In a notable shift for Silicon Valley, large cloud-computing and AI platform operators—known as hyperscalers—have leaned heavily on the bond market in recent weeks to bankroll massive data-center expansion. Since September, the group has issued nearly $90 billion in public bonds: Alphabet raised $25 billion, Meta $30 billion, Oracle $18 billion, and Amazon $15 billion, according to Reuters’ calculations from publicly available disclosures. Microsoft remains the only major hyperscaler that has not tapped debt markets recently.
Borrowing Surge Fuels Market Questions
Fund managers say leverage levels across big tech firms remain modest relative to their huge cash flows. But the speed and scale of the new issuance have heightened concerns about market capacity—particularly amid a broader pullback in U.S. equities driven partly by anxiety over AI-related spending.
“You have all these hyperscaler issuance coming out, and the market woke up to the fact that it’s not going to be private credit or free cash flow funding AI,” said Brij Khurana, portfolio manager at Wellington Management Company. “You need capital to come from somewhere… money almost coming out of stocks into bonds.”
Including Meta’s $27 billion financing arrangement with Blue Owl Capital for a major data-center project, total hyperscaler debt issuance this year has climbed past $120 billion, far above the $28 billion five-year average, analysts at BofA Securities noted.
Investors Weigh AI Spend Against Long-Term Returns
Some strategists say the rapid increase in borrowing adds to concerns that AI investments—while expected to generate long-term returns—have yet to demonstrate profits commensurate with the scale of capital being deployed.
“There are doubts… related to the need for firms to be able to finance AI spending, and that includes through debt finance,” said Larry Hatheway, global investment strategist at Franklin Templeton Institute.
AI capital expenditure is projected to rise to $600 billion by 2027, up from more than $200 billion in 2024 and nearly $400 billion in 2025, according to Sage Advisory, which also expects net debt issuance to reach $100 billion in 2026.
Some Outliers Maintain Conservative Leverage
Not all major tech firms are adding to their liabilities. Nvidia, a key supplier to AI data-center builders, has trimmed long-term debt from $8.5 billion in January to $7.5 billion by the end of Q3. S&P Global Ratings recently upgraded its outlook on the company to positive, citing robust revenue growth and strong cash flow.
Microsoft and Oracle declined to comment on the recent funding trends. An Amazon spokesperson said proceeds from its bond sale would support business investment, capex, and debt refinancing, describing the move as routine financial planning. Alphabet and Meta did not immediately comment.
Bond Market Feels the Weight of Supply
Despite strong demand for recent tech bond deals, investors have required meaningful new-issue premiums to absorb the flow. Alphabet and Meta paid roughly 10–15 basis points above existing debt levels in their latest offerings, according to Janus Henderson.
U.S. investment-grade credit spreads—still low by historical standards—have edged higher in recent weeks, partly reflecting concern about the torrent of issuance.
“For much of the year, credit spreads have been grinding tighter… But the recent deluge of supply, particularly from tech, may have changed the game,” Janus Henderson said.
Cash Flow Remains the Core Funding Engine
Analysts note that debt will remain a relatively small slice of hyperscaler AI budgets. UBS estimates that 80–90% of planned capital spending is still funded by internal cash flows. Sage Advisory likewise expects the companies to move from net-cash positions to modest borrowing, with leverage likely to remain below 1× earnings.
Goldman Sachs analysts argue that investor appetite and supply constraints are more likely to restrain capex than balance-sheet limitations. Excluding Oracle, the major hyperscalers could potentially absorb as much as $700 billion in additional debt while maintaining safety levels typical of A+-rated firms.
“These companies still have very solid business lines that are just spinning off tons of cash,” said Garrett Melson, portfolio strategist at Natixis Investment Managers Solutions.