"Genetically programmed": Buffett's 2006 specification for a great investor

Published: February 28, 2007 — Berkshire Hathaway 2006 Chairman's Letter

In October 2006, Warren Buffett walked into a Berkshire Hathaway board meeting with one item on the agenda that he considered unresolved. The CEO succession question had an answer: the board had identified three outstanding internal candidates, all considerably younger than Buffett, and he was comfortable that the directors knew exactly who would take over if he died that night. 1

The investment side was different. Lou Simpson — CEO of GEICO's investment operations since 1979 and the closest thing Berkshire had to a designated backup CIO — was 70 years old, only six years younger than Buffett. A long-term solution he was not. Berkshire was, in Buffett's own assessment, less prepared on the investment side than on the operating side. 1

The board's plan, formed at that October meeting: Buffett would hire a younger person — possibly several, as part of a competitive selection process — with the ability to eventually manage a very large portfolio. What makes the 2006 letter worth reading in full is not the plan itself. It is the specification Buffett wrote down for what that person must be.

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Berkshire Hathaway 2006 Chairman's Letter

Warren Buffett's annual letter to shareholders, published February 28, 2007. Covers succession planning, ISCAR, the Equitas deal, newspaper industry decline, and an extended section on what Berkshire looks for in a chief investment officer.

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What Buffett actually requires

The passage in the 2006 letter where Buffett describes the CIO criteria is one of the most direct statements he has made about what separates adequate investors from great ones. He begins with the obvious — track record and intellect — and then turns to what he considers more essential:

"We therefore need someone genetically programmed to recognize and avoid serious risks, including those never before encountered. Certain perils that lurk in investment strategies cannot be spotted by use of the models commonly employed today by financial institutions." 1

He continues:

"Independent thinking, emotional stability, and a keen understanding of both human and institutional behavior is vital to long-term investment success. I've seen a lot of very smart people who have lacked these virtues." 1

Consider what Buffett is saying in those two sentences. He is not describing someone who is smarter than other investors. He is describing someone who is wired differently — whose recognition of risk does not depend on having seen that specific risk before, and whose judgment does not erode under the emotional pressure that affects most professionals.

The phrase "genetically programmed" is deliberate and precise. It acknowledges that the required trait may not be fully teachable. You can train a person to build DCF models, study accounting, read 10-Ks efficiently. You cannot, or not reliably, train a person to recognize a risk that has never appeared in the data they've analyzed. The latter requires a kind of structural pattern-matching — an alertness to second-order consequences and unusual combinations — that some people have and many do not.

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Berkshire Hathaway 2006 Chairman's Letter — CIO succession criteria

Pages 19–21 of the 2006 letter contain Buffett's full description of the succession planning process and the explicit criteria he intends to apply in selecting a chief investment officer.

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Why smart isn't sufficient

The critique embedded in "I've seen a lot of very smart people who have lacked these virtues" deserves unpacking, because it runs counter to how most people in finance think about selection.

The standard hiring criteria for an investment role — strong academic record, prior returns, analytical rigor — selects primarily for intelligence and work ethic. Those are real and necessary. But Buffett identifies a gap in that selection process, and it has a structural cause.

The core problem is temporal. In most investment strategies, especially those involving complex instruments or long-duration securities, the cost of a pricing mistake does not appear immediately. A manager who misprices a bond, takes excessive leverage, or misreads a business's competitive position may not see the consequence for months or years. That gap creates an environment where a very smart person can convince themselves, repeatedly, that their position is sound — because the evidence of the mistake hasn't arrived yet.

This is precisely the dynamic Buffett flagged when he wrote that the relevant risks "cannot be spotted by use of the models commonly employed today by financial institutions." Quantitative risk models, by construction, require historical data. A risk that has never materialized before has no representation in a historical dataset. The models will assign it low probability or no probability, and a smart person calibrated to trust models will follow them.

The emotional stability criterion guards against a related failure mode. Intelligent analysts who lack stability tend toward one of two destructive patterns under pressure: they double down on losing positions because their analytical confidence exceeds their risk tolerance, or they capitulate near market lows because the emotional weight of being wrong overtakes their judgment. Neither error is a failure of intellect. Both are failures of temperament.

