The AI Arms Race: A Deep Dive into the Private Markets

As the private markets continue to evolve at breakneck speed, one thing is clear: the stakes have never been higher. In this whirlwind of activity, three players stand out - Anthropic, OpenAI, and SpaceX - each with its own unique narrative and implications for investors.

At the heart of the drama is Anthropic, a company that has suddenly become the darling of the private markets. Demand for its shares has reached a fever pitch, with buyers clamoring to get in on the action. This surge in demand can be attributed, in part, to Anthropic’s high-profile standoff with the Department of Defense. Initially seen as a negative development, this turn of events ultimately became a marketing coup for the company, amplifying its narrative and differentiating it from OpenAI.

The result is a market where investors are willing to pay top dollar for Anthropic shares, with some reportedly holding $2 billion in cash ready to deploy into the company. This phenomenon is reflected in Rainmaker Securities’ own marketplace, where Anderson notes that Anthropic is the “hardest stock to source.” The scarcity of sellers has driven up demand and sent valuations soaring.

In contrast, OpenAI’s secondary market is a different story altogether. Despite its impressive valuation of $765 billion (a significant discount to its primary-round valuation), investors are struggling to find buyers for their shares. This lack of excitement is reflected in the company’s recent efforts to assert more control over secondary trading, including establishing authorized channels through banks and cracking down on high-fee broker models.

SpaceX, meanwhile, stands apart from this drama. As Anderson notes, the rocket and satellite behemoth has consistently outperformed its peers, avoiding the punishing correction that hit many private companies between 2022 and 2024. This stability can be attributed to disciplined pricing and a reluctance to squeeze every last dollar out of each funding round or tender offer.

The implications of these developments are far-reaching. For investors seeking exposure to AI, the choice is no longer simply a matter of which model will ultimately win - Anthropic’s momentum has shifted the narrative in its favor. OpenAI may still have its loyal followers, but the excitement has waned, and valuations reflect this diminished enthusiasm.

In the end, the private markets are a complex web of narratives, each with its own twists and turns. As the drama unfolds, one thing is clear: investors must be prepared to adapt to shifting sentiment and capitalize on opportunities as they arise.


Source: https://techcrunch.com/2026/04/03/anthropic-is-having-a-moment-in-the-private-markets-spacex-could-spoil-the-party/