Anthropic’s private market momentum is currently capturing significant attention, with the AI giant emerging as the hottest commodity in the secondary market for private shares. This dynamic landscape, observed closely by industry veterans like Glen Anderson, president of Rainmaker Securities, paints a compelling picture of shifting investor sentiment and strategic positioning among tech’s most valuable private entities.
Anderson, whose firm facilitates transactions in roughly 1,000 private stocks, describes the current secondary market as experiencing one of its most active periods ever. At the heart of this activity are three key players: Anthropic, OpenAI, and the looming presence of SpaceX.
Anthropic’s Ascendant Trajectory in Private Markets
The demand for Anthropic’s shares has become almost insatiable, a sentiment echoed across the private securities market. Bloomberg recently highlighted how buyers are ready to deploy billions into Anthropic, contrasting sharply with the relative struggle to offload OpenAI shares. Anderson confirms this trend, stating,
“The hardest stock to source in our marketplace is Anthropic. There’s just no sellers.”
This intense demand, he argues, was unexpectedly amplified by Anthropic’s public dispute with the Department of Defense. What initially seemed like a setback transformed into a public relations boon, fostering a narrative of the company as a ‘hero’ taking on big government, further differentiating it from competitors like OpenAI.
OpenAI’s Shifting Fortunes and Valuation Dynamics
While Anthropic enjoys its moment, OpenAI’s position in the secondary market is less vibrant. Though not in freefall, the enthusiasm has waned compared to its AI rival. Anderson notes that many institutional investors still seek exposure to both, acknowledging the jury is still out on which AI model will ultimately prevail. However, the immediate momentum has undeniably shifted. Regarding valuation, OpenAI shares are reportedly trading at a discount in the secondary market, around a $765 billion valuation, compared to its primary-round valuation of $852 billion. OpenAI itself has attempted to exert greater control over secondary trading, establishing authorized channels through banks to curb high-fee broker models.
SpaceX: The Unshakeable Force and Looming IPO
Amidst the fluctuating fortunes of AI titans, SpaceX stands as a beacon of consistent growth. Unlike many private companies that experienced significant corrections between 2022 and 2024, SpaceX has maintained a steady upward trajectory. Anderson attributes this stability to disciplined pricing and a long-term strategy that avoided maximizing every funding round.
“A lot of companies will fall for the temptation to maximize the price of their stock in every round. The problem is that that doesn’t leave any room for error.”
SpaceX’s conservative approach has yielded enormous returns for early investors, with those who invested in 2015 now sitting on gains exceeding 100x, as the company’s valuation surpasses $1 trillion. The much-anticipated IPO for SpaceX, confidentially filed this week, is poised to be a monumental event, potentially reshaping the entire private equity landscape and drawing significant capital away from other opportunities, including those fueling Anthropic’s private market momentum.
The current secondary market for private shares is a fascinating interplay of innovation, investor sentiment, and strategic timing. While Anthropic rides a wave of unprecedented demand, OpenAI navigates a more cautious environment. Yet, the impending IPO of SpaceX threatens to overshadow all, potentially reallocating vast sums of capital and redefining the investment priorities for high-net-worth individuals and institutional players alike. Investors should remain vigilant as these titans continue to shape the future of tech and finance. For more insights into these market shifts, explore our related Tech news.




