When Google first prepared to go public 21 years ago, its founders made an unexpected tribute in their IPO prospectus. Larry Page and Sergey Brin, then still running a rapidly expanding search company, openly credited Warren Buffett as a major intellectual influence. Their letter to prospective investors was titled “An owner’s manual for Google’s shareholders,” and a footnote revealed the inspiration behind the approach: Buffett’s well-known essays in his annual letters to Berkshire Hathaway shareholders.

Two decades later, Buffett has returned the compliment in the most concrete way possible. Berkshire Hathaway disclosed late last week that it now holds a stake in Alphabet valued at roughly $4.3 billion as of the end of the third quarter. This investment positions Alphabet among Berkshire’s ten largest public equity holdings and represents one of the most substantial technology wagers Berkshire has made in recent years. Apple remains Berkshire’s single largest investment, but Alphabet’s addition immediately captured market attention and pushed the stock up 3 percent on Monday.

The move is notable for a firm long regarded as cautious toward fast-growing technology companies. For much of Buffett’s career, Berkshire avoided major commitments in Silicon Valley, uncomfortable with business models that were harder to evaluate using traditional value-investing principles. This stake is also believed to be Berkshire’s first known investment in Google since the company’s founding.

Buffett, now 95, is set to step down as CEO at the end of this year, passing leadership to longtime deputy Greg Abel. The timing adds symbolic weight: even as a leadership transition approaches, Berkshire is signaling an openness to technology investments that previously remained on its periphery.

This decision also echoes Buffett’s own reflections on missed opportunities. In 2017, he publicly admitted that he regretted not buying Google shares years earlier, especially given that Berkshire’s insurance arm, Geico, had been paying substantial sums to advertise on Google’s platform. Buffett has also acknowledged missing Amazon’s rise, a mistake Berkshire partially corrected with a significant Amazon investment in 2019. Today, it still holds more than $2 billion worth of Amazon stock.

Alphabet’s recent performance likely helped make the decision easier. Shares have climbed nearly 50 percent this year and remain just below their record high. The company recently logged its first quarter with revenue exceeding $100 billion, driven largely by the explosive growth of its cloud division. This unit, responsible for much of Alphabet’s artificial intelligence infrastructure and services, has built a backlog of $155 billion in customer commitments. Alphabet has also announced a refreshed generation of chips designed for AI workloads, further distinguishing its offerings from competitors in the field.

Despite these achievements, Alphabet’s valuation still sits below many other AI-driven giants. Based on next year’s projected earnings, Alphabet trades at about 26 times earnings. By comparison, Microsoft sits at 32, Nvidia at 42, and Broadcom at 51. For a value investor like Buffett, that relative discount may have made the opportunity more compelling.

Alphabet’s towering growth has also propelled its founders further up the ranks of global wealth. Page and Brin are currently listed as the seventh- and eighth-richest individuals in the world, according to Forbes, sitting just behind Buffett, who holds the sixth position.

Their respect for Buffett’s philosophy was clear from their IPO documents. In the prospectus, Page and Brin repeatedly referenced the veteran investor’s wisdom. They warned new shareholders that the company would not be guided by short-term market expectations and cautioned that Google’s quarterly earnings might not always appear smooth. Echoing Buffett directly, they wrote that they would not attempt to artificially stabilize results for the sake of appearances. Their intention was to keep management focused on long-term opportunities rather than the fluctuations of Wall Street.

That same long-term mentality shaped Google’s decision to adopt a dual-class share structure before its IPO. The structure concentrated voting power in the hands of Page and Brin, giving them the authority to steer the company without being swayed by short-term investor sentiment. In explaining the rationale, they again cited Buffett and Berkshire Hathaway as examples of organizations that had successfully implemented dual-class structures. They also pointed to major media companies such as The New York Times, The Washington Post, and Dow Jones, arguing that the structure enabled these organizations to prioritize quality journalism despite financial pressures.

The founders wrote that such ownership models helped companies stay committed to long-term goals and core missions even when quarterly results showed volatility. Berkshire’s own use of the structure, they suggested, demonstrated that stable leadership can allow a company to pursue consistent strategy without being pulled off course by the natural ups and downs of financial markets.

In many ways, Berkshire’s newly revealed stake brings the story full circle. More than 20 years ago, Google’s founders were looking to Warren Buffett for guidance on how to build a company with permanence and discipline. Now Buffett, after long expressing regret that he had not invested earlier, has chosen to place Alphabet among Berkshire’s most significant holdings. It’s a symbolic confirmation of the company’s maturity and a reminder that even in the fast-moving world of technology, long-term financial principles still matter.

Buffett’s investment also reflects the shifting landscape of modern tech leadership. Alphabet has established itself not only as a dominant online advertising force but also as a core player in the global AI competition. Its cloud business continues to gain momentum, and its substantial AI-oriented investments—from data center expansion to custom silicon—signal a future where Alphabet is positioned to compete with the world’s largest technology companies on multiple fronts.

While Berkshire’s investment philosophy has traditionally centered on businesses with predictable earnings and strong competitive moats, Alphabet now fits many of those criteria. Its diversified portfolio, entrenched market position, and rapidly expanding AI capabilities make it a compelling long-term play.

For Page and Brin, having Berkshire as a major shareholder marks an extraordinary endorsement. Their early admiration of Buffett’s approach to ownership and governance helped shape Google’s corporate identity. Decades later, Buffett has effectively returned that admiration through investment—a rare moment of philosophical alignment between Silicon Valley innovation and Omaha-style value investing.

As Buffett prepares to hand over leadership of Berkshire, the investment stands as one of his last major moves. And with Alphabet hitting new milestones in revenue, AI expansion, and global influence, the renewed connection between these two forces in American business underscores a simple truth: even the most disciplined investors sometimes find the future too compelling to ignore.