The private-share secondary market is in flux, and three names—Anthropic, OpenAI and SpaceX—are driving the change. A recent surge in demand for Anthropic, softer appetite for OpenAI, and SpaceX’s confidential IPO filing have combined to reshape where buyers and sellers are placing their bets and where liquidity will flow this year.
Rainmaker Securities president Glen Anderson, who has tracked late-stage private trading for more than a decade, says the pool of institutional buyers has exploded since 2010. That expansion matters now because capital is finite: when one large issuer moves toward the public markets, it can absorb the attention—and the checks—that would otherwise be available to peers.
On the secondary market, Anthropic has become unusually hard to source. Buyers are aggressively chasing shares, with some broker-dealers reporting billions of dollars in ready capital aimed at the company. At the same time, chunks of OpenAI stock that sellers have tried to place have struggled to find takers, contributing to a noticeable valuation gap between primary-round pricing and what buyers are willing to pay today.
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Part of Anthropic’s lift, market participants say, stems from a public confrontation with a government agency that transformed perceptions of the company overnight. What began as a potential reputational risk instead reinforced a narrative that some investors find appealing—one that positions Anthropic as distinct from its competitors and, in some corners, as a challenger to powerful institutions.
That differentiation has real consequences. Institutions often want exposure to multiple leading AI developers, but when one name becomes the center of attention it can pull capital away from others—even if no single company is viewed as fully dominant yet.
OpenAI has not collapsed, but the market for its shares is noticeably less active than Anthropic’s. Secondary trading data and broker feedback put OpenAI’s effective market valuation below the most recent primary-round figure, and the firm itself has warned investors to be cautious about buying equity through unauthorized channels. Some large banks have stepped in to distribute OpenAI shares to wealthy clients through approved programs, while other institutions continue to charge carry on deals for high-demand names like Anthropic.
SpaceX stands apart. Unlike many private companies that saw steep price corrections between 2022 and 2024, SpaceX’s secondary-market prices have largely trended upward. Industry contacts attribute that performance to conservative round pricing and management discipline—choices that preserved upside for early backers rather than maximizing valuations every funding cycle.
That discipline has delivered outsized gains for long-term shareholders: investors who backed the company when it traded at roughly $12 billion in 2015 now hold stakes worth orders of magnitude more as private valuations push past the trillion-dollar mark ahead of a planned public listing.
SpaceX’s recent confidential filing to go public—reported this week—appears to have accelerated demand among buyers and further tightened supply. As the company nears a liquidity event, existing holders have less reason to sell, shrinking what was already a limited pool of available shares. In practical terms, that means the firm that lists first in a hot vertical often captures disproportionate investor attention and capital.
| Company | Secondary-market signal | Notable driver | IPO outlook |
|---|---|---|---|
| Anthropic | Extraordinary buyer demand; very few sellers | High-profile public controversy bolstering investor interest | Exploring a public listing; timing could be affected by other IPOs |
| OpenAI | Less vibrant secondary activity; price below latest primary valuation | Company advisory to use authorized sale channels; mixed liquidity | Also considering IPO; may face tougher competition for capital |
| SpaceX | Consistent upward pricing; limited available supply | Conservative round pricing and sustained operational momentum | Filed confidentially this week; expected to be a major market event |
- Liquidity will concentrate. A large IPO—especially from SpaceX—can absorb sizable pools of capital and reduce the funds available for other listings.
- Valuation signals are diverging. Secondary trades are revealing how buyers value companies today, sometimes below headline private-round numbers.
- Timing matters. The sequencing of IPOs will influence pricing power and investor attention for follow-on entrants.
- Distribution channels influence access. Banks offering shares through sanctioned programs can change who gets exposure and under what fee arrangements.
For investors and employees holding private equity, the current environment underscores two practical stakes: patience can preserve upside as IPOs approach, but standing on the sidelines when a marquee listing arrives can mean missing one of the year’s largest capital reallocations. Market participants now face a classic allocation choice—commit early to a high-profile private name or wait and risk that the largest checks are already committed elsewhere.
