There's something beautifully poetic about Warren Buffett's latest win. The man who spent decades publicly lamenting his decision to skip Google's IPO just watched his Berkshire Hathaway (BRK.A) (BRK.B) stake in Alphabet Inc. (GOOGL) (GOOG) appreciate by more than $1.6 billion in under a year.

Talk about redemption arcs.

Welcome to the $4 Trillion Club

On Monday, Alphabet crossed into rarefied air, hitting a $4 trillion market cap and joining the ultra-exclusive club that includes Nvidia, Microsoft, and Apple Inc. (AAPL). The surge past $335 per share came courtesy of two catalysts: the runaway success of Alphabet's Gemini 3 AI models and a blockbuster agreement to power the next generation of Apple's Siri.

For Berkshire, which quietly disclosed its $4.3 billion entry in Q2 2025, the timing looks almost suspiciously perfect. By the end of Q3, the Alphabet position had climbed to become the fund's 10th-largest holding, representing 1.6% of the entire investment portfolio.

Closing the Loop on a Famous Regret

This investment isn't just profitable. It's symbolic. Buffett, famously allergic to technology stocks for most of his career, spent years explaining how he blew it on Google. He'd seen the company's "zero-marginal-cost" advertising machine up close through GEICO's ad spending, yet still walked away from the IPO.

It became one of his most cited regrets.

Now, by scooping up 17.8 million shares just as Alphabet doubled down on its AI transformation, Buffett has demonstrated that classic value investing principles still work in the age of hyperscalers. You just have to be patient enough to wait for the right entry point.

What This Means for the Abel Era

As Buffett transitions from CEO to Chairman, with Greg Abel taking the reins, this Google bet signals something bigger. Berkshire is evolving. For years, Apple dominated the tech allocation. Now, there's a deliberate move toward diversification within AI, spreading risk and opportunity across multiple platforms.

Buffett caught Alphabet's late-stage value explosion at exactly the right moment, and he's handing Abel a portfolio that's positioned for whatever comes next. Not a bad way to seal a legacy.