SpaceX IPO Prices at $1.75 Trillion. Math Suggests Otherwise.

SpaceX priced its initial public offering at $135 per share on Thursday, raising $75 billion on the sale of 555.56 million shares and instantly vaulting into the pantheon of absurdly valued companies. The $1.77 trillion valuation makes SpaceX the seventh most valuable U.S. company, ahead of Tesla. It is also the largest stock debut in history, breaking Saudi Aramco's 2019 record by a margin so wide you could launch a Starship through it.

The stock gained 19 percent on its first trading day. This is where we pause and ask the question that separates markets from casinos: what exactly justified this?

Start with the raw multiples. SpaceX trades at 67 times sales. Nvidia, the company that trained the artificial intelligence models reshaping technology, trades at roughly 22 times sales. This means the market is willing to pay three times as much per dollar of SpaceX revenue as it does for Nvidia revenue. The reasoning, apparently, involves Mars.

Let's examine what SpaceX actually is. The company operates three segments. Starlink, the satellite internet business, is genuinely profitable and genuinely growing. Revenue surged 96 percent to $7.6 billion, which is real money solving a real problem. The Space segment, which handles launch services, is also profitable and funds Starship development. Then there is AI, dominated by xAI, where the company lost money last year and continues to burn capital at rates that would make venture capitalists weep into their spreadsheets.

Morningstar's analysts looked at this structure and concluded SpaceX is "significantly overvalued." Their estimate: $780 billion. That implies the market has priced in roughly 125 percent of upside beyond what professional equity analysts believe the company will deliver. The gap between IPO valuation and Morningstar's assessment is $970 billion—nearly the entire market cap of Tesla.

The IPO itself was mechanically impressive. The book ran five times oversubscribed, meaning demand exceeded supply by 400 percent. MSCI announced it would begin adding SpaceX to its portfolio starting June 13 for index-tracking ETFs controlling between $15 and $20 trillion in assets. That creates the possibility of $35 billion to $50 billion in index-tracking money flowing into the stock. This is the modern version of the emperor's clothes. When you have that much passive capital obligated to buy something, price discovery becomes theoretical.

Consider context. SpaceX raised $75 billion in this offering alone. Every other 2026 IPO combined raised $36 billion. The company now ranks seventh among U.S.-listed firms by market cap despite losing money last year while other mega-caps generate earnings that dwarf SpaceX's entire revenue.

This is not an argument that SpaceX is a bad company. Starlink is impressive. The launch business is real. Reusable rockets changed the cost structure of space access. Elon Musk has an actual track record of building things that seemed impossible. But valuation is not opinion. It is the price you pay today versus the cash flows you receive tomorrow. At $1.75 trillion, SpaceX is priced for a future where Starlink becomes ubiquitous, xAI becomes profitable at scale, and Mars colonies generate revenue. These are not inevitable outcomes. They are possibilities.

The 19 percent first-day gain tells us something important: the IPO was underpriced relative to what traders were willing to pay. This happens when demand is abundant and the underwriting syndicate plays it conservative. It also happens when companies are priced on aspiration rather than cash flows. In 20 years watching traders, I have seen this pattern before. The stock goes up. Analysts revise estimates upward. More money flows in. Then something breaks. A growth rate misses. A segment disappoints. Reality reasserts itself over narrative.

SpaceX may well be worth more than $1.75 trillion someday. The technology is real. The addressable market is vast. But pricing the largest IPO in history at 67 times sales requires assuming that this time is different. Markets have heard that argument before. It rarely ends the way the presentation deck promised.