SpaceX is reportedly preparing a secondary share sale that could value Elon Musk’s rocket company at $800 billion, according to the Wall Street Journal. This would double its most recent $400 billion valuation and surpass OpenAI, making SpaceX the most valuable private company in the United States.
The scale of the offering has not been disclosed, and SpaceX has not provided a comment.
Mega-Valuations in Private Markets
The potential $800 billion valuation reflects the growing trend of mega-valuations in private markets, where startups achieve public-market-scale valuations without going public. Companies like OpenAI, currently valued at $500 billion, and Anthropic, which surged to $350 billion after major investments from Microsoft and Nvidia, highlight how secondary sales provide liquidity for investors while avoiding the scrutiny of quarterly earnings reports.
These secondary offerings allow founders and early investors to cash out while keeping companies private and maintaining operational flexibility.
SpaceX’s Market Dominance
Founded in 2002, SpaceX dominates commercial rocket launches and operates Starlink, its satellite internet service with over 8 million customers worldwide as of November 2025. The company’s dual focus on space exploration and global connectivity has made it a key player in both commercial and government aerospace sectors.
Elon Musk’s vision for SpaceX combines ambitious technological goals, like reusable rockets, with commercial viability, as evidenced by Starlink’s rapid expansion and growing customer base.
Why This Matters
If the secondary sale goes through, SpaceX will set a new benchmark for private company valuations in the U.S., surpassing tech and AI rivals. It also underscores the increasing value of space-related ventures in the private sector, as investors anticipate growth in satellite internet, commercial launches, and interplanetary exploration.
Mega-valuations like this highlight the intense competition among private companies in technology and space, signaling a new era where innovation and market dominance can occur outside public markets.
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