What This Means:
Vertical integration is no longer a strategy story in commercial space — it is a valuation story. The three most instructive deal comps of the past 12 months show a measurable premium assigned to companies that control more of their own supply chain. Investors who do not have a framework for quantifying that premium are mispricing the sector.
When Rocket Lab closed its $155.3 million acquisition of Mynaric AG on April 14, most coverage framed it as a laser communications story, a technically sophisticated company buying technically sophisticated hardware. That framing is not wrong, but it misses the more durable signal. The Mynaric deal was the third acquisition Rocket Lab has completed in roughly 24 months to expand what it controls internally, following the Geost optical payload acquisition that pushed Space Systems to roughly 74% of the company’s total revenue. Each deal added a new row to the same spreadsheet: the bill of materials Rocket Lab no longer has to source from someone else.
The market noticed. Rocket Lab currently trades at a trailing price-to-sales (P/S) ratio of approximately 72x against $601.8 million in 2025 revenue. That multiple is not a launch company multiple. It is not even a pure-play satellite bus multiple. It is a vertically integrated space and defense prime multiple, one that reflects a $1.85 billion backlog growing 73% year-over-year, anchored by the $805 million Space Development Agency (SDA) Tranche 3 award, and increasingly underpinned by internal component production that expands gross margin as the revenue mix shifts. The question for investors is not whether vertical integration is valuable. The evidence is sitting right there in the ticker. The question is how to score it systematically, and what the current deal comps say about where the premium breaks.
Defining the VI Score Framework
A Vertical Integration (VI) score, as a practical investor tool, measures what percentage of a company’s total addressable cost structure it controls internally rather than sourcing externally. It is not a binary “integrated or not” but a spectrum that runs from pure assemblers at the low end to fully closed-loop producers at the high end.
For commercial space companies in 2026, five layers of the stack are the most relevant to score: launch vehicle or propulsion, spacecraft bus, payload/sensor, communications (including inter-satellite link terminals), and ground segment software. A company that controls all five scores a 5/5. A company that buys everything externally scores 0/5. The actual investment signal lives in the delta, companies moving from 2/5 to 4/5 in real time, through acquisitions, internal development programs, or joint ventures, are repricing faster than the market typically recognizes before the move is complete.
Scoring methodology note: Each of the five stack layers is treated as a full point (1/5) when a company owns and operates the capability at production scale. A half-point (0.5/5) is assigned when a capability is under active internal development, has been acquired but not yet integrated into the production cost structure, or is controlled through a majority-owned joint venture. A score of zero is assigned for capabilities fully sourced from third-party vendors. Fractional scores are, by nature, interpretive rather than mechanical, readers applying this framework to unlisted companies should document their scoring rationale and revisit it at each new reporting period as integration progresses.
Rocket Lab: The 3/5 to 5/5 Trajectory
Twelve months ago, Rocket Lab was credibly a 3/5 company: it controlled launch (Electron, in mature operations), spacecraft bus (through Photon), and was building toward Neutron. Propulsion was partially internal. Payloads and optical communications were sourced externally.
The Geost acquisition brought electro-optical sensors in-house. The Mynaric AG acquisition brought laser optical communications terminals, the critical data link for large constellations and SDA architectures, directly onto Rocket Lab’s balance sheet. The newly developed Gauss electric thruster added a fifth capability: propulsion no longer depending on a third-party vendor for Photon builds. Rocket Lab’s effective VI score as of Q2 2026 sits at approximately 4.5/5, reflecting that Mynaric’s laser terminal production is acquired but not yet fully absorbed into the Space Systems cost structure; the half-point gap closes as integration completes. The market is pricing a 5/5 trajectory into the $74-per-share range, with analyst models suggesting a fair value of approximately $85 based on 2027–2028 SDA revenue conversion and margin expansion driven by that integration.
The case for the 72x trailing P/S multiple rests on a specific and testable sequence of events: SDA contract conversions already contractually committed, combined with gross margin improvement that becomes structurally achievable when the most expensive components, optical payloads, laser terminals, are produced internally rather than purchased at a supplier’s margin. That logic holds if the assumptions hold. The bull case depends on at least three conditions remaining intact: Mynaric’s Munich-based engineering operations are successfully absorbed without prolonged workforce friction or R&D cost drag; SDA Tranche 3 revenue conversion stays on the contracted schedule through 2027–2028; and no new entrant in optical communications terminals, including Airbus-affiliated programs or venture-backed competitors, materially erodes Mynaric’s sole-source positioning inside the SDA architecture. Investors who find those conditions credible will find the multiple defensible as a forward-pricing instrument. Investors who assign meaningful probability to any of the three failure modes should model a compression scenario toward the 40–50x range, where a high-growth space prime with a partially integrated stack would more typically trade absent full conviction on integration execution.
The risk most immediately visible in the public record is Neutron. The launch vehicle’s schedule has shifted into late 2026 or 2027, which delays the revenue base against which the current multiple must eventually be grown into. That is a timing risk, not a structural one, but timing risk at 72x P/S carries real consequences for near-term holders if quarters disappoint.
The VI Score Matrix, deal comp multiples, and five decision questions for investors and C-suite executives are in the full piece — including the three conditions that must hold for Rocket Lab's 72x multiple to be defensible, and the single most observable near-term signal for whether the Mynaric integration thesis is on track.
