Billionaire investor Bill Ackman has expressed strong confidence in SpaceX’s Starlink satellite internet business, describing it as a “near monopoly” in the rapidly expanding global satellite broadband market. Despite his favorable view of the company’s competitive position and admiration for CEO Elon Musk, Ackman says he is not prepared to purchase SpaceX shares at current valuations.

The comments underscore a growing divide among investors between enthusiasm for SpaceX’s long-term prospects and concerns that its market valuation already reflects much of its future growth potential.

Ackman Sees Starlink as a Market Leader

Ackman highlighted Starlink as one of SpaceX’s strongest competitive advantages, noting its dominant position in global satellite internet services.

He also referenced Wall Street’s long-standing belief that betting against Elon Musk has historically been a difficult strategy, acknowledging Musk’s track record of building disruptive technology businesses across multiple industries.

According to Ackman, Musk remains one of the most accomplished entrepreneurs and technologists of his generation.

Valuation Remains the Biggest Obstacle

Despite praising the business, Ackman believes SpaceX’s valuation makes the stock difficult to justify as an investment today.

Based on the company’s reported 2025 revenue of approximately $18.7 billion and a market capitalization near $1.49 trillion, SpaceX trades at an estimated price-to-sales ratio of roughly 79.

That multiple stands well above many of the world’s largest technology companies. By comparison, even high-growth artificial intelligence leader Nvidia trades at a significantly lower revenue multiple.

Ackman argued that companies priced for near-perfect execution leave little room for operational setbacks or slower-than-expected growth, increasing investment risk.

Limited Predictability Also a Concern

Another factor influencing Ackman’s decision is the company’s financial visibility.

SpaceX has yet to report earnings as a newly public company, leaving investors with limited information regarding its profitability, cash flow generation, and long-term earnings profile.

Ackman noted that Pershing Square generally favors businesses with highly predictable financial performance, making SpaceX less suitable for the firm’s investment approach at the current stage of its public market history.

Long-Term Interest Remains Possible

Although Ackman ruled out buying SpaceX shares for now, he stopped short of dismissing the company as a future investment opportunity.

He suggested that if the valuation becomes more attractive and the company’s financial performance becomes more predictable over time, SpaceX could eventually meet Pershing Square’s investment criteria.

As SpaceX matures as a publicly traded company, upcoming earnings reports will likely provide investors with greater insight into its operating performance and capital requirements.

Outlook

SpaceX continues to attract significant investor attention thanks to Starlink’s leadership in satellite communications and the company’s broader ambitions in launch services, artificial intelligence, and space infrastructure. However, Bill Ackman’s comments highlight that even highly regarded businesses are not automatically attractive investments when valuations become stretched. As SpaceX begins establishing a public financial track record, investors will closely watch whether execution can justify its premium valuation.