British investor whose Boston firm managed $118 billion in 2015 and $65 billion in 2020; started one of the first index funds and criticised responses to the 2008 crisis.
GMOGrantham Foundation for the Protection of the Environment
Wrote no book, but his GMO quarterly letters are the most widely read running commentary on asset bubbles and mean reversion, and he extended that framework to climate and resource scarcity.
20 letters · 7 articles
| Valuing AI: Extreme Bubble, New Golden Era - or Both? | Jeremy Grantham and Edward Chancellor test whether AI is a two-sigma bubble or a paradigm shift, measured against over 300 historical bubbles across asset classes. | 2026 | ||
| Rising Toxicity and the Threat to Capitalism and Life Itself | Jeremy Grantham argues that toxicity from untested chemicals is this century's most underrecognised threat, driving a fertility crisis and harming health. | 2025 | ||
| The Great Paradox of the U.S. Market | Jeremy Grantham argues U.S. stock prices, at a Shiller P/E of 34 in the top 1% of history, price in perfection while the world is imperfect and dangerous. | 2024 | ||
| Sustainability or Bust: The Sheer Impossibility of Eternal Compound Growth | Jeremy Grantham argues compound growth cannot last forever as workforces shrink, resources grow scarcer and climate damage escalates. | 2024 | ||
| After a Timeout, Back to the Meat Grinder | Jeremy Grantham says the first leg of the bubble's bursting is over, with speculative growth stocks crushed, and expects further losses. | 2023 | ||
| Let the Wild Rumpus Begin | Jeremy Grantham argues the U.S. is in its fourth superbubble, after 1929, 2000 and Japan in 1989, and that superbubbles correct back to trend with great pain. | 2022 | ||
| Putin's Invasion Reminds Us That We Live in a Finite World | Jeremy Grantham argues Russia's invasion of Ukraine shows a finite world, where decarbonisation needs scarce commodities and the war adds pressure on raw materials. | 2022 | ||
| Entering the Superbubble's Final Act | Jeremy Grantham argues the U.S. superbubble has entered its final act, comparing it with the Nifty Fifty, 1929, 2000 and 2006. | 2022 | ||
| Waiting for the Last Dance | Jeremy Grantham argues the bull market since 2009 has become an epic bubble, alongside the South Sea bubble, 1929 and 2000, and warns asset allocators. | 2021 | ||
| Waiting for the Last Dance (revised, September 2021) | Jeremy Grantham's revised September 2021 version of Waiting for the Last Dance calls the U.S. market an epic bubble featuring frenzied issuance and speculation. | 3 2021 | ||
| Chemical Toxicity and the Baby Bust | Jeremy Grantham argues chemical toxicity is a neglected cause of falling fertility and a threat to chemical companies. | 2020 | ||
| Covid-19, Climate Change, and the Need for a New Marshall Plan | Jeremy Grantham urges a new Marshall Plan for climate infrastructure, arguing low growth, inequality and negative real rates make 2020 the time for it. | 2020 | ||
| Bracing Yourself for a Possible Near-Term Melt-Up | Jeremy Grantham, a value investor, warns in January 2018 of a possible near-term melt-up, as the U.S. market shows signs of a classic bubble's final phase. | 2018 | ||
| This Time Seems Very, Very Different / The US Market Will Revert | Jeremy Grantham clarifies that he expects the U.S. market to revert toward its old means, but very slowly, after journalists misquoted him. | 2017 | ||
| The Race of Our Lives | Jeremy Grantham argues the global economy, reckless with resources, shows signs of failure that brought down past civilisations, in a race against time. | 2013 | ||
| My Sister's Pension Assets and Agency Problems | Jeremy Grantham argues career risk drives professional investors to protect their jobs rather than clients' money, using his sister's pension as an example. | 2012 | ||
| Time to Wake Up: Days of Abundant Resources and Falling Prices Are Over Forever (1Q 2011) | Jeremy Grantham argues the days of abundant resources and falling commodity prices are over forever, and investors must change their thinking. | 1 2011 | ||
| Summer Essays (GMO Quarterly Letter, 2Q 2010) | Jeremy Grantham's summer 2010 essays cover GMO's portfolio outlook, finance going rogue, a fearful speculative market and global warming. | 2 2010 | ||
| Reinvesting When Terrified | Jeremy Grantham urges investors in March 2009 to reinvest when terrified, as painful as it was to sell in 1999. | 2009 | ||
| It's Everywhere, In Everything (GMO Quarterly Letter, 4Q 2007) | Jeremy Grantham calls the boom in everything from Indian antiquities to junk bonds the first truly global bubble. | 4 2007 |
| Let The Wild Rumpus Begin | GMO Viewpoints | 2022 |
| Entering the Superbubble's Final Act | GMO Viewpoints | 2022 |
| Waiting for the Last Dance | GMO Viewpoints | 2021 |
| The Race of Our Lives Revisited | GMO White Paper | 2018 |
| The Race of Our Lives | GMO Quarterly Letter | 2013 |
| Be persuasive. Be brave. Be arrested (if necessary) | Nature | 2012 |
| Time to Wake Up: Days of Abundant Resources and Falling Prices Are Over Forever | GMO Quarterly Letter | 2011 |
| Legendary investor says the AI boom masks a deeper crisis Paywall | Fortune | 2026 |