Anthropic’s plan to go public on the Nasdaq has hit significant turbulence following the release of its IPO prospectus and a series of earnings reports from its major AI partners, Microsoft, Google, and Amazon. These tech giants revealed quarterly results that heightened concerns over the rapid expansion and spending required for AI infrastructure. Investors are uneasy about Anthropic's financial health as the company reported a massive $80 billion net loss in the first half of 2026 and disclosed hundreds of billions in computing commitments, raising questions about the sustainability of its business model amid tightening market conditions and rising interest rates.

The intertwined relationships between Anthropic and its hyperscaler partners complicate the situation. Amazon, Google, and Microsoft have collectively invested over $36 billion in Anthropic, yet the AI firm must commit to spending more than $224 billion with these and other providers, regardless of actual usage. This massive financial commitment reflects the intensity of Anthropic’s AI buildout and the demand for cloud capacity, which is being pressured by rising costs and borrowing difficulties faced by neocloud providers like CoreWeave and Nebius. These dynamics pose a risk that capacity might not scale quickly enough to meet Anthropic’s requirements, further unsettling investors.

Financial reports from Microsoft, Google, and Amazon underscore the strain on cash flows caused by their aggressive AI investments. Microsoft cut its capital expenditure forecast to $170 billion, while Amazon and Google maintained their projections but also reported significant negative free cash flow, with Amazon showing a $42.4 billion outflow over the past year. Microsoft plans to raise $25 billion in bonds to fund its infrastructure growth, signaling that even the largest players cannot sustain their AI projects purely through existing cash flows. This has led market analysts to warn of an increasingly unstable funding environment for AI development.

Despite these headwinds, cloud revenue growth remains strong, particularly for AI services, as demand continues to rise. Anthropic’s investors will be closely watching how the company and its partners navigate this challenging financial landscape. The IPO market itself is cautious, with recent tech offerings being postponed or withdrawn amid uncertainty. While Anthropic shows impressive sales growth and profitability potential, investors face tough decisions on how much risk to bear in an AI sector grappling with high capital needs, volatile markets, and evolving competitive pressures.