Alphabet, SpaceX Equity Surge Renews AI Debt-Binge Fears

The numbers coming out of tech capital markets this month are hard to ignore in isolation, but it is the pattern that makes credit desks uneasy. According to Bloomberg's Credit Weekly, Alphabet executed an $85 billion share sale and SpaceX completed a $75 billion record-setting initial public offering. Less than two weeks after that IPO, SpaceX returned to sell $25 billion in bonds, drawing nearly $90 billion in orders, a figure that reflects enormous institutional appetite, while still pricing roughly 0.4 percentage points wider than the average spread on similarly-rated BBB debt.

That wider spread is what Bloomberg's credit reporters are flagging. More supply is reportedly queuing: OpenAI is considering an IPO as soon as next year, after rival Anthropic PBC, and Meta Platforms is mulling raising equity. Debt issuance by so-called hyperscalers, including Meta, Alphabet, and Amazon, has already reached $159 billion year-to-date, roughly 91% of the $175 billion full-year forecast, up from about $121 billion last year. The reporting suggests the investment-grade bond market may not be able to accommodate all of their financing needs, with total issuance potentially exceeding $200 billion this year.

The underlying pressure on Alphabet is worth understanding in concrete terms. The company plans to spend between $180 billion and $190 billion on capex this year, and over the past 12 months has generated around $174 billion in cash from operations, meaning essentially all of its operating cash flow is being consumed by its data center buildout. Melius Research reportedly estimates Google's free cash flow will turn negative for the next few years as AI capex ramps. Google had already secured more than $55 billion in fresh debt since November before this equity offering.

The honest caveat is that overwhelming bond demand and a modestly wider spread can coexist, and SpaceX's deal cleared comfortably. What the reporting does not give you is clarity on whether hyperscalers will actually reduce capex if borrowing costs rise, or simply pay the premium and keep building.

The practical question for investors is whether the concentration of AI-linked supply hitting simultaneously represents temporary indigestion or an early structural limit on the market's capacity to finance the AI buildout. That will likely become clearer as the next wave of potential issuers, OpenAI's eventual public offering chief among them, attempts to clear the same constrained market.