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Index Funds

Passive investment vehicles that Buffett recommends for non-professional investors.

🌱 Idea Evolution & Maturity

How this concept developed over time, tracking its transformation from an early practice to a formalized Berkshire pillar.

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1
Seed Stage

Early Recognition

1980 - 1992
Strategic Catalyst
The consistent underperformance of active money managers relative to the S&P 500.
Operational Shift

Buffett begins noting that the 'frictional costs' of active management guarantee that the average investor will underperform the average result.

Philosophical Shift

The realization that 'helpers' (brokers, managers) extract value rather than create it for the average person.

A hyperactive stock market is the pickpocket of enterprise.

1983 Letter
2
Named Stage

The Ultimate Recommendation

1993 - 2007
Strategic Catalyst
The 1993 Letter explicitly recommending index funds for the know-nothing investor.
Operational Shift

Buffett publicly and repeatedly advises that the best investment for 99% of people is a low-cost S&P 500 index fund.

Philosophical Shift

If you cannot identify your circle of competence, you must buy a cross-section of American business and minimize fees.

By periodically investing in an index fund, the know-nothing investor can actually out-perform most investment professionals.

1993 Letter
3
Defined Stage

The Protégé Bet

2008 - 2017
Strategic Catalyst
Buffett's famous $1 million bet against Protégé Partners (hedge funds).
Operational Shift

Buffett mathematically and practically proves that a Vanguard S&P 500 index fund will beat a basket of hedge funds over a decade due to the '2-and-20' fee structure.

Philosophical Shift

The absolute triumph of Jack Bogle's low-cost indexing over high-IQ active management.

When trillions of dollars are managed by Wall Streeters charging high fees, it will usually be the managers who reap outsized profits, not the clients.

2016 Letter
4
Mature Stage

The Trust Directive

2018 - Present
Strategic Catalyst
Buffett revealing his will for his wife's inheritance.
Operational Shift

Buffett reveals that 90% of the money left to his wife will be placed in a very low-cost S&P 500 index fund.

Philosophical Shift

Index funds are the ultimate expression of the 'American Tailwind'. Never bet against America.

My advice to the trustee could not be more simple: Put 10% of the cash in short-term government bonds and 90% in a very low-cost S&P 500 index fund.

2013 Letter

📚 Historical Mentions & Citations (3)

Click a reference document below to expand and read the exact paragraph(s) containing this concept in the archive.

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1999 MeetingExcerpt Available
But I would think that it might get to be the case that, if you simply shorted the companies that got added to the S&P after the S&P effect had been felt, that that might — you might find that those stocks would tend to underperform, as that one artificial buy order, in effect, its impact wore off. So, I think something is going to happen. I think indexation has far exceeded what anybody anticipated, including S&P or including me or Charlie. And I think there’s been a good reason for it to develop. I think as it continues to develop it will have more and more impact on the market in ways that, probably, S&P is not that excited about, nor would the index funds be excited about. So, there’s likely to come a solution to the liquidity problem that might be particularly acute at Berkshire, but that prevails throughout the market, that occurs when stocks are added. And I would think if they adopt some solution, that certainly, if they adopt a solution of gradual weighting, that Berkshire would be a very logical candidate for the S&P. It really makes no difference to us what is done along that line. We would not unhappy being in the S&P, as long as it didn’t have some huge market impact at the moment of putting it in. On the other hand, you know, we love the owners we’ve got. And I don’t see how we could improve on this group much by having the index funds. So, it — we’ll see what happens on it. It is not a big deal to us. And we want to be sure if we’re ever added, it isn’t too big a deal to the market. Because I would not like — you know, the people who sold that day, might like it — but I would not like the stock to jump up, you know, $20,000 a share on one day because there’s some market order for 100,000 shares, and then gradually work its way back down to where it should’ve been in the first place. No one benefits from that except the people who sell in the very short-term. And that is not the group that I primarily worry about. Charlie?
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2013 LetterReference Only

Mentioned in this document.

🎙️
2013 MeetingReference Only

Mentioned in this document.