Massive AI and cloud infrastructure spending by tech giants is flooding the market with new debt. For the first time since the 2008 crisis, this oversupply, not macroeconomic fears, is becoming a primary driver of market volatility and repricing risk for existing corporate bonds.

Unlike equities, credit markets face a growing risk from the AI boom. As companies increasingly use debt instead of cash to finance AI and data center expansion, the rising supply of corporate bonds could pressure credit spreads to widen, even in a strong economy, echoing dynamics from the late 1990s tech bubble.

Morgan Stanley predicts the AI investment cycle, plus M&A and capex, will drive a 60% surge in U.S. investment-grade bond issuance in 2026. This massive supply increase is expected to push U.S. credit spreads wider, even if the underlying economy remains healthy and demand is strong.

Trillion-dollar tech companies are issuing massive bonds to fund AI CapEx, attracting immense demand from yield-hungry institutions. This 'hoovers' up available capital, making it harder and more expensive for smaller, middle-market businesses to secure financing and deepening the K-shaped economic divide.

The massive ~$1.5 trillion in debt financing required for AI infrastructure will create a supply glut in the investment-grade (IG) bond market. This technical pressure, despite solid company fundamentals, makes IG bonds less attractive. High-yield (HY) bonds are favored as they don't face this supply headwind and default rates are expected to fall.

Tech giants are issuing massive amounts of highly-rated debt at a discount to fund AI expansion. This makes existing, lower-rated corporate bonds from other sectors look less attractive by comparison, forcing a repricing of risk and higher borrowing costs across the credit spectrum.

Despite forecasting a massive surge in bond issuance to fund AI and M&A, Morgan Stanley expects credit spreads to widen only modestly. This is because high-quality, highly-rated companies will lead the issuance, and continued demand from yield-focused buyers should help anchor spreads.

An anticipated $3 trillion in AI-related spending requires significant debt financing, creating a $1.5 trillion gap. This is expected to cause a 60% increase in net investment-grade bond issuance, creating a supply-side headwind that makes the asset class less attractive despite sound fundamentals.

Barclays forecasts a 40% jump in net investment-grade debt supply in 2026, driven by tech sector CapEx and renewed M&A activity. This massive influx of new bonds will test market demand and could lead to wider credit spreads, even if economic fundamentals remain stable.