Free US stock sector relative performance and leadership analysis to identify market themes and trends. Our sector analysis helps you understand which parts of the market are leading and lagging the broader index. Greg Abel, who succeeded Warren Buffett as Berkshire Hathaway’s CEO, made significant portfolio moves in his first quarter at the helm. According to a recently filed Form 13F, Abel fully exited 16 positions while substantially increasing the conglomerate’s stake in Alphabet, elevating the AI giant to a top-five holding in Berkshire’s portfolio.
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- Major portfolio cleanup: Abel exited 16 positions entirely during the first quarter, removing several longtime holdings from Berkshire’s equity book. The precise names of the sold stocks were not disclosed in the source, but the scale suggests a significant portfolio refresh.
- Alphabet ascends to top-five: The increased stake in Alphabet reflects a strong conviction in the long-term potential of AI and digital advertising. Alphabet now ranks among Berkshire’s largest stock positions, alongside its traditional heavyweights such as Apple, Bank of America, and Coca-Cola.
- Abel’s first definitive move: As the successor to Buffett, Abel’s actions are being closely watched by investors and analysts. The aggressive buying of an AI titan and trimming of dozens of other holdings indicates a more active management style and a willingness to pivot toward high-growth sectors.
- Continuity at the board level: Buffett remains chairman, providing a degree of oversight and continuity. However, the portfolio changes suggest Abel is exercising his authority to shape Berkshire’s investment strategy in his own image.
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Key Highlights
Big changes are under way at Berkshire Hathaway (NYSE: BRK.A, BRK.B). Following Warren Buffett’s retirement as CEO on December 31, 2025, his longtime understudy Greg Abel assumed day-to-day control of the conglomerate and its massive investment portfolio. Buffett remains chairman of the board, but Abel now has the final say on operations and investment decisions.
A Form 13F filing made public in mid-May revealed that Abel’s first full quarter in charge was a busy one. The filing, which covers U.S.-listed equity holdings as of the end of the first quarter of 2026, showed that Abel completely sold out of 16 stocks. At the same time, he poured capital into Alphabet (NASDAQ: GOOGL, GOOG), the parent company of Google and a leading player in artificial intelligence. This move pushed Alphabet into Berkshire’s top-five holdings by reported value.
The portfolio overhaul signals a notable shift in strategy under Abel’s leadership. While Buffett was known for favoring consumer staples, financials, and energy stocks, Abel appears to be leaning into technology and AI, sectors that had historically been underrepresented in Berkshire’s portfolio.
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Expert Insights
The portfolio moves under Abel highlight a potential strategic evolution at Berkshire Hathaway. Under Buffett, the conglomerate was often cautious about technology stocks, famously avoiding the dot-com bubble and only later embracing Apple. Abel’s decision to make Alphabet a top-five holding could suggest a more proactive approach to capitalizing on emerging trends like artificial intelligence.
Investors may view this as a positive signal, as Alphabet brings both a mature advertising business and significant AI R&D capabilities through Google DeepMind and Google Cloud. However, it also introduces valuation risk and sector concentration, as tech stocks tend to be more volatile than Berkshire’s traditional holdings.
The exit of 16 positions indicates a portfolio streamlining process. Abel may be consolidating Berkshire’s equity book around fewer, higher-conviction ideas—a move that could reduce administrative complexity and sharpen the portfolio’s thematic focus.
While it is too early to declare a new era for Berkshire Hathaway, these initial actions under Abel suggest a manager unafraid to make bold changes. Long-term followers of the company should monitor upcoming quarterly filings to see if this trend continues, potentially reshaping Berkshire’s identity as a technology-oriented investment vehicle.
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