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Jeremy Grantham says this is 'the most expensive market in 'American history'

business

According to CNBC, legendary investor Jeremy Grantham says the U.S. stock market has reached historically expensive levels—the priciest valuations in American history. He pins the blame on surging enthusiasm around artificial intelligence. It's a particularly pointed warning from someone known for calling market peaks.

Source: https://www.cnbc.com/2026/06/26/jeremy-grantham-says-this...

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