The US convertible bond market is experiencing a record year, largely propelled by the booming artificial intelligence sector. Issuers are increasingly turning to convertible bonds to raise capital, offering zero-interest debt in exchange for equity options in their high-growth tech companies. This trend highlights a significant shift in investor appetite towards riskier assets with substantial return potential, underscoring the tech sector's growing economic influence.

Deal count for convertible bond pricings jumped 43% in 2026 compared to the previous year, making it the strongest start since 2021. Several prominent tech companies have issued zero-coupon convertibles, including Akamai with $3.0 billion, ON Semiconductor with $1.3 billion, and Ciena with an upsized offering of $2.5 billion. These companies are leveraging convertibles to secure cheap debt, defer dilution, and fund significant growth initiatives, such as Akamai's cloud infrastructure buildout and Ciena's debt repayment and share buybacks.

Issuance volumes have been robust, with $85.5 billion raised across 127 convertible deals year-to-date, already nearing 90% of the total raised in all of 2024. Technology-related companies account for the majority of this activity, raising $56.8 billion across 43 deals, representing 66.4% of the total volume. Notable large transactions include Alphabet's two $9.625 billion tranches, Alibaba's $5 billion, Oracle's $5 billion, CoreWeave's $4 billion, and DoorDash's $2.75 billion.

Investors, including hedge funds employing convertible arbitrage strategies and long-only crossover funds, are willing to accept zero coupons due to the embedded equity options and potential for upside in issuer stock. This strong demand allows issuers to achieve attractive financing terms, including high conversion premiums. This financing method is particularly appealing in a higher-for-longer interest rate environment, as it offers a cheaper alternative to traditional straight bonds which currently carry coupons of 4.5%-6.0% for similar-rated tech companies.

While convertibles offer immediate benefits like cheap capital and deferred dilution, potential risks include refinancing challenges if stock prices remain below conversion strikes at maturity. However, analysts believe the current market conditions are balanced, with terms attractive to both issuers and investors, driven by the substantial capital requirements for AI-related expansion. The convertible market is well-positioned to address the extraordinary capital demands of the AI opportunity.