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SPCX · Forward model · Starlink Mobile · Bull case

What has to happen in Starlink Mobile

Model as of

This page changes Starlink Mobile inside the complete SPCX model. Every other vertical, corporate programme and valuation assumption stays in the selected portfolio case.

SPCX forward model
Horizon
Consolidated fair value $467.81 all other verticals held in this portfolio case
Final-quarter revenue $2.52B 2% of company revenue
Explicit segment contribution $3.39B EBITDA less segment capex, before corporate items

ARPU stabilises on enterprise mix and direct-to-cell scale, Starship reaches high cadence and low cost, AI capacity scales toward multi-GW with pricing power held. Origin converts GitHub's reliability year into migrations and takes roughly half of GitHub's book — worth about $4B a year at our estimate of its current run rate — on top of Cursor's own seat growth, reaching about $18B a year by 2031. Model layer reaches roughly 30% of the pool - Grok at frontier quality, cheaper and faster, taking a third of the market from the incumbents.

Starlink Mobile

Basis quarter$0
Final quarter$2.52B
Final revenue mix2%

The enhanced direct-to-handset service, not the messaging bolt-on that exists today. It needs the V2 Mobile satellites - ~50 per Starship flight, roughly 100x the data density - and the EchoStar spectrum before there is enough capacity to sell rather than to bundle. That makes it a 2028 business with a 2026 announcement, and the gap is the whole risk.

Last four quarters
2025 Q3 $0 Estimated
2025 Q4 $0 Estimated
2026 Q1 $0 Estimated
2026 Q2 $0 Reported
MNO wholesale revenue share on the enhanced tierPaid voice and data plans in partner marketsDirect retail on EchoStar spectrum (optional, unmodelled)
Subscribers 100K 0.0% of a 900.0M addressable base 100K on the early direct-to-cell tier. This is a handset base, so its ceiling is a different order.
Addressable subscribers 900.0M the S-curve ceiling 900M handsets on partner carriers in markets with real coverage gaps — devices, not households.
Net adds 1.0M/qtr ramping toward 9.0M/qtr, throttled as the base approaches the TAM 1M a quarter at launch. Carrier partnerships, not satellite capacity, gate the early ramp.
Net-add ceiling 9.0M/qtr what supply can deliver at full rate 9M a quarter once the partner base is live. Adds ramp toward this rather than compounding at 12%.
ARPU $6.00/mo drifting +1.0% per quarter, floor $0.00 $6 a month: above the light tier, far below the $66 dish ARPU. Still a wholesale slice, not a retail price.
Non-subscriber revenue $0/qtr growing 0.0% per quarter Zero. Any direct retail on EchoStar spectrum would land here; none is modelled.
Starlink Mobile

Latest: $2.52B (2031Q2E)

Period Value
2025Q1 $0.00
2025Q2 $0.00
2025Q3 $0.00
2025Q4 $0.00
2026Q1 $0.00
2026Q2 $0.00
2026Q3E $0.00
2026Q4E $0.00
2027Q1E $0.00
2027Q2E $0.00
2027Q3E $0.00
2027Q4E $0.00
2028Q1E $45M
2028Q2E $109M
2028Q3E $194M
2028Q4E $301M
2029Q1E $428M
2029Q2E $577M
2029Q3E $746M
2029Q4E $935M
2030Q1E $1.15B
2030Q2E $1.38B
2030Q3E $1.63B
2030Q4E $1.90B
2031Q1E $2.20B
2031Q2E $2.52B

Assumptions & reasoning

  • Modelled on monetised users x wholesale ARPU because the economics are a revenue share, not a price SpaceX sets. Growth comes from carriers signing, not from users churning in and out.
  • Zero revenue for six quarters is the point of this vertical. The light service already earns money and is counted in Starlink; what is modelled here is only the step-change the V2 satellites and the EchoStar spectrum unlock, and none of it can be sold before end-2027.
  • Margin glides 40% to 68% - higher than the dish business, because the incremental cost of a direct-to-cell user is close to zero once the satellites are up. Capex intensity starts at 140% while the dedicated V2 fleet is built and falls to 25%.
  • Reaching roughly 70M monetised users by 2031 sounds aggressive against ~22M light actives today, but the constraint is carrier packaging rather than coverage, and coverage is already near-global. The load-bearing assumption is ARPU: at $3 rather than $6 this vertical is worth half, and the carriers set that number, not SpaceX.
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