SpaceX IPO: The $1.8 Trillion Question

SpaceX (SPCX) is headed for a public listing, and the valuation estimates are already drawing sharp lines between bulls and bears. Some Seeking Alpha analysts see the rocket builder worth $1.8 trillion at the IPO. That would make it one of the most valuable companies on the planet, bigger than Tesla on a market-cap basis.

The path to $1.8 trillion runs through Starlink's recurring revenue, Starship's launch economics, and the Mars cargo pipeline. The bears point to regulatory risk, competition from Blue Origin and China, and the fact that Starlink has yet to prove it can generate free cash flow at scale.

SA analyst Tom Gauthier wrote this week that the $1.8T figure is "aspirational, not analytical." He argued that enterprise value should be closer to $400 billion based on discounted cash flows from Starlink alone. Another analyst, Priya Ramesh, countered that SpaceX is better compared to a defense contractor like Lockheed Martin plus a telecom operator like T-Mobile, which justifies a premium.

The IPO itself is expected to be one of the largest in history. SpaceX raised $75 billion in a private round earlier this year, and the stock trades on Nasdaq under the ticker SPCX starting Friday, according to a previous AlphaScala report. That private round valued the company at roughly $180 billion. The $1.8T IPO valuation would be a 10x jump from that.

The real debate is about discount rates. A space company with 10-year contracts from NASA and the Department of Defense should command a low cost of capital. SpaceX is also a consumer-facing internet provider and a speculative exploration venture. Those three businesses carry very different risk profiles. A blended valuation that treats all revenue as equally certain is, in Gauthier's words, "a spreadsheet fantasy."

On the positive side, SpaceX has never missed a launch window for a paying customer. Starlink now has more than 2 million subscribers worldwide. Those are real numbers. The question is whether the market will pay a growth-stock multiple for a business that also builds rockets for the military. Defense contractors trade at 15-20 times earnings. Growth tech trades at 30-40 times. SpaceX's revenue mix will determine which multiple applies.

The IPO is expected to price later this month. Underwriters have not yet disclosed the final range. Until then, the $1.8 trillion number is a ceiling, not a floor. SA analysts are split. The only thing they agree on is that the debate is worth watching.