Amazon, Microsoft, and their hyperscale peers issued $159 billion in corporate bonds through the first quarter of 2026, a 47% increase over the same period in 2025. The spike marks the fastest debt accumulation in the sector's history, surpassing even the 2020 pandemic-era issuance cycle when Big Tech first crossed $100 billion in a single quarter. The firms are borrowing at rates between 4.2% and 5.1% for seven- to ten-year maturities, capitalizing on credit spreads that remain compressed despite the Federal Reserve holding policy rates above 4.5%.
The capital is earmarked almost exclusively for AI infrastructure: data center construction, GPU procurement, and power contracts. Microsoft alone accounted for $42 billion of the total, with $18 billion issued in January to fund its partnership commitments with OpenAI and internal Azure capacity expansion. Amazon followed with $38 billion, split between AWS buildouts in Virginia and Oregon and a previously undisclosed $9 billion tranche tied to Anthropic's compute requirements. Google parent Alphabet added $27 billion, Apple $21 billion, and Meta $14 billion. The remainder came from Oracle, Nvidia, and a handful of second-tier cloud providers. None of the five largest issuers has meaningfully tapped equity markets in the same period.
The debt preference reflects two realities. First, the infrastructure race has outpaced internal cash generation. Amazon's free cash flow in 2025 was $41 billion, but the firm committed $75 billion to capital expenditures this year, nearly double its 2024 outlay. Microsoft's capex guidance rose from $50 billion to $80 billion in the span of six months. Second, equity dilution remains unpalatable to management teams that spent the last decade buying back shares. Borrowing at sub-6% rates to fund assets that depreciate over seven years but generate recurring revenue for a decade or more is a simple arbitrage, provided demand materializes. The bond market has shown no hesitation. Oversubscription ratios averaged 3.2x across the cohort, and secondary market spreads have tightened 12 basis points since January.
The risk is not immediate. Investment-grade ratings remain intact, and the hyperscalers carry net cash positions that still dwarf their debt loads. Amazon's net leverage sits at 0.6x EBITDA, Microsoft at 0.4x. But the trajectory matters. If capex continues at this pace and AI monetization lags expectations by even 18 months, refinancing risk begins to appear in 2029 when the bulk of this issuance matures. The market is pricing none of that in yet. Credit default swaps on Microsoft five-year debt trade at 28 basis points, unchanged from six months ago. Amazon's are at 32 basis points, down from 35 in November.
Allocators should track quarterly capex disclosures and the gap between guided spend and actual cash deployment. Microsoft reports April 29. Amazon follows May 1. If either firm revises full-year capex upward again, a second issuance wave is likely before summer. Watch also for power contract announcements in Texas and the Carolinas, where grid constraints are forcing hyperscalers to fund generation capacity directly. Oracle disclosed a $4 billion nuclear partnership in March; others will follow.
The debt is not a sign of weakness. It is a bet that the infrastructure layer is worth whatever it costs to own it, and that bond investors will continue funding the race at rates well below the equity hurdle. So far, they have.
The takeaway
Hyperscalers are borrowing faster than they generate cash, with **$159B** in Q1 debt funding an infrastructure race priced for perfect AI monetization.
ai infrastructurecorporate debthyperscalerscapital marketsamazonmicrosoft
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