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Jeremy Grantham: AI Market Bubble Warning

January 19, 2026 Victoria Sterling Business
News Context
At a glance
  • Jeremy Grantham, the co-founder of asset manager GMO, believes the current⁤ enthusiasm surrounding artificial intelligence resembles a market bubble.
  • He recently discussed his concerns in an interview on the Merryn Talks Money podcast with ⁤host Merryn somerset Webb.
  • Throughout his career, Grantham has consistently taken a contrarian approach to ‍investing.
Original source: bloomberg.com

veteran Investor jeremy Grantham Warns of AI Bubble

Jeremy Grantham, the co-founder of asset manager GMO, believes the current⁤ enthusiasm surrounding artificial intelligence resembles a market bubble. Grantham has a decades-long track ⁢record of correctly identifying and warning about impending market⁤ crashes, including those involving Japanese equities in the late 1980s, U.S. tech stocks in 2000, and⁢ the housing market before the ​2008 financial crisis.

He recently discussed his concerns in an interview on the Merryn Talks Money podcast with ⁤host Merryn somerset Webb. Grantham ⁢argues that the rapid rise in AI-related stock valuations isn’t supported by underlying fundamentals.

Throughout his career, Grantham has consistently taken a contrarian approach to ‍investing. He founded GMO in 1977, and the firm manages billions in assets. His warnings often precede meaningful ⁢market corrections, earning him a reputation as​ a keen observer of market excesses.

Past Predictions:

  • Late 1980s: Correctly predicted the decline of Japanese equities.
  • 2000: Warned of the bursting of the ‌dot-com bubble in U.S. tech stocks.
  • Pre-2008: Foresaw the collapse of the housing market and subsequent financial crisis.

Sources say Grantham’s analysis focuses⁣ on price-to-earnings ratios and ⁤other valuation metrics,​ which he believes are currently stretched to unsustainable levels in⁤ the AI sector. A number of analysts are ⁤now beginning to echo his concerns,though‌ the overall market remains optimistic about AI’s potential.

Major investment firms are pouring ⁤capital into AI-related companies, driving up‌ valuations.However, Grantham ⁣cautions that these investments may not yield the returns investors are expecting.

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