Blog
Warren Buffett does not believe in diversification — at least not for himself. Berkshire Hathaway's public equity portfolio is one of the most concentrated portfolios at any major investment firm. The top five holdings often represent 70% or more of the equity portfolio. Here is the structure visualized.
Approximate weights based on recent 13F filings:
| Stock | Ticker | Approx % of equity portfolio | Held since |
|---|---|---|---|
| Apple | AAPL | ~40-45% | 2016 |
| Bank of America | BAC | ~10-12% | 2011 |
| American Express | AXP | ~8-10% | 1991 |
| Coca-Cola | KO | ~7-9% | 1988 |
| Chevron | CVX | ~5-7% | 2020 |
| Occidental Petroleum | OXY | ~4-6% | 2022 |
| Kraft Heinz | KHC | ~4-5% | 2015 |
| Other (50+ positions) | — | ~15-20% | varies |
These percentages move with stock prices and quarterly buys/sells. The exact numbers change but the concentrated structure remains. Apple alone has been roughly 40% of the portfolio for years.
Enter your holdings and see your portfolio as a pie chart.
Open Portfolio Visualizer →Buffett's approach to portfolio construction is the opposite of what most academic finance teaches:
This is the contradiction Buffett openly admits: his concentrated stock-picking approach is NOT what he recommends for individual investors. In his 2013 letter to shareholders, he wrote that his estate plan instructs the trustee to invest his wife's inheritance in:
That is a Bogleheads-style index portfolio. Not a copy of Berkshire's holdings.
Why the difference? Because Buffett knows that his performance depends on advantages most investors do not have: decades of pattern recognition, an analytical team, the ability to make influential investments, and the discipline to hold through 50% drawdowns without flinching.
Enter your holdings and see your portfolio as a pie chart.
Open Portfolio Visualizer →Even if you should not copy it directly, the structure teaches some lessons:
If you wanted a Buffett-inspired portfolio without copying his exact holdings, you could build something like:
| Holding | Ticker | % | Reason |
|---|---|---|---|
| Berkshire Hathaway | BRK.B | 20% | Buffett picks for you |
| S&P 500 | VOO | 40% | Buffett-recommended core |
| Quality dividend stocks | SCHD | 15% | Quality factor tilt |
| International stocks | VXUS | 15% | Diversification |
| Cash / short Treasuries | BIL | 10% | Buffett-style optionality |
This is a balanced, mostly-passive portfolio with a tilt toward quality and a modest allocation to Berkshire itself. It is NOT a clone of the public 13F holdings — it is a portfolio you could actually hold and sleep through.
If you wanted to literally mirror Buffett's stock picks, you would face a structural problem: 13F filings are released 45 days after quarter-end. By the time you see Berkshire bought a stock, the price has often moved significantly. You are buying at a different cost basis than Buffett.
This is true of all "guru tracking" strategies. The information is stale by the time you can act on it.
Buffett has had years where Berkshire's concentration backfired:
Concentration cuts both ways. The same approach that produced exceptional returns over 60 years has also produced dramatic underperformance in specific decades. Buffett can wait it out. Most individual investors cannot.
Use the portfolio visualizer to enter Berkshire's top holdings as the pie chart. You will see what 40% in one stock looks like as a slice — it dominates the pie. Compare that to your own portfolio (which probably has 20-50 holdings) and you will see why Buffett's approach is so different.
For most people, the lesson is to be inspired by Buffett's discipline and quality focus while sticking to the index funds Buffett himself recommends for his family.