Prologue
The biggest IPO in history — last month
On 12 June 2026 SpaceX priced at $135, popped 19%, and now trades around $153 — about $2.0 trillion of equity, on $18.7bn of revenue and a $4.9bn net loss.
$2T
Predictcommit before you scroll
You are an analyst the morning after the IPO. The S-1 is on your desk; the tape says $153.
Is SpaceX at $153 cheap, about right, or expensive on the fundamentals — and if it's expensive, what would you have to believe?
107× sales · a $4.9bn loss · one founder, 82.4% of the vote
We build the valuation from the filing, segment by segment, and test your answer.
Part One
One filing, three businesses
After xAI merged in, SPCX reports three segments — exactly the cut a valuation wants.
Connectivity · Starlink
$11.4bn revenue, +$4.4bn operating income, 63% EBITDA margin. The cash engine.
Space · launch + Dragon
$4.1bn revenue, near break-even. Starship is the option. The franchise.
AI · xAI / Grok
$3.2bn revenue, −$6.4bn operating loss, $12.7bn capex. The swing factor.
Three businesses, three risk profiles, three discount rates. We value each, then add them up.
Evidencethe shape of the firm
Starlink is most of the revenue — and almost all of the profit
Starlink prints cash
2025 operating income +$4.4bn; 10.3m subscribers (Mar 2026), +105% YoY.
AI consumes it
2025 capex $12.7bn on $3.2bn of revenue; the IPO's first use of proceeds is "AI compute."
Net, the firm burns
OCF +$6.8bn, capex −$20.7bn → free cash flow −$14.0bn. Starlink funds the burn.
Part Two
How to value it
A sum-of-the-parts DCF: each segment at its own discount rate, summed, bridged to equity, tested against the price.
FCF = EBIT(1−τ) + D&A − capex − ΔNWC → EV = Σ FCFt/(1+r)t + TV/(1+r)10
NOPAT carries an NOL shield · terminal value floored at zero · ESG enters through r
Starlink 10-yr DCF, the anchor
Space base DCF + Starship as a real option
AI scenario-driven — the swing
Bridge ΣEV → equity ÷ 13.08bn shares
Three businesses, three discount rates
| Segment | β | ESG nudge | WACC | why |
|---|---|---|---|---|
| Connectivity | 1.00 | −20 bp | 8.98% | stable subs; digital-access (S) discount |
| Space | 1.30 | +30 bp | 10.99% | lumpy; launch emissions, debris (E) |
| AI | 1.55 | +20 bp | 12.18% | speculative; governance (G) premium |
The theory's two channels, in one table: Starlink's −20 bp is a taste discount (Pástor–Stambaugh–Taylor, JFE 2021); Space's +30 bp and AI's +20 bp are risk premia — carbon/externality (à la Bolton–Kacperczyk, JFE 2021) and governance. Small by design — hold that thought.
Part Three
Valuing the parts
Starlink the anchor; Space plus a Starship option; AI as the swing.
Evidencethe anchor
Starlink — the cash engine carries the firm
Subscribers grow into the tens of millions; ARPU keeps falling ($99 → $66 → …); margins expand toward a utility-like 70%. Discount at 8.98%, terminal growth 3%.
Worked live in class
Commit to your prediction first — we work the result together.
Evidencefranchise + option
Space — a near-break-even franchise, plus an option
The world's dominant launch provider — but most launches are internal (Starlink), at cost, so reported margins are thin. The upside isn't in today's Falcon.
Base launch business (DCF)
— sized live in class —
Starship — a real option
point-to-point, heavy lift, lunar/Mars cargo. Valued by scenario: $0 / $80bn / $250bn.
Predictthe swing factor
AI — tiny today, enormous if it works
$3.2bn revenue, losing $6.4bn at the operating line, $12.7bn of capex, against an issuer-claimed $26.5 trillion TAM. So we don't pretend to a point estimate — we run three scenarios.
Worked live in class
Commit to your prediction first — we work the result together.
Part Four
Adding it up
Sum the segments, bridge to equity, divide by 13.08bn shares — and compare to $153.
Evidencethe bridge · Base case
Worked live in class
Commit to your prediction first — we work the result together.
The football field
Worked live in class
Commit to your prediction first — we work the result together.
Part Five
What must you believe?
We can't reach $153 from the cash flows. So invert the question.
Predictturn the DCF around
Hold Starlink, Space and Starship at our marks. What must the market be assigning to the AI / moonshot bucket to justify $153?
Guess the number before you scroll — it lands larger than you'd think.
Evidencethe implied premium
Worked live in class
Commit to your prediction first — we work the result together.
Idearead the residual honestly
What it is
the value the price assigns to everything a DCF can't capture: Starship at scale, Mars, 100 TW of orbital compute, AI TAM capture.
What it is not
a precise AI valuation. It is a residual — it absorbs every conservative choice we made elsewhere.
A narrative stock is priced on the option, not the cash flows.
Part Six
Where ESG actually bites
We put real E, S and G factors into the discount rate. Predict: dollars, or cents?
S · taste (PST)
Starlink connects 3bn unconnected → lower cost of capital (−20 bp).
E · risk (à la BK)
launch emissions, NEPA, orbital debris / Kessler → premium (+30 bp).
G · governance risk
dual-class control, key-person, related parties → premium (+20 bp).
Verdictdollars, or cents?
Worked live in class
Commit to your prediction first — we work the result together.
Part Seven
The governance overlay
One founder, 82.4% of the vote, and a pay award that vests on Mars.
| Class | shares | votes/share | voting power |
|---|---|---|---|
| A (public) | 7.38bn | 1 | 11.5% |
| B (Musk & insiders) | 5.70bn | 10 | 88.5% |
| Elon Musk — total voting power | 82.4% |
Musk is CEO, CTO and Chairman, with ≈46% of the economics but 82.4% of the vote.
The pay award: vest on Mars
1,000m Class B shares
vest on 15 market-cap milestones and a permanent Mars colony of ≥1,000,000 people.
302m Class B shares
vest on 12 milestones and non-Earth data centres at 100 TW/yr of compute.
≈ 1.30bn shares (~9% dilution) — but only in states of the world where SpaceX is worth multiple trillions. The dilution is contingent on the very upside that triggers it.
Concentration
82.4% control means minority holders cannot discipline strategy, capital allocation, or the $20.2bn of related-party xAI↔Valor compute leases.
…vs. conviction
the same control let SpaceX make decade-long, capital-destroying bets — reusable rockets, Starlink — a quarterly market would have killed.
The G in ESG is not a checklist here — it is whether you trust the one person who controls the moonshot.
Synthesis
What SpaceX teaches about valuation
Sum-of-the-parts disciplines a story
three segments, three discount rates — cash engine, franchise, swing factor — beats one blended guess.
When DCF and price diverge sharply, invert
the reverse DCF turns "it's expensive" into a falsifiable claim about the moonshot.
ESG lives somewhere specific
basis points in the discount rate; first-order in the scenarios and in governance.
Governance is priced
82.4% control is both the risk and the reason the bets got made.
Ideadiscussion
Are you the analyst, or the market?
Value AI by DCF at all — or only as an option?
Does 82.4% control deserve a discount, or a premium?
Is the rest of SpaceX a giant call option on Mars?
Bring your number. We rebuild the model live and see whose assumptions survive.