Greg Abel doubles down on AI: Apple, Alphabet now 30% of Berkshire's $351B portfolio

When Greg Abel took over as Berkshire Hathaway's CEO in 2026, he inherited Warren Buffett's five-decade investment legacy and immediately began reshaping the portfolio to reflect his own convictions. The most striking change has been a dramatic concentration in two technology and artificial intelligence stocks: Apple and Alphabet, which together now represent roughly 30% of Berkshire's $351 billion（約56兆円） equity portfolio as of July 14.

Abel's most aggressive move has been on Alphabet. During the first quarter of 2026, Berkshire nearly tripled its existing position in the internet giant, elevating it into the ranks of the portfolio's largest holdings. That action was followed by a $10 billion（約1.6兆円） commitment through a private placement as part of Alphabet's broader $80 billion（約13兆円） equity raise—$5 billion（約8000億円） allocated to Class A shares and $5 billion（約8000億円） to Class C shares. This sequence of moves reflects what the article describes as "strong conviction in Alphabet's long-term growth prospects." The company's moat is substantial: Google maintains a near-monopoly in search, generating predictable, high-margin advertising revenue and consistent cash flow. Beyond search, Alphabet has diversified into YouTube, Google Cloud Platform, and consumer electronics, providing multiple revenue avenues across economic cycles. The company also operates a modest dividend program, adding shareholder value while preserving financial flexibility for reinvestment in AI.

Meanwhile, Berkshire has continued to hold Apple as its largest single position, despite trimming the stake over the previous couple of years. Apple trades at a forward price-to-earnings ratio around 36, reflecting its strength as a consumer brand and ecosystem platform. The company's tight integration of hardware, software, and services creates switching costs and recurring revenue; it generates enormous profits and free cash flow, much of which flows back to investors through share repurchases. The article highlights one often-overlooked dimension: Apple's role as a "platform toll collector for AI." Developers building for iOS must navigate Apple's App Store and payment systems, creating a durable revenue channel independent of which AI models dominate. Looking ahead, Apple has optionality to expand into AI-enhanced devices and services, aligning with Berkshire's affinity for adaptable businesses with multiyear growth runways.

In parallel, Berkshire exited its positions in Amazon and Domino's Pizza during the first quarter, signaling selective pruning even as the company strengthened its core holdings. Abel's willingness to concentrate capital in Apple and Alphabet—both of which trade at premium valuations—reflects what the article frames as "prudent capital allocation rather than momentum-driven decisions." Both companies possess what Berkshire seeks: durable competitive moats, exceptional cash generation, quality management teams oriented toward long-term value creation, and reasonable valuations relative to their growth potential in a market environment where many technology and AI-related names carry stretched valuations driven by speculative enthusiasm. Abel's first year as CEO thus demonstrates continuity with Buffett's investment philosophy while signaling a deliberate pivot toward the artificial intelligence landscape through two of its most established and defensible participants.

Greg Abel's assumption of the CEO role at Berkshire Hathaway marks the end of Warren Buffett's five-decade tenure and the beginning of a new investment strategy that, while rooted in Buffett's core principles, shows Abel's own conviction in artificial intelligence as a long-term opportunity. The concentration of nearly 30% of Berkshire's $351 billion（約56兆円） portfolio in Apple and Alphabet is striking precisely because it breaks from Berkshire's historical caution toward volatile technology stocks. However, the article frames this not as a departure from Buffett's philosophy but as an extension of it—applied to what Abel views as exceptional businesses with durable competitive advantages rather than speculative AI plays.

Alphabet's appeal under Abel's leadership appears rooted in its dominance in search advertising, its diversification into YouTube, Google Cloud Platform, and consumer electronics, and its scale as a platform capable of monetizing AI capabilities across multiple revenue streams. The speed and scale of Abel's purchases—tripling the position in Q1 and then committing $10 billion（約1.6兆円） to the company's $80 billion（約13兆円） equity raise—suggest a level of conviction that goes beyond passive reallocation. Apple's retention as the portfolio's largest holding, despite Berkshire's multi-year trim of the position, signals Abel's belief in the company's ecosystem lock-in, cash generation, and optionality in AI-enhanced devices and services. Both positions reflect a valuation discipline: the article argues that Apple's ~36× forward P/E and Alphabet's ~25× forward P/E are justified by their business quality relative to the broader market's stretched valuations driven by speculative enthusiasm.

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