Lou Simpson, Buffett notes, earned very large sums under a pay-for-sustained-overperformance arrangement at GEICO — and never left for more lucrative alternatives, despite clear opportunities. 1 That behavioral choice, which Buffett highlights as a form of evidence, says something about the absence of acquisitiveness that can cloud judgment. It is the kind of negative evidence — what someone didn't do when they could have — that doesn't show up on a résumé but tells you something important about how they process incentives under pressure.

The retention paradox

Buffett raised a structural complication that any organization hiring an exceptional investor must face: the act of hiring them raises their market value. Being a named portfolio manager at Berkshire Hathaway is a credential that commands substantially more in the open market than it would elsewhere. Whoever Buffett hired would, within a few years of the hire, be worth considerably more to other employers. 1

This matters because it defines the selection problem more precisely. Buffett is not simply looking for someone who satisfies his criteria at the time of hiring. He is looking for someone who satisfies those criteria and is not primarily motivated by maximizing their own compensation — because the person who is will be gone within a few years, as soon as a better offer appears.

This is not a trivial constraint. In a competitive market for investment talent, the people with the temperament Buffett is describing — genuinely independent, emotionally stable, not driven by short-term incentive structures — tend to be exactly the people who also have the track record to command high fees elsewhere. The Venn diagram of "satisfies Buffett's CIO criteria" and "can be retained at Berkshire's compensation levels" is smaller than either circle alone.

The Simpson arrangement — where compensation was explicitly tied to sustained long-term outperformance rather than short-term assets under management — was Buffett's partial answer to this problem. But Simpson was an unusual case: someone recruited in 1979 on an unconventional deal structure, at a time when Berkshire's profile was lower and the alternatives were fewer. Replicating that in 2006, for a known and well-compensated role, was a harder problem.

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Berkshire Hathaway 2006 Chairman's Letter — Lou Simpson and the succession problem

Buffett's description of Lou Simpson's role, the CIO retention challenge, and the plan to hire multiple candidates for an eventual succession, in the 2006 Chairman's Letter.

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What this means for investors evaluating investment professionals

The 2006 CIO specification is not only a description of what Berkshire needed. It is a diagnostic framework that any long-term investor can use when evaluating the people who manage their capital.

Most of the information available about an investment manager — track record, AUM, Sharpe ratio, press coverage — tells you about performance in environments that have already occurred. It tells you almost nothing about the criteria Buffett considered most important: whether the person is equipped to recognize a risk they have never seen before, and whether their judgment holds under conditions that would destabilize a normal professional.

Three observable proxies, derived from Buffett's criteria, are worth applying:

Portfolio behavior during sharp drawdowns. Did the manager reduce risk methodically or erratically? Did they communicate clearly to clients, or did they go quiet? A manager who panics, over-communicates fear, or makes large directional bets at market lows is exhibiting the temperament instability Buffett is describing. A manager who held their framework and sized positions deliberately is showing something more durable.

Position concentration over time. Managers under performance pressure tend toward index-hugging — adding positions to reduce tracking error, which also reduces accountability. A manager who has maintained genuinely concentrated positions across multiple market environments has demonstrated the independence Buffett values. One who concentrates only in easy markets is showing a different trait entirely.

Whether they have ever described a mistake in full. This is the hardest one to observe, but the most informative. A fund manager who has publicly or in writing described a specific investment error — not in the generic "we learned from it" register, but with the actual sequence of reasoning, where the error entered the process, and what they changed — is demonstrating the intellectual honesty and non-defensive orientation that underpins emotional stability. That quality is rare. Its absence is common, and its absence predicts the failure modes Buffett is trying to screen out.

The succession process that Buffett initiated in October 2006 took years to resolve: two portfolio managers — Todd Combs and Ted Weschler — were eventually hired, and Greg Abel was later designated as Buffett's eventual replacement as CEO. What the 2006 letter documents is the thinking that preceded all of that — the moment when Buffett wrote out, precisely, what he was actually looking for. That specification has not aged.

Cover image: AI-generated illustration

参考ソース

1Berkshire Hathaway 2006 Chairman's Letter