Berkshire’s equity exposure is tightly focused, with five stocks making up 63% of its $355B portfolio

Berkshire Hathaway’s stock portfolio is increasingly concentrated in a small set of positions, according to an analysis published August 7, 2026, that points to how much of the conglomerate’s roughly $355 billion equity portfolio is tied to only five companies.

The five largest holdings identified in the report account for $222.3 billion of Berkshire’s portfolio value, representing 63% of the total. The concentration spans consumer brands, financial services, technology and communication-related businesses.

Apple is the largest of the five by portfolio value in the analysis, followed by American Express, Coca-Cola, Bank of America and Alphabet. Taken together, the group forms the core of Berkshire’s public equity exposure, with the rest of the portfolio allocated across smaller positions.

The figures suggest that Berkshire’s investment approach, at least as reflected in its biggest listed holdings, is less about broad diversification across dozens of stocks and more about leaning into a handful of companies that remain central to its long-term thesis.

Concentration can be a source of strength when the core holdings perform, because gains in those positions can drive a disproportionate share of portfolio returns. But it also increases sensitivity to company-specific outcomes such as product demand, credit cycles for lenders, advertising or consumer spending trends, and technology or platform competition.

Berkshire’s visible focus on these five large public equities also makes its market performance harder to interpret as purely a “macro” bet. Even when market conditions change, the direction and magnitude of Berkshire’s results would be expected to hinge heavily on how these specific businesses fare rather than on broad index-like diversification.

The analysis does not provide granular detail in the published summary about how the allocation has changed over time, the cost basis of each position, or whether any of these stakes were increased or trimmed recently. It also does not specify whether the $355 billion figure refers strictly to equity investments reported in a particular accounting category or to an expanded view that includes other publicly traded exposures.

For investors and analysts following Berkshire Hathaway, the practical takeaway is the scale of the holdings that matter most. When a portfolio is 63% concentrated in five names, even modest relative moves in those companies can have a large impact on how Berkshire’s public-market portfolio behaves.

Next, market watchers will likely look for updates on Berkshire’s ongoing buying and selling patterns, including whether management continues to add to these top positions or shifts capital toward other holdings. The key question for future performance will be whether the concentration remains stable or whether Berkshire gradually diversifies the portfolio beyond its current core.