MOUNTAIN VIEW, Calif.—The order book closed at roughly $115 billion, a pile of demand so large that it ranked among the biggest of the year. Alphabet said Thursday it has priced $25 billion of investment-grade bonds, an offering tied to the company’s artificial-intelligence spending and so generously priced that investors lined up in numbers usually reserved for sovereign debt. The order book, according to people familiar with the offering, peaked around $115 billion, behind only the $129 billion Oracle attracted in February and the roughly $126 billion Amazon drew in March.
The offering is the latest installment of a debt-raising machine that has made Alphabet the largest issuer of AI-linked bonds in the market. Since the start of 2025, the company has raised more than $114 billion in cumulative bond financing, a sum that reflects the extraordinary capital requirements of the AI buildout. The company is spending tens of billions of dollars a year on data centers, chips and the energy to power them, and its balance sheet—one of the strongest in corporate America—has become a funding source of choice for investors who want exposure to AI without the risk of equity markets.
The pricing tells a story about demand. Alphabet’s bonds are among the most sought-after corporate debt in the world, and the company can borrow at spreads that would have been unthinkable for a technology company a decade ago. By offering a yield premium over its existing debt, the company drew an order book roughly four-and-a-half times the size of the deal, a ratio that allowed it to price at the tight end of expectations while still rewarding the investors who showed up. Bankers described the execution as textbook: big enough to matter, priced to clear, and structured to leave nothing on the table.
The proceeds are earmarked for the company’s general corporate purposes, which in practice means the AI buildout. Alphabet’s capital spending has surged over the past two years as it builds out its cloud regions, funds its Gemini model development and expands the infrastructure that supports its core search and advertising businesses. The company has said it expects spending to keep rising, and debt markets are the tool it is using to fund the expansion without touching the cash it wants to return to shareholders. The bond program is, in effect, a financing layer beneath the largest capital expenditure program in the company’s history.
The investor base for the deal reflects the market’s hunger for AI exposure. The order book included pension funds, insurers, sovereign wealth funds and the asset managers that dominate global fixed income, all of them drawn by a rare combination: a triple-A balance sheet attached to the industry with the most growth in the economy. For many of these investors, Alphabet’s bonds are the closest they can get to owning the AI trade without owning the volatile stocks that go with it. The oversubscription is a measure of how thin the supply of safe AI exposure has become.
The comparison to Oracle and Amazon is instructive. All three companies are borrowing heavily to fund AI infrastructure, and all three have found eager buyers. Oracle’s $129 billion order book in February was the largest of the year, a testament to the market’s appetite for the company’s AI cloud story. Amazon’s March deal drew about $126 billion, and now Alphabet has added a third data point. The pattern suggests that the AI debt market is not a bubble but a structural shift: investors have decided that AI infrastructure is a durable asset class, and they are funding it as such.
The scale of Alphabet’s cumulative issuance—more than $114 billion since early 2025—puts it in a class by itself among AI-linked borrowers. The company has used a mix of maturities, from short-term paper to 40-year bonds, to build a debt profile that matches the long-lived nature of its assets. Data centers are built to run for decades, and Alphabet is matching its funding to that timeline, locking in rates while they remain reasonable. The discipline is visible in the company’s approach: borrow heavily, but only at prices the market is eager to pay.
The risks are the same ones that attach to the entire AI buildout. If the returns on AI infrastructure disappoint, the companies that borrowed to build it will face a reckoning, and even a balance sheet as strong as Alphabet’s would feel the strain. Bond investors are protected by the company’s cash flows, which remain enormous, but the valuations that underpin the borrowing assume that AI demand continues to grow. So far the market is comfortable with that assumption; the $115 billion order book is the evidence.
For the debt markets, the deal cements Alphabet’s place at the center of the AI financing complex. The company has become the benchmark issuer for AI-linked debt, the name that institutional investors buy when they want safe exposure to the theme, and its returns to market have been met each time by a flood of demand. The $25 billion raised Thursday will fund the next chapter of the buildout, and the investors who provided it will be watching the same thing the equity market watches: whether the spending produces the growth it promises. For now, the demand side of that equation is not in question. The order book spoke first, and it spoke loudly.
