Berkshire Hathaway has made a significant investment in Alphabet, the parent company of Google, amid ongoing concerns on Wall Street about a potential bubble in the artificial intelligence sector. In a regulatory filing disclosed late Friday, Warren Buffett’s conglomerate revealed it acquired 17.8 million shares of Alphabet during the third quarter, a move that added approximately $4.3 billion to Berkshire’s portfolio by the end of September. Following the announcement, Alphabet’s stock experienced a notable 4% increase in after-hours trading.
This investment represents the largest single stock addition for Berkshire in the last quarter and is part of a broader strategy that also included shares from companies such as Chubb, Domino’s Pizza, Sirius XM, and Lennar. Interestingly, Berkshire chose to maintain its existing position in Amazon, another key player in the AI space.
The acquisition of Alphabet aligns with a larger trend of growth and investment in the technology sector, particularly in AI. Despite recent stock market fluctuations attributed to AI speculation, Alphabet’s shares have surged by 46% this year, reflecting the ongoing robust demand and confidence in the tech giant.
Berkshire has been eyeing Alphabet for some time. In 2019, the late Charlie Munger, Buffett’s longtime partner, expressed regret over not identifying the company’s potential sooner, indicating that both he and Buffett recognized the importance of Google’s role in the digital economy. Today, Alphabet stands alongside other tech titans such as Amazon, Meta Platforms, and Microsoft, all of which are heavily investing in AI, pouring hundreds of billions of dollars annually into infrastructure and development.
According to Morgan Stanley, the collective spending of AI hyperscalers is poised to reach approximately $3 trillion by 2028. However, this aggressive financial commitment has raised apprehensions on Wall Street regarding the ability of these firms to convert substantial investments into lasting revenue and profitability.
As Buffett approaches his departure from his role as CEO of Berkshire by the end of this year, the decision to acquire Alphabet has sparked questions about future leadership directions. It’s unclear if Buffett, his successor Greg Abel, or another top executive initiated the Alphabet purchase. In a recent letter, Buffett hinted at a quieter approach, announcing he would no longer write Berkshire’s annual report or participate in extensive discussions at the company’s annual meetings.
This shift occurs as Berkshire Hathaway maintains a cautious stance towards the stock market and acquisitions, evidenced by a rising cash reserve that has reached record levels. Notably, Buffett’s investment portfolio has seen a decline overall, marking three consecutive years of net selling. The most recent divestments include further reductions in Berkshire’s stake in Apple, a trend that has persisted for over a year.

