ClaimsPeople

Jeremy Grantham

Jeremy Grantham is an investor who co-founded the asset managers GMO and Batterymarch, is listed by GMO as its long-term investment strategist, and co-authored 'The Making of a Permabear'.

1,004 claims collected, 267 researched, 73 resolved. Report of 5 November 2026, method 0.1.0+28da144b.

Scores by kind of claim

Each kind of claim is scored on its own, out of 100: the share that held up, with the range it likely falls in. Fewer resolved claims give a wider range.

  • Factual claims

    Statements about the present or the past, checked against the record: did they hold up?

    72 63 80

    Medium confidence, 42 factual claims resolved. From 15 documents, 2007 to 2025; 15 documents sampled from 32 candidates found.

    Not scored: 53 unresolvable, 28 checkable only against their own records.

    See the factual claims

  • Predictions

    Statements about events outside the person's control, checked once they fell due: did they come true?

    56 46 67

    Medium confidence, 31 predictions resolved. From 10 documents, 2007 to 2023; 15 documents sampled from 32 candidates found.

    Not scored: 93 unresolvable, 1 checkable only against their own records. 17 more fall due later.

    Does not yet allow for how likely each prediction was when made.

    See the predictions

  • Promises

    Commitments to the person's or organisation's own future action, with something to deliver: was it delivered?

    Insufficient record: 0 promises resolved, 5 needed for a score.

    Not scored: 2 unresolvable.

    See the promises

All types combined: 65 (likely 59 to 72, high confidence), from 73 claims: 42 factual claims, 31 predictions. It mixes kinds of claim in different proportions for different people, so compare people kind by kind.

