Berkshire’s Big Bet and a Record Yen Bond: Alphabet’s Two-Pronged Strategy to Fund Its AI Ascent

Warren Buffett's firm nearly triples Alphabet stake to $17B, while Alphabet issues record yen bond to fund $180B+ AI infrastructure; stock up 132% in 12 months.

Berkshire Hathaway has never been a natural-born tech bull, so when it nearly triples its stake in Alphabet, the market takes notice. The Warren Buffett vehicle now holds roughly 58 million shares, worth around $17 billion at current prices, up from 17.8 million at the end of the prior quarter. Under incoming CEO Greg Abel, the conglomerate is shifting more weight toward digital platforms — a vote of confidence in Google’s advertising machine, its cloud business, and the earnings power underpinning its artificial intelligence push.

That optimistic signal was quickly tempered by a very different kind of move. On May 15, Alphabet tapped the Japanese bond market for 576.5 billion yen, or roughly $3.6 billion, in what stands as the largest yen-denominated bond sale from a foreign corporation. The top-tier credit ratings from Moody’s and S&P smoothed the placement. This wasn’t about a cash crunch; it was about funding breadth. With capital spending on data centers and high-performance chips surging, Alphabet is spreading its borrowing across geographies to finance the next wave of AI infrastructure.

The price tag for that buildout is staggering. Management has lifted its investment plan for 2026 to between $180 billion and $190 billion, with much of the spending earmarked for computing capacity behind Gemini and Google Cloud. The completion of the Intersect acquisition in March added to the capital needs. Meanwhile, free cash flow is feeling the strain from this infrastructure cycle. Alphabet halted its share buybacks in the first quarter of 2026 — a year earlier it was plowing more than $15 billion into repurchases — choosing instead to funnel capital directly into AI capabilities.

None of that has stopped the stock from climbing. On Friday, Alphabet shares closed at €341.45 in European trading, a dip of 0.91 percent, but still hugging their recent peak. That came a day after hitting a new all-time high of €344.60. Over the past 30 days the stock has added 19.47 percent, and since the start of the year it has surged 26.89 percent. The 12-month return stands at a whopping 132.88 percent. The market is clearly pricing in both core strength and an AI payoff — even as the investment sums become eye-watering.

The next big test arrives on May 19, when Google I/O kicks off at 10 a.m. Pacific time. Bank of America analyst Justin Post, who rates Alphabet a buy with a $430 target, expects a broad roll-out of new AI products and features. The spotlight will be on Gemini, with anticipated advances in reasoning, coding, multimodal processing, and long-context windows. Cheaper, faster flash models could also get an airing. Another theme is agentic AI — systems that handle tasks like booking reservations, managing calendars, or completing shopping carts more autonomously. The key question is how deeply Google integrates these capabilities into Chrome, Gmail, Maps, Search, and Android.

Oppenheimer’s Jason Helfstein raised his price target to $445, citing higher estimates for Google Cloud Platform. The broader analyst consensus sits at $426.44, implying roughly 7 percent upside from current levels. That optimism has a a specific trigger: Alphabet’s first-quarter earnings delivered earnings per share of $5.11 on revenue of $109.9 billion, both solid beats.

Yet not every line item points to a smooth rally. A sensitive risk lies in the composition of Google Cloud’s order backlog. Reports suggest the $200 billion commitment from Anthropic could represent more than 40 percent of Alphabet’s future contracted cloud revenue. That kind of customer concentration draws uncomfortable parallels with Oracle, which saw its stock stumble when investors reassessed its dependence on OpenAI. The market knows that a single heavy client can turn a diversification story into a vulnerability overnight.

The dual narrative — Berkshire’s growing conviction alongside a record debt raise and shrinking free cash flow — captures the tension at the heart of Alphabet today. The company is spending heavily to stay at the forefront of AI, and the market is rewarding that ambition for now. Whether the payoff arrives in concrete products rather than promises will come into sharper focus at Google I/O and the following day’s Google Marketing Live event on May 20, where advertising and monetization take center stage. Deliver tangible AI applications for search, cloud, and ad clients, and the rally finds fresh legs. Settle for a lot of product talk, and the recent run-up begins to look harder to defend.