At the top of the space graph, the clock changes
At the apex of the space chain sit the prime contractors that sign directly with governments: RTX, Northrop Grumman, L3Harris, Boeing and Airbus. As these five join the map as nodes (the companies this wiki tracks), the US and European prime layer of the space graph closes. Moog's largest disclosed customer (Boeing, 10%), the satellite manufacturer behind SES and Viasat (Boeing), OneWeb's builder (Airbus), and Firefly's launch customer (L3Harris) and investor (Northrop) are all now solid lines. The money in the space chain can finally be traced end to end. Overlay the returns, and this layer's clock plainly runs differently from the tiers below. How this prime layer came onto the map was covered in The launch-tier paradox.
The re-rating stops at the primes
Recall the propagation across the space chain: satellite operators (Iridium, Eutelsat) re-rated first, the data layer (Planet Labs) followed, and it reached propulsion and components (Moog up four straight years, Avio's two-year rally). At the top of that chain, it goes no further.
Northrop Grumman is the sharpest counterexample. Space Systems is about 26% of its revenue ($10.8B), the highest space share of the five primes. Yet it sat out the heart of the space re-rating at -12.8% in 2023 and +1.9% in 2024, and its +23.6% in 2025 was last among the defense trio. Boeing is more extreme: it builds SES's 13 O3b mPOWER satellites and the ViaSat-3 buses, but against $89.5B of revenue satellites are noise, so the stock swung on the door-plug crisis (-32.1%) and delivery recovery (+22.7%), not on space.
The reason is structural. For a pure-play, space revenue is all there is, so the cycle becomes the stock. For a prime, space is one segment of a huge conglomerate and the signal dilutes. While the lower layers' re-ratings printed double and triple digits at the pure-plays, the primes did not lag because space was bad. Space is simply too small to move their stocks.
The primes run on a budget clock
That does not mean the primes did not move. They moved on a different clock. Northrop's best year was 2022 (+43.0%), the year the Ukraine war broke out. RTX (+61.4%) and L3Harris (+42.3%) had their year in 2025, when European rearmament and missile and munitions ramps showed up in earnings. RTX re-rated two years running once its self-inflicted GTF recall cleared in 2024.
In the language of Many clocks, the prime tier's clock is the budget cycle, not the space cycle. Primes rise when a war starts, allies rearm, or missile inventories run dry. When satellite demand rises, what rises is the pure-plays below them. They share a "space and defense" label; the clocks run apart.
Money flows downhill: primes are the gateway
With the graph closed, the money path is complete. Budgets enter from the US government (Northrop 84%, L3Harris 75%, RTX 38%) and European governments (Airbus Defence and Space, 18% of group) and pass through the primes to Moog (Boeing its 10% customer), Karman (supplying Northrop and other primes), L3Harris Aerojet (solid rocket motors for Lockheed and RTX) and Firefly (L3Harris launch contract, Northrop investment). The component and propulsion re-rating came from exactly this budget handed downward. The primes are gateways that pass budgets down without re-rating themselves; the leverage accrues to suppliers holding bottlenecks.
Solid rocket motors are the archetypal bottleneck: a US duopoly of L3Harris (Aerojet) and Northrop, where Raytheon's missile ramp becomes revenue for both. The primes being each other's suppliers and customers (RTX, L3Harris, Northrop, Lockheed) appears to let one budget release circulate several times within the tier.
And once again, SpaceX appears even at this layer: after retiring Antares, Northrop launches its Cygnus cargo ships on