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OpenAI, Anthropic and SpaceX Are Shaking Up VC Fundraising

Reported by Bloomberg
Jun 25, 2026· 3 min read
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Key Takeaways
  • • Anthropic raised $65 billion in a Series H funding round at a $965 billion post-money valuation, surpassing OpenAI's most recent valuation and positioning the AI lab as the most highly valued of the three companies preparing for IPO.
  • • SpaceX, OpenAI, and Anthropic are collectively expected to reach trillion-dollar-plus valuations upon entering public markets, creating what industry observers describe as "giga-IPOs" that will test market capacity and reshape global equity indexes.
  • • Venture capital returns from the three IPOs are projected to exceed the total cash VCs have generated from every other startup exit since a specified prior benchmark, signaling an unprecedented payday for early-stage investors and LP vehicles.
  • • Public investors will gain rare access to ownership stakes in three foundational technology companies simultaneously, with exposure available through open-end funds, closed-end funds, and exchange-traded fund structures.
  • • The IPO wave occurs despite both Anthropic and OpenAI operating at significant losses, with their R&D and training costs exceeding current revenue, raising questions about long-term profitability and unit economics at scale.
Summary
The anticipated initial public offerings of SpaceX, OpenAI, and Anthropic represent a historic consolidation of venture capital returns and a potential inflection point for public equity markets. All three companies are projected to command valuations exceeding $1 trillion upon listing, creating an unprecedented concentration of mega-cap tech debuts in a compressed timeframe.

Anthropic has emerged as the highest-valued of the three companies following its most recent fundraising activity. The AI lab completed a Series H financing round raising $65 billion at a $965 billion post-money valuation, according to the company and multiple market sources. This round was led by Altimeter Capital, Dragoneer, Greenoaks Capital, and Sequoia Capital. The capital infusion positions Anthropic ahead of OpenAI in current valuation metrics. OpenAI, by contrast, announced a $122 billion funding round on March 31, 2026, though venture capital represented only a small portion of that total capital raise.

The three companies' collective IPO activity is on track to generate venture capital returns that will exceed the total cash returns VCs have realized from every other startup exit combined—a remarkable concentration of wealth creation. Industry observers note that public markets will face a novel challenge in absorbing three simultaneously listed technology giants, potentially reshaping major equity indexes and testing retail and institutional investor appetite for mega-cap tech allocations.

Both Anthropic and OpenAI are well documented as operating at substantial annual losses, with their research and development expenditures and model training costs significantly exceeding current revenue generation. This financial profile raises fundamental questions about the path to sustained profitability and the unit economics underlying these valuations, even as investor demand remains robust. Investors are already gaining exposure to the three companies through various fund structures including open-end funds, closed-end funds, and exchange-traded funds, providing multiple entry points ahead of formal IPO launches.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Bloomberg OpenAI, Anthropic and SpaceX Are Shaking Up VC Fundraising