI stocks are in bubble, they might be worth holding onto. There’s a bubble in artificial-intelligence stocks — but it’s no reason to sell, one of the leading figures in finance said Tuesday night. And any radical transformation of our economy is generally intertwined with a bubble,” said Ken Griffin at an annual conference run by Citadel Securities, the market maker he mostly owns.
Griffin also is the majority owner of Citadel LLC, the hedge-fund giant. Copyright ©2026 MarketWatch, Inc. All Rights Reserved. 87990cbe856818d5eddac44c7b1cdeb8 Why SpaceX’s stock is surging —and lifting the broader AI universe along with it ‘I don’t feel sorry for myself’: I’m 64 and will be renting for the rest of my life.
Walmart takes aim at Amazon and Costco with new membership program — but is it a good deal? Bull markets tend to peak with a whimper, not a bang — but a 15% correction for the S&P 500 may be next Barbara Kollmeyer is based in Madrid, where she leads MarketWatch's premarket coverage of financial markets and writes the Need to Know column. She has worked in London and Los Angeles for MarketWatch previously.
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