Jeremy Grantham's claims

29 claims

29 claims, sorted by newest said. Choose a claim to read it in full.
VerdictKindSaidClaimTopic
Own records only Factual 2020 Grantham has been spending twice his usual total research time on the interactions between the virus, the economy and markets. Factual · 2020 Their own work or organisation
Own records only Factual 2017 In his early training period Grantham adopted Ben Graham's value-oriented biases. Factual · 2017 Their own work or organisation
Own records only Factual Jan 2016 Grantham's 2011 resources report got many multiples of the hits of a typical GMO quarterly letter. Factual · Jan 2016 Their own work or organisation
Own records only Factual 2016 Over GMO's 28 years of asset allocation, most risk reduction for clients came in the 2000 and 2007 US bubbles, which GMO sidestepped to a considerable degree. Factual · 2016 Their own work or organisation
Own records only Factual 2016 GMO considers a 60-65% equity position what it would hold in a normal world with everything fairly priced. Factual · 2016 Their own work or organisation
Own records only Factual 2016 Most of GMO's extra performance over 28 years came from ranking asset classes more correctly than not. Factual · 2016 Their own work or organisation
Own records only Factual 2016 GMO's Benchmark-Free portfolio carries almost 50% equity or equity-like exposure. Factual · 2016 Their own work or organisation
Own records only Factual 2016 GMO does not expect its strategists or analysts to toe a party line. Factual · 2016 Their own work or organisation
Own records only Factual Apr 2012 In his 1998-1999 survey, over 99% of about 1100 analysts and portfolio managers believed there would be a major bear market, with only 7 voting that the P/E would not go back to 17. Factual · Apr 2012 Economics and markets
Own records only Factual Apr 2012 Grantham said that his firm's not following the crowd in the late-1990s market, when P/E ratios reached 33 times in early 1999, was uncomfortably beyond the tolerance of about 40% of its clients. Factual · Apr 2012 Their own work or organisation
Own records only Factual Apr 2012 In his 1998-1999 survey of about 1100 equity professionals, every respondent agreed that S&P P/E falling from 28-35 to 17 would guarantee a major bear market. Factual · Apr 2012 Economics and markets
Own records only Factual Apr 2012 GMO's asset allocation brainstorming team grew from 4 to 25 members over the five years to April 2012. Factual · Apr 2012 Their own work or organisation
Own records only Factual Apr 2012 GMO's allocation process has always depended on Ben Inker's portfolio management skills, particularly sizing and risk control. Factual · Apr 2012 Their own work or organisation
Own records only Factual Apr 2012 GMO could sign no clients to its benchmark-free allocation approach until 2001. Factual · Apr 2012 Their own work or organisation
Own records only Factual Apr 2012 GMO's estimate of standard client patience time has been 3.0 years in normal conditions. Factual · Apr 2012 Their own work or organisation
Own records only Factual Apr 2012 Grantham said he believes that this strategy, like roughly 90% of GMO's long-only strategies relative to their benchmarks, takes considerably less real risk. Factual · Apr 2012 Their own work or organisation
Own records only Prediction Apr 2011 Several GMO colleagues agree with Jim Chanos that China's structural imbalances will cause at least one wheel to come off its economy within the next 12 months. Prediction · Apr 2011 Economics and markets
Own records only Factual Apr 2011 None of these potential experts came within one billionth of 1% of the actual number, which is approximately 10^57. Factual · Apr 2011 Economics and markets
Own records only Factual Apr 2011 Grantham's foundation is taking a small position, about one-quarter of its eventual target, in resources in the ground and resource efficiency. Factual · Apr 2011 Their own work or organisation
Own records only Factual Jul 2010 In 1985 Grantham's firm was ripped off by its then favorite broker on one of its early program trades. Factual · Jul 2010 Their own work or organisation
Own records only Factual Oct 2009 The response to Grantham's revelation about resource scarcity and denial was nil, the first time since he started writing. Factual · Oct 2009 Their own work or organisation
Own records only Factual Oct 2009 GMO's neutral 65% equity position has been pulled back slightly to 62%. Factual · Oct 2009 Their own work or organisation
Own records only Factual Oct 2009 In March 2009 GMO believed its quality overweight was a winning bet against the market over its seven-year horizon. Factual · Oct 2009 Their own work or organisation
Own records only Factual Oct 2009 GMO reinvested in March 2009 to be almost neutral in equities and recently took a few chips off the table. Factual · Oct 2009 Their own work or organisation
Own records only Factual Oct 2009 GMO's best forecast, for the 10 years ending October 2008, had a 1 in 100,000 chance of being just luck. Factual · Oct 2009 Their own work or organisation
Own records only Factual Oct 2009 GMO has over 70 seven-year forecast estimates since 1994 and every one ranked asset classes better than random. Factual · Oct 2009 Their own work or organisation
Own records only Factual Oct 2009 In equity accounts GMO kept a massive overweight in quality stocks. Factual · Oct 2009 Their own work or organisation
Own records only Factual Apr 2007 Grantham says GMO has not found any case where excellent fundamentals and generous cheap liquidity coexisted without producing a bubble. Factual · Apr 2007 Their own work or organisation
Own records only Factual Apr 2007 As of April 2007, Grantham personally holds a short position in copper. Factual · Apr 2007 Their own work or organisation
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Jeremy Grantham

Open its page

Factual Their own work or organisation

“I have been spending twice my usual total research time on all these new interactions, which for anyone interested in data analysis have presented an amazing challenge.”

Jeremy Grantham, GMO co-founder 2020 1Q 2020 GMO Quarterly Letter (GMO)

Grantham has been spending twice his usual total research time on the interactions between the virus, the economy and markets.

Own records only Only the person's or their organisation's own records speak to it, so it is not scored.

Said for an organisation they lead or work for; it counts on both records.

Reasoning

Grantham's own time spent, an internal count.

Cite this claim

Jeremy Grantham, “Grantham has been spending twice his usual total research time on the interactions between the virus, the economy and markets.” (said 2020). Verdict: own records only. Reliability API, claim c_e9b3fe272285, method 0.1.0+28da144b. https://epistacklabs.com/claims/c_e9b3fe272285

Claims without a verdict

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