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⚠ Cadence Concentrates FragilityModerate threat

SpaceX (SPCX) — threat to the moat

Fewer, heavier flights mean a single lost mission costs more lift than it did a year ago, with fewer remaining flights to make it up.

Fewer, heavier flights put more of the quarter on each one.

Space segment Adjusted EBITDA ($M)+$674Q3 2025-$205Q2 2026+$357Q3 2026+$8039M 2025-$1999M 2026SpaceX Q3 2026 results release; magnitudes plotted, signs in the labels
A manifest of three dozen missions has no smoothing: the segment's cash profit swung from plus $674 million to minus $205 million and back.

The fragility on this page used to be about commonality: one vehicle family, one fault, everything stops. The quarter added a second kind, and it is arithmetic rather than engineering. With 35 launches carrying 13.6 tons each instead of 44 carrying 11.91, a single lost mission now costs more lift than it would have a year ago, and there are fewer flights left in the quarter to make it up. Concentration per flight is rising while the number of flights falls.

How little slack sits behind that is visible in the segment's cash profit. Space Adjusted EBITDA was $674 million in the September quarter of 2025, minus $205 million in the June quarter of 2026, and $357 million this time; across nine months it was minus $199 million against plus $803 million2. A business whose quarterly cash profit swings that far on a manifest of three dozen missions has no smoothing mechanism at all. Launch services revenue says the same thing: $1,000 million, then $648 million in June, then $1,130 million3.

Starship does not fix this yet. For now it adds to it. One orbital flight has happened, and on that flight an engine shut down during ascent and the profile was cut from a planned ten hours to about three4. A vehicle with a longer interval between flights concentrates still more in each one.

What will show it first is the quarter-to-quarter swing in the segment's Adjusted EBITDA5. A company flying often enough averages its bad days away. One flying 35 times a quarter, with a successor that has flown to orbit once, carries its bad days in full — and a quarter containing a lost mission would show that in the accounts in a way none of the last three have.

References
  1. Moat Explorer calcWith 35 launches carrying 13.6 tons each instead of 44 carrying 11.9, a single lost mission now costs more lift than it would have a year ago, and there are fewer flights left in the quarter to make it up.
    Moat Explorer calculation from SpaceX's Q3 2026 results release and market data — Q3 revenue mix Space $1,767M / Connectivity $5,248M / SI $7,560M of $14,575M = 12.1% / 36.0% / 51.9% (Q2: $962M / $4,291M / $2,561M of $7,814M = 12.3% / 54.9% / 32.8%); sequential revenue growth 14,575 / 7,814 - 1 = 86.5%; nine-month growth 27,083 / 13,714 - 1 = 97.5%; Q4 2025 revenue 18,674 - 13,714 = $4,960M and trailing-twelve-month revenue 4,960 + 27,083 = $32,043M; Q4 2025 net (4,937) - (2,590) = $(2,347)M and trailing net (2,347) + (413) = $(2,760)M; Q4 2025 income from operations (2,589) - (1,216) = $(1,373)M and trailing (1,373) + 705 = $(668)M; market capitalisation 13,579m shares x $147.79 = $2,007bn and price to trailing sales 2,007 / 32,043 = 62.6x; Q3 operating margin 2,791 / 14,575 = 19.1% and Adjusted EBITDA margin 8,809 / 14,575 = 60.4%; non-operating contribution to net income 4,404 - 2,791 = $1,613M (interest income 873 + other income 1,025 - interest expense 675 + tax benefit 390); capex as a share of revenue 19,593 / 14,575 = 134.4% and 48,069 / 27,083 = 177.5%; nine-month free cash flow 13,097 - 48,069 = $(34,972)M; SI share of capex 16,444 / 19,593 = 83.9% and 39,995 / 48,069 = 83.2%; Connectivity share of group income from operations 2,367 / 2,791 = 84.8%; Space research and development growth 1,225 / 849 - 1 = 44.3%; Connectivity operating margin 2,367 / 5,248 = 45.1% (Q2 1,656 / 4,291 = 38.6%; Q3 2025 1,190 / 3,097 = 38.4%); enterprise and government share 2,127 / 5,248 = 40.5% (Q2 42.1%, Q3 2025 35.9%); mass to orbit per launch 476 / 35 = 13.6 t (Q2 485 / 38 = 12.8 t; Q3 2025 525 / 44 = 11.9 t); days between launches 92 / 35 = 2.6; advertising share of SI 538 / 7,560 = 7.1% (Q3 2025 454 / 813 = 55.8%) and nine-month advertising 1,248 / 1,323 - 1 = -5.7%; SI income from operations before the Cursor charge 431 + 1,217 = $1,648M and SI operating margin 431 / 7,560 = 5.7%; cash and marketable securities 51,294 + 38,561 = $89,855M; total debt 2,698 + 36,146 = $38,844M of which related party 2,181 + 10,716 = $12,897M; net cash 89,855 - 38,844 = $51,011M; deferred revenue 10,784 + 6,736 = $17,520M against 6,111 + 6,005 = $12,116M, up 44.6%; goodwill increase 48,423 - 11,809 = $36,614M and goodwill plus intangibles 54,777 / 254,045 = 21.6% of assets; property, plant and equipment 89,483 / 42,602 - 1 = 110.0%; Cursor shares 391.0m of 13,579m = 2.88% at an implied 60,000 / 389.289 = $154.13 a share; Cursor revenue 608 / 47 x 365 = $4,722M annualised, so 60,000 / 4,722 = 12.7x; diluted shares 12,475 / 2,941 - 1 = 324%; the September quarter was 14,575 / 32,043 = 45.5% of trailing revenue — Q3 2026 — quarter ended 30 September 2026 · publ. 20 October 2026 · source ↗
    Method: The operands and the arithmetic are set out in full in the source line.
  2. ReportedSpace Adjusted EBITDA was $674 million in the September quarter of 2025, minus $205 million in the June quarter of 2026, and $357 million this time; across nine months it was minus $199 million against plus $803 million.
    SpaceX Q3 2026 results release (Form 8-K exhibit 99.1, 20 October 2026) — segment table: revenue, income from operations, Adjusted EBITDA and capital expenditure by segment — Q3 2026 — quarter ended 30 September 2026 · publ. 20 October 2026 · source ↗
  3. ReportedLaunch services revenue says the same thing: $1,000 million, then $648 million in June, then $1,130 million.
    SpaceX Q3 2026 results release (Form 8-K exhibit 99.1, 20 October 2026) — Space segment operating and financial data and business highlights — Q3 2026 — quarter ended 30 September 2026 · publ. 20 October 2026 · source ↗
  4. ReportedOne orbital flight has happened, and on that flight an engine shut down during ascent and the profile was cut from a planned ten hours to about three.
    GPB (Associated Press) — Starship Flight 14: one of the ship's six engines failed during ascent and the planned ten-hour flight was cut to three hours — Flight 14, 28 September 2026 · publ. 28 September 2026 · source ↗
  5. ReportedWhat will show it first is the quarter-to-quarter swing in the segment's Adjusted EBITDA.
    SpaceX Q3 2026 results release (Form 8-K exhibit 99.1, 20 October 2026) — segment table: revenue, income from operations, Adjusted EBITDA and capital expenditure by segment — Q3 2026 — quarter ended 30 September 2026 · publ. 20 October 2026 · source ↗
Sources
Generated October 21, 2026