SpaceX Valuation
I came across a detailed valuation of SpaceX by Prof. Aswath Damodaran (the valuation guru at NYU Stern School of Business). It is a revistation of an initial valuation, attempted prior to the release of the IPO Prospectus.
Revisiting the SpaceX Valuation
As it is quite involved and I am not seriously considering investing in it, I asked my BA Claude to do a brief summary of the article, which I found helpful, so I thought to share here as several StrawPeople have indicated interest in this IPO.
This is an update to his April 2026 pre-prospectus valuation, which had pegged SpaceX at roughly $1.2 trillion using leaked/unofficial data ($15.5bn revenue, $8bn EBITDA). With the 277-page prospectus (filed 20 May 2026) now public, he splits the update into a mechanical "data" refresh and a more consequential "story" revision. His overarching framing: for a young company, value is driven by total market size and unit economics — found mostly in the footnotes — not by the reported bottom line.
The financials largely confirmed his estimates rather than surprising him:
He revises three drivers — target revenue, target margin, reinvestment — across the three businesses:

On the AI TAM, he flatly rejects the prospectus figure: it claims a $28tn total TAM with $26tn from AI — which he calls "borderline fantasy," likening it to gamified TAMs in the Uber ($5.7tn) and Airbnb ($3.4tn) IPOs. He uses ~$3–4tn for AI instead. The Colossus compute centre, leased to Anthropic at $1.25bn/month, is flagged as a near-term revenue/margin support (and a potential future conflict if xAI competes with Anthropic).
Reinvestment rises across the board — lower sales-to-capital ratios near-term for space and connectivity, and a surge for AI to fund the tripled revenue target. Total 2025 capex was ~$14bn and R&D ~$9bn, roughly double 2024.
He also lifts the discount rate, since the 10-year Treasury rose 4.20%→4.56%: initial WACC 8.02%→8.37%, steady-state 8.00%→8.25% (both near the US median).
Netting the offsetting changes (higher space margins and bigger AI market push up; slower near-term growth and the lower AI margin push down):
His stated fair-value range is $1.25–$1.35tn.
The prospectus made the story "bigger but also more volatile." His chief concern is overreach in AI — overestimating the market and xAI's competitive position, then committing tens of billions more capex on that misjudgement — a risk amplified because the voting structure leaves shareholders unable to restrain Musk.
As a self-described investor (not trader), he considers $1.8tn too rich and won't buy at the offer — but, citing post-IPO drops at Facebook and Uber, he won't short either, given unpredictable momentum. He pointedly argues that rejecting SpaceX because it loses money or trades at 100x revenue is "lazy"; the defensible bear case rests on disagreeing about market size, margins, or governance.
Disc: Not held and not intending to, other than via my passive US and global funds.
I came across this graph in a substack I was reading this morning. The dislocation between public and private markets is incredible, but SpaceX is in out of this world. [insert rocket emoji here]


The aerospace company confirmed the fireball as Ship 39 splashed down in the Indian Ocean was pre-planned.
Plan the vessel was not being reused!
The initial public offering (IPO) is set to be the largest in Wall Street history, with a target valuation of up to $1.75 trillion.
Lots of chatter lately on the anticipated announcement of a Space X IPO expected sometime very soon. Apparently it'll be the largest and most sort after IPO in history which suggests it maybe difficult to get hold of any shares on offer let alone at a reasonable price.
I've been buying a few shares in PE1 for at least some exposure if I miss out in the IPO. For anyone interested the following is an extract from PE1's most recent performance update:
SpaceX is currently PE1’s largest underlying portfolio company exposure, comprising almost 14% of the Trust’s private markets exposure.
Founded by Elon Musk in 2002, SpaceX is the world’s leading commercial space company, designing, building, and launching reusable rockets and spacecraft while operating one of the largest satellite broadband networks, Starlink.
The company’s launch business is the dominant player in the market and its satellite internet service, Starlink, has nearly 10,000 satellites in orbit and continues to gain customers at a high rate.
The company's strong positioning in launch and space has also created several new business opportunities, including potential data centres in space. In December, the company conducted a secondary share sale at a valuation of approximately US$800 billion, representing a doubling in valuation from the previous mark.
In February, SpaceX merged with xAI, consolidating all the AI-related infrastructure (including the Grok AI tool) into SpaceX ahead of a highly anticipated IPO that is expected to be at a much higher valuation.
The deal valued the combined entity at approximately US$1.25 trillion, which is in excess of PE1’s current valuation for SpaceX of US$800 billion.