The primary threat to today's tight credit spreads is not weakening demand but a sustained surge in supply, particularly from AI 'hyperscalers'. The concern is how this new debt is employed, as it could fundamentally deteriorate the issuers' balance sheets over time.

An unprecedented wave of debt from U.S. AI and hyperscaler firms is creating technical pressure that pushes U.S. high-grade spreads wider. This dynamic, not EM fundamentals, is the key driver behind the narrowing premium of EM investment-grade corporate bonds over their U.S. counterparts.

Emerging market high-yield bonds are demonstrating significant strength, with spreads tightening year-to-date while US high-yield spreads remain flat. This outperformance has persisted through record sovereign issuance, suggesting a strong underlying bid for EM risk and a successful spread compression theme within the asset class.

A massive U.S. capital expenditure cycle for AI and hyperscalers is driving heavy issuance in the U.S. high-grade bond market. This increased supply can crowd out investor demand for emerging market investment-grade credit, creating a notable headwind by potentially pushing up DM spreads.

Despite rising US Treasury yields, inflation concerns, and geopolitical risks, emerging market sovereign credit spreads continue to compress to their tightest levels in two decades. This reflects strong risk appetite and perceived EM resilience as markets pivot from recessionary fears to a global growth narrative.

Heavy bond issuance from large US tech companies is widening US investment-grade credit spreads. In contrast, Emerging Market issuers have already completed most of their annual issuance, creating favorable supply dynamics. This has led to EM debt outperforming its developed market counterparts despite broader market headwinds.

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.

Despite being at historically tight levels, EM sovereign credit spreads are unlikely to widen significantly from an EM-specific slowdown. The catalyst for a major sell-off would have to be a 'beta move' originating from a crisis in core US markets, such as equities or corporate credit, given the current strength of EM fundamentals.

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.