Investment strategist Jeremy Grantham, who's been urging investors to avoid U.S. stocks, sees danger in the "stark contrast" between market enthusiasm and major geopolitical risks.
He has nonetheless come up with some potential choices for those individuals or organizations, notably institutions, that must hold American equities.
The Grantham, Mayo, Van Otterloo & Co. co-founder suggested in a commentary Monday that the artificial intelligence "bubble" will likely at least deflate temporarily at some point, but acknowledged the AI bubble happening within an already existing market bubble is an "unprecedented" development with no direct historical analogy.
Grantham also anticipates an eventual recession.
The current U.S. market valuation, measured by the March 1 Shiller P/E — an inflation-adjusted ratio found by dividing stock price by average earnings for the past decade — has hit the top 1% historically at 34, Grantham explained. Total profits are near record highs as well, he added, noting there's never been a sustained U.S. market rally from a 34 Shiller P/E.
"Remember, if margins and multiples are both at record levels at the same time, it really is double counting and double jeopardy — for waiting somewhere in the future is another July 1982 or March 2009 with simultaneous record low multiples and badly depressed margins," he warned.
Addressing the nature of AI and market bubbles, Grantham said the 2021 pandemic bubble appeared to be bursting conventionally the next year when ChatGPT entered the picture in late 2022.
AI, he wrote, "seems likely to be every bit as powerful and world-changing as the internet, and quite possibly much more so."
Every technological revolution has come with early massive hype and a stock market bubble, and often becomes as transformative as imagined "but only after a substantial period of disappointment during which the initial bubble bursts," Grantham noted.
"So it is likely to be with the current AI bubble. But a new bubble within a bubble like this, even one limited to a handful of stocks, is totally unprecedented, so looking at history books may have its limits," he added.
Grantham expects "a more normal ending" to the original stock bubble when the AI bubble deflates, and called it likely that the interest rate-hike aftermath and "ridiculous" speculation in 2020-2021 and today "will eventually end in a recession."
Grantham noted GMO has a soft spot for Japan, "where we are optimistic that they can continue their recent slow-but-steady improvements in their version of corporate capitalism" and expect the yen eventually to gain significantly against the dollar.
Non-U.S. stocks have more room to run than U.S. counterparts, with less risk when the bubble bursts, he wrote.