Jeremy Grantham: Navigating Bubble-Land

In this FEG interview, Jeremy Grantham reveals how to navigate market bubbles—and why identifying them is just the first step. His rueful admission—”It’s intellectually easy and psychologically disastrously difficult”—captures the pain of being early.

During the late-’90s tech bubble, GMO’s conservative stance cost them clients who “treated us as if we were deliberately trying to stop them getting rich.” The lesson? “In a bull market, [clients] are jumping around full of energy … and you get fired much more quickly.” Markets can defy logic far longer than investors can defy human nature.

Today, Grantham sees a historic trifecta: “For the first time in American history, the real estate market, the bond market, and the stock market” are in bubble territory. Bonds offer “the lowest rates in the history of man,” while U.S. equities are “a contender for the highest priced … in history.”

Even commodities, often a refuge, have surged to all-time highs. Grantham’s warning is blunt: “The higher [bubbles] go, the harder and longer they fall.” Japan’s 1989 twin bubbles in stocks and real estate still haunt him—”31 years later, the land is not back, and stocks are not back.”

So what’s an investor to do? Grantham’s answer is nuanced. While indexing is “as true today as it was then” (a nod to his pioneering work in the 1970s), he cautions that passive strategies force you to “ride out the odd 50% decline,” which can take decades to recover from.

Instead, he favors emerging markets and value stocks, which trade at “one of the two or three lowest relative points in history” compared to the U.S. His broader advice: “Take a little more risk … I wonder how many people sit on their deathbed and say they took too much risk.”

Grantham’s clarity extends beyond finance. His foundation’s mission—investing in green ventures like QuantumScape’s revolutionary batteries—reflects his belief that “this is the only case of having your cake and eat it.”

Climate change, he argues, is the “race of our lives,” demanding urgency. His final counsel, fittingly, is from Keynes: “Chapter 12 of The General Theory is about real life … how the market works.” For Grantham, markets—like the planet—reward those who respect their limits.

You can listen to the entire interview here: