Projected U.S. Debt Financing for AI Chips to Exceed $500 Billion by 2028

Data center demand has led to record borrowing in the U.S. credit market, yet tech companies continue to secure funds for AI chip development. Castle Securities predicts that by 2028, technology firms will raise over $500 billion in debt across public and private markets to finance AI chips, with the forecast possibly understated.

Credit Market Growth and Analyst View

Jeff Eason, chief analyst at Castle Securities' investment-grade bond division, stated in an interview that the projection for AI-related debt issuance could surpass current levels, positioning it as a significant emerging segment in the U.S. investment-grade credit landscape, an unprecedented scale in terms of market impact.

According to the analysis, AI chip debt financing might constitute a new benchmark in investment-grade markets. Eason emphasized that much of this funding will involve short-term bonds, typically 3 to 5 years, aligning with chip utilization cycles, and some will be issued via private placements under Rule 144A, which exempts registration and targets institutional investors.

By 2028, the projected $500 billion in financing could represent about 5 percent of the Bloomberg U.S. investment-grade bond index, though much of it may remain in private credit not captured by the public index.

Market Structure and Implications

The U.S. investment-grade credit market consists of public investment-grade bonds, Rule 144A-exempt private placements, and direct private credit from financial institutions. This structure will face a surge as new supplies enter, potentially displacing positions in technology, media, and telecom sectors.

Eason noted that the growth could fundamentally alter the investment-grade market composition, creating a new benchmark segment while influencing spread levels and capital allocation in the AI ecosystem.

Current AI Debt Landscape

Industry observers highlight that global markets have already processed approximately $5.7 trillion in AI-related debt, primarily issued by large cloud providers like Amazon, Microsoft, and Alphabet's Google.

Rule 144A allows streamlined issuance for private placements, reducing disclosure requirements and accelerating deals for targeted investors. This mechanism supports faster capital access but may not directly affect public market indices.

美国科技企业债务发行涉及超大规模融资规模分析

美国市场近期处理了亚马逊、谷歌等云服务商的大额债券发行，吸收了约600亿美元的中短期债务。这些科技巨头和AI公司如Anthropic、OpenAI正依赖债务工具扩展业务，并依赖企业担保进入流动性强的投资级市场。

云服务商债务处理情况

自去年起，美国市场已消化了超大规模云服务商约600亿美元、期限最长五年的债务融资。这些融资规模仅为明年2028年芯片制造商预计2500多亿美元债务发行的一部分，体现了投资市场的巨大吸收能力，Eason强调市场承接力度，金威胁指出此类融资规模前所未有。

头部AI公司的融资动态

Anthropic和OpenAI等AI领军企业正大举利用债券融资扩张，例如今年早些时候，Anthropic敲定一项350亿美元融资安排用于采购谷歌定制的TPU芯片。该交易被列为私募信贷纪录，博通为债务的优先债部分提供了担保，确保华尔街银行交易该债券层级份额。

优先债的定义与风险分析

优先债作为企业债务的一种类型，在清偿顺位中靠前，企业破产时可优先受偿，因此风险相对较低，是投资级市场的重要组成部分，帮助企业获得更多流动资金。

优先债的风险低于次级债，确保投资者在债务清算中有更高保障。