Jitters over AI spending set to grow as US tech giants flood bond market ​

Investors are growing uneasy as major cloud and AI “hyperscalers” increasingly tap the public bond market to fund AI-ready data centers—about $90 billion of issuance since September from Alphabet, Meta, Oracle and Amazon and more than $120 billion year-to-date including Meta’s $27 billion Blue Owl deal versus a five-year average of $28 billion—raising questions about the market’s capacity to absorb supply. Although leverage for these firms remains low (generally below 1×) and UBS estimates 80–90% of planned capex still comes from cash, the surge in issuance has pushed credit spreads modestly wider and forced 10–15 basis-point new-issue concessions, contributing to a recent equity pullback and spotlighting funding risk for the AI investment story. With AI capex forecast to rise to $600 billion by 2027 and net debt issuance expected to reach roughly $100 billion in 2026, investors should monitor further bond supply, spread movements and the shifting mix of cash versus debt financing as potential constraints on near-term tech valuations.

Analysis

Four hyperscaler cloud and AI platform companies have issued nearly $90 billion of public bonds since September — Alphabet $25 billion, Meta $30 billion, Oracle $18 billion and Amazon $15 billion — and hyperscaler debt issuance exceeds $120 billion year-to-date when including Meta’s $27 billion Blue Owl financing versus a five‑year average of $28 billion. This marks a material shift from the sector’s historic reliance on cash to fund capex and signals that public bond markets are now a primary source for financing large AI data‑center builds.

Market reception has been mixed: demand for deals remains strong but issuers paid roughly 10–15 basis points of new‑issue concessions and U.S. investment‑grade spreads have ticked wider, contributing to a recent equity pullback despite the S&P 500 being up about 11% YTD. Analysts and banks note hyperscalers still show low leverage (generally below 1×) and UBS estimates 80–90% of planned capex will come from cash, yet AI capex is forecast to rise to $600 billion by 2027 and Sage Advisory sees net debt issuance of about $100 billion in 2026 — a supply dynamic that could constrain valuations if investor appetite softens.

Issuer divergence matters: Nvidia has trimmed long‑term debt and received a positive S&P outlook tied to strong revenue and cash flow, while Goldman and others caution that supply bottlenecks or investor appetite, not cash availability, are likeliest near‑term constraints on capex. The key risk for markets is absorption capacity — if issuance outpaces demand, credit spreads and funding costs could increase and put downward pressure on tech equity multiples.

Key Decisions for Investors

• Reassess cyclical exposure to hyperscaler equities and their newly issued IG bonds and consider trimming positions if your portfolio is sensitive to widening credit spreads or higher supply risk,
• Use meaningful spread widening and elevated new‑issue concessions (current reports ~10–15 bps) as tactical entry points for high‑quality tech bond purchases but prefer shorter to intermediate durations to limit interest‑rate sensitivity,
• Tilt selectively toward suppliers with improving credit profiles such as Nvidia, which reduced long‑term debt and received a positive S&P outlook, relative to hyperscalers increasing leverage for capex,
• Monitor three lead indicators — net issuance versus the Sage Advisory $100 billion 2026 projection, hyperscaler leverage trends around the 1× threshold, and weekly movements in IG credit spreads — and be prepared to hedge or reduce exposure if all three deteriorate