SpaceX IPO Valuation: What $1.8 Trillion Buys, From Starlink to xAI

On May 29, 2026, SpaceX cut its IPO target from above $2 trillion to “at least” $1.8 trillion (Bloomberg). The roadshow opened June 4 at a fixed $135 per share, putting implied equity value at about $1.77 trillion (CNBC). Aswath Damodaran, after reading the prospectus, valued the equity at roughly $1.25 trillion (Damodaran). The half-trillion-dollar gap between those two numbers is what this piece is about.

The non-obvious part is that bulls and bears largely agree on the core businesses. ARK’s $1.75 trillion case explicitly excludes orbital data centers (ARK / Cathie Wood). Damodaran’s $1.25 trillion base case includes a modest xAI option. Strip both back to Launch plus Starlink, and the numbers converge. The IPO premium above intrinsic value is therefore one isolated bet: that xAI plus space-based compute becomes a real business, not an open-ended capex sink.

The bull case

Starlink is the engine. The S-1 reports about 10.3 million subscribers as of March 2026, roughly double the prior year. Monthly ARPU fell from $99 in 2023 to $66 in 2026 (The Information), and scale has been offsetting the price erosion. 2025 connectivity revenue reached $11.4 billion with $4.4 billion of operating income (The Motley Fool).

ARK’s Brett Winton argues each Starship launch adds roughly 60 Tbps of network capacity, so the connectivity moat compounds mechanically (Yahoo Finance). Washington University’s endowment turned an early $50 million stake into more than $1 billion (Bloomberg), evidence that long-horizon holders were paid for the volatility.

Quilty Space’s bottom-up model projects 2026 revenue near $20 billion with around $14 billion of EBITDA, in line with hyperscaler comparables before any xAI credit (The Motley Fool). On the demand side, S&P Dow Jones Indices declined to fast-track SpaceX into the S&P 500 on June 5, 2026 (CNBC). That matters: the deepest pool of passive AUM (roughly $10 trillion) sits out, leaving most of the post-IPO bid in the hands of investors who are actively choosing the price.

The bear case

Damodaran’s $1.25 trillion is a sum-of-the-parts model at about an 8.25% cost of capital (Damodaran). Against the $1.77 trillion print, the premium is roughly 40%. Morningstar’s Nicolas Owens goes further, publishing a $780 billion fair value, roughly 55% below the IPO ask (CNBC), citing xAI absorption and concentrated voting control as material drags (TradingKey).

The S-1 sizes the total addressable market at $28.5 trillion. AI accounts for $26.5 trillion of that, or 93% (PYMNTS). The connectivity TAM splits into $870 billion broadband and $740 billion mobile (Fortune). The AI line includes $22.7 trillion of enterprise applications. Damodaran’s commentary anchors realistic AI markets in the low single-digit trillions, and the gap between the prospectus TAM and a defensible market is most of the price premium.

Adoption data complicates the AI story. A Reuters review of federal AI inventories counted 3 of more than 400 documented government use cases involving xAI/Grok, versus 234 for OpenAI and 33 for Gemini (Yahoo Finance). Federal procurement is one slice of the AI market, but it is the slice where the customer publishes its picks.

Multiples compound the discomfort. At $135 per share, SpaceX is asking close to 100x trailing sales. Palantir, the prior public-market high-water mark, trades near 70x trailing and around 45x 2026 estimates (The Motley Fool). Musk retains roughly 85% of voting power through Class B super-voting shares (InvestingLive), so even if the AI thesis disappoints, public shareholders have limited governance tools to constrain further capex.

What the data shows

Segment	2025 Revenue	2025 Operating Result
Launch (Space)	~$4.0B	-$657M
Connectivity (Starlink)	$11.4B	+$4.4B
xAI (AI)	$3.2B	-$6.4B

Source: SpaceX Form S-1; segments via The Motley Fool.

Group revenue was $18.7 billion in 2025, up 33% year-over-year, on a $2.59 billion operating loss and $4.94 billion net loss (Morningstar). Q1 2026 growth slowed to 15% year-over-year on $4.7 billion of revenue, and Space-segment revenue fell 28% as government launch timing slipped (PitchBook). One business is profitable and scaling. One is erratic and government-dependent. One is spending billions per year against a market whose realistic size remains contested.

What would change our mind

• AI demand evidence beyond the S-1 TAM table: enterprise contracts at scale, federal adoption shifting toward Grok, or a credible path to xAI gross-margin parity with hyperscaler peers.
• Starlink gross margins through 2027 holding above the ~48% the S-1 implies, validating that subscriber growth is not buying revenue at the cost of unit economics.
• Governance reform: a sunset on Class B super-voting shares, or a binding capex cap on xAI absorption while losses persist.
• A post-IPO drawdown where intrinsic and traded values converge, removing the index-mechanics premium from any entry point.

What this does not tell you

S-1 figures are reported, not yet seasoned by years of audited public-company disclosure, and Q1 2026 numbers may be restated. Damodaran himself describes his $1.25 trillion as a relative, disciplined estimate, not a price target. ARK’s $1.75 trillion includes optionality (orbital compute) that no comparable public business has monetized. The federal AI adoption gap is one data slice in a procurement landscape that includes enterprise, consumer, and international deployments not measured by the same inventory. Forge Global secondary marks have been moving on rumor as much as on filings (Forge Global).

The Nasdaq index-inclusion changes (fast-entry after 15 trading days, a 3x float multiplier) are real (Nasdaq methodology), but the size of resulting passive buying is an estimate, and the S&P denial materially shrinks the captive-demand thesis. Matt Levine’s framing of price-insensitive demand still applies to the Nasdaq-100 and Russell tracks (Bloomberg Opinion), just less than the earliest “forced buyer” arguments implied.

FAQ

What is SpaceX’s current IPO valuation?

At a $135 fixed roadshow price, the implied equity value is about $1.77 trillion. SpaceX is offering roughly 555.6 million shares for around $75 billion in proceeds, on a target of “at least” $1.8 trillion after cutting from above $2 trillion in late May 2026.

Why does Damodaran see the IPO as overpriced?

His sum-of-the-parts model values the equity near $1.25 trillion at an ~8.25% cost of capital. Most of the gap to $1.77 trillion comes from the prospectus implying a roughly $26 trillion AI market, which his work treats as several times too large.

What role does xAI play in the valuation?

xAI generated $3.2 billion in 2025 revenue against about a $6.4 billion operating loss. Bulls treat orbital compute and Grok scaling as free optionality on top of Launch and Starlink. Bears note xAI is the smallest division and the largest cash burn.

How do Nasdaq’s index changes affect the IPO?

A May 2026 methodology update lets top-40-by-cap newly listed companies enter the Nasdaq-100 after 15 trading days and applies a 3x float multiplier to weighting. S&P Dow Jones Indices declined to make similar changes for the S&P 500, removing that pool from any fast-track passive bid.