Tech Firms Sold $55B in Bonds for AI, Credit Spreads Widen 12 bp

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Major technology companies issued $55 billion of bonds in Q4 2025 to fund AI initiatives, pushing average credit spreads wider by 12 basis points to 85 bp. Yields on tech junk bonds climbed to 3.9%, raising borrowing costs for future AI projects.

1. Bond Issuance Surge

Google joined peers in raising roughly $15 billion of the total $55 billion in Q4 2025 bond sales specifically allocated to AI research and data-center expansion. The broader tech sector tapped debt markets at a pace 25 % above last year’s quarterly average.

2. Credit Spread Impact

The influx of new supply drove average credit spreads on technology sector bonds wider by 12 basis points, lifting the sector’s spread to 85 bp over Treasuries. Higher-risk, sub-investment-grade issues saw even greater widening as investors demanded steeper yields for AI-driven debt.

3. Funding Cost Implications

With yields on tech junk bonds climbing to 3.9 %, companies face elevated borrowing costs that could trim margins on large-scale AI deployments. Analysts warn that sustained higher rates may force tech leaders to rethink the pace of future capital-intensive AI rollouts.

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