Berkshire's Q1 portfolio shifts: Buffett's principles, Abel's playbook

Key points:

• Berkshire’s Q1 2026 13F showed a more active and focused portfolio, with a major increase in Alphabet, new exposure to Delta Air Lines, and exits from several large names including Amazon, UnitedHealth, Visa and Mastercard.

• The early Abel playbook does not look like a rejection of Buffett’s principles. It looks more like an update: value investing applied to a market where technology platforms now carry the cash flow, scale and moat characteristics that old-economy franchises once dominated.

• For investors, the message is not to copy the filing. It is to understand the signal: Big Tech is becoming core market infrastructure, but the next phase of the AI trade will likely reward selectivity, cash-flow discipline and valuation awareness.

Key Berkshire changes in Q1 2026

Berkshire Hathaway’s latest 13F was especially closely watched because it was the first major quarterly filing under Greg Abel’s leadership. Berkshire remains Berkshire: concentrated, patient and cash-flow focused. But the latest reshuffle also suggests that the portfolio may be adapting to a market where technology is no longer just a growth sector — it is part of the economy’s operating system.

Additions and increases

Complete exits: biggest names first

Berkshire’s full exits were broad, but the largest ones deserve the most attention. The exit from Visa and Mastercard stands out because both have historically been viewed as high-quality compounders. The exit from UnitedHealth adds to the sense of portfolio clean-up, while Amazon is smaller in dollar terms but symbolically important given the shift toward Alphabet.

Reductions, not exits

These trims are also important, but they should be read differently from the full exits. Chevron was the biggest reduction by value, but it remained a major Berkshire holding. Constellation Brands was nearly eliminated, but not fully exited.

The headline is not that Berkshire has suddenly become a technology fund. Apple, American Express, Coca-Cola, Bank of America and Chevron still matter deeply to the portfolio. But the Alphabet move is hard to ignore. It suggests Berkshire may now be more comfortable treating some mega-cap technology companies as modern value stocks: dominant, cash-rich, highly profitable and strategically embedded in the global economy.

The new Abel playbook: Buffett principles, updated for an AI economy

The risk with every Berkshire 13F is overinterpretation. The filing does not tell us which individual manager made each decision, why a position was changed, or whether the position still exists today. But the scale and direction of the Q1 changes still offer a useful lens.

This does not look like a clean break from Buffett. It looks more like an evolution of the Berkshire toolkit.

1. Value investing is moving where the cash flows are

For decades, classic value investing was associated with banks, consumer staples, insurance, railroads, energy and industrial businesses. But the market has changed. Some of the strongest balance sheets and most durable cash flows now sit inside mega-cap technology.

Alphabet, Microsoft, Apple and other platform companies are not just “growth stocks” anymore. They have recurring revenues, global scale, high margins, enormous cash generation and the ability to fund major investment cycles internally. That gives them some defensive qualities even when valuations look demanding.

The Abel-era message may be this: value is not defined by sector. It is defined by durability of cash flows, competitive advantage and price paid.

2. Big Tech is becoming defensive growth

The latest 13Fs across major investors point to a broader shift. Big Tech is increasingly being treated not only as a source of growth, but also as a form of balance-sheet quality in an uncertain macro environment.

This matters because investors are dealing with higher yields, geopolitical shocks, inflation risks and uneven growth. In that environment, companies with net cash, pricing power, recurring revenues and high returns on capital naturally become more attractive.

That does not mean Big Tech is risk-free. It means the strongest names are now being used by investors as a blend of growth exposure and quality exposure.

3. AI exposure is becoming more selective

The AI trade is not over, but it is maturing.

The market is moving away from simply rewarding any company with an AI narrative. Investors are becoming more focused on the difference between AI spend, AI revenue and AI margins.

That is why the split across major investors matters. Some are adding Alphabet. Some are adding Microsoft. Others are rotating between the same mega-cap names. The message is that the AI theme remains powerful, but the winners may become more stock-specific.

Investors may need to ask:

• Who is spending heavily on AI?

• Who can monetise AI through existing customer relationships?

• Who has the balance sheet to fund the capex cycle?

• Who is already priced for perfection?

• Where is the market still underestimating long-term cash flow?

4. Portfolio concentration is rising, but retail investors should be careful

Berkshire’s portfolio became more focused in Q1. That fits a wider market pattern: many leading investors are concentrating around fewer, higher-conviction franchises.

But this is not a signal for everyday investors to run concentrated portfolios blindly. Berkshire has permanent capital, deep research resources and the ability to absorb volatility that most investors do not.

The more useful lesson is that diversification should not mean owning everything equally. In a market driven by earnings dispersion, quality dispersion and AI dispersion, investors may want to be more thoughtful about what each holding is doing in the portfolio.

What it means for investors

1. Do not copy 13Fs blindly

13Fs are useful, but they are backward-looking. They show what large investors owned at quarter-end, not necessarily what they own today. They also do not show the full portfolio picture, including shorts, derivatives or non-U.S. holdings.

The value of 13Fs is not in copying trades. It is in understanding how sophisticated investors are thinking about themes, valuation and risk.

2. The definition of “value” is changing

The Berkshire-Alphabet move is a reminder that value investing does not have to mean avoiding technology. In today’s market, some of the best cash-flow machines are technology platforms.

The important distinction is between buying technology because it is fashionable and buying technology because the business model is durable. Berkshire’s move looks closer to the second category.

3. Big Tech remains central, but selectivity is rising

The latest filings reinforce that mega-cap technology remains a core part of institutional portfolios. But they also show rotation within the group.

That means investors should avoid treating Big Tech as one single trade. Alphabet, Microsoft, Apple, Amazon, Meta and Nvidia all sit inside the technology ecosystem, but their risk drivers are different: advertising, cloud, devices, enterprise software, AI infrastructure, chips, capex and regulation.

The next phase of the AI trade may be less about owning the broad story and more about identifying where AI investment converts into revenue, margin resilience and free cash flow.

4. Quality matters more when yields are high

Higher bond yields raise the bar for equities. That makes companies with weak balance sheets, distant profits or uncertain cash flows more vulnerable.

This is why many large investors remain drawn to businesses with pricing power, scale and high returns on capital. In a world where the cost of capital is no longer zero, quality is not a luxury. It is a risk-management tool.

5. The old economy has not disappeared

Berkshire still owns large positions in financials, consumer franchises and energy. The Delta purchase and Chevron trim also show that the portfolio is not simply rotating into technology.

The better interpretation is that Berkshire is building a portfolio that spans both old and new economy cash flows. That may be an important lesson for investors: AI can be a core theme, but it does not remove the need for diversification across sectors, economic cycles and risk drivers.

Bottom line

The latest 13F season sends a clear message: even the most valuation-conscious investors are making room for mega-cap technology when the business quality is strong enough.

Berkshire’s larger Alphabet stake is not necessarily a call to chase AI. It is a signal that the line between value and growth has blurred. In the Abel era, Berkshire may still be following the same discipline — buy durable businesses at sensible prices — but the opportunity set now includes digital platforms that Buffett’s earlier playbook never fully embraced.

For investors, the takeaway is simple: Big Tech remains important, AI still has structural legs, but selectivity is becoming crucial. The winners in the next phase may not be those with the loudest AI story, but those that can turn AI spending into durable cash flow.