Increased AI spending boosts AI-supplier equities but requires more corporate borrowing, a negative for credit markets. Conversely, a spending slowdown would hurt equity market confidence, which could also drag down credit markets by association, creating a tough spot for bondholders.

The AI revolution is being financed through massive bond issuance by tech giants. This debt fuels CapEx, which becomes top-line revenue for other companies. The cycle could be extended if this debt is integrated into passive high-yield indices, attracting more capital.

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.

A primary market risk is a sudden stop in the AI investment cycle. While this would clearly pressure equities, it could counter-intuitively benefit investment-grade credit by reducing new bond issuance—the main factor forecast to widen spreads.

For the debt-fueled AI infrastructure market, the first sign of trouble won't be defaults. A more immediate red flag is a slowdown in AI investment by key customers like Meta, Alphabet, and Microsoft. Any deceleration signals a potential mismatch between supply and future demand, threatening the entire credit structure.

Investment-grade technology bonds now trade at a wider spread to the overall corporate index, a reversal of historical trends. This isn't due to increased credit risk or downgrades, but is a technical market effect caused by the sheer volume of debt being issued by hyperscalers to fund AI capital expenditures.

The bond market is unconcerned by massive AI capital expenditure from tech giants, viewing them as high-quality credits with immense capacity for debt. In contrast, the equity market is highly volatile, punishing even minor deviations from expected growth, highlighting a fundamental difference in risk assessment between debt and equity investors.

A surge in investment-grade bond issuance to fund AI capital expenditures will insulate the high-yield market. This technical factor is expected to drive high-yield bond outperformance versus higher-quality corporate bonds, which will face supply pressure.