AI Boom Drives Record Convertible Bond Issuance in Debt Market

The U.S. convertible bond market has surged to record levels, driven by intense financing demand for artificial intelligence (AI) technologies. Issuances in the first four months of 2026 reached approximately $34 billion, more than double the volume from the same period last year. This volume represents the highest recorded since the beginning of the COVID-19 pandemic and puts the market on track to surpass the full-year record of $120 billion set in 2025.

The primary catalyst for this surge has been the substantial infrastructure investments required for AI projects. According to analysts, roughly half of the convertible bond issuances year-to-date have been allocated to AI-related initiatives. Companies are utilizing these funds to finance capital-intensive expenditures such as data centers, cloud infrastructure, and power expansion. Additionally, some firms have turned to convertible bonds to refinance debt issued during the pandemic era. Major issuers include Oracle (ORCL) with $5 billion, CoreWeave with $4 billion, Australia-based data center company IREN Limited with $2.6 billion, and NextEra Energy (NEE) with $2.3 billion. Akamai Technologies (AKAM) issued $3.5 billion, Duke Energy (DUK) $1.5 billion, and Microchip Technology (MCHP) $900 million.

In a high-interest-rate environment, the rising cost of traditional borrowing and the dilution risk associated with equity issuances make convertible bonds attractive to companies. Investors, in turn, favor these instruments for their combination of bond stability and potential equity upside. The ICE BofA US Convertible index has gained over 20% this year, outperforming the S&P 500's 10% and the Nasdaq's 13% returns. This clearly demonstrates the strong investor appetite for AI-related assets.

The rapid advancement and competition in AI technologies compel companies to continuously make large-scale investments. In this context, convertible bonds have become a critical financing tool for firms with high growth potential but not yet strong cash flows. However, Morgan Stanley's June report forecasts global AI-related debt issuance to reach $570 billion in 2026. This indicates that the technology build-out is evolving into a credit story.

Analysts anticipate that the momentum in the convertible bond market will continue, driven by the massive infrastructure build-outs and chip demand fueled by the AI boom. Nevertheless, a Bank of America survey in February revealed that 23% of bond investors cited an AI bubble as their top risk, up from 9% in December 2024. This growing concern suggests that a cautious approach is also developing in the market, questioning the bond market's confidence in AI investments before revenue streams fully materialize.