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

Jeremy Grantham says soaring valuations around AI makes the U.S. stock market historically expensive.

# Jeremy Grantham says this is the most expensive market in 'American history' Jeremy Grantham says soaring valuations around AI makes the U.S. stock market historically expensive. **Read the full article:** [CNBC](https://www.cnbc.com/2026/06/26/jeremy-grantham-says-this-is-the-most-expensive-market-in-american-history.html) *This article was originally published by CNBC. MoneyWiseInc provides expert curation of the best financial content from trusted sources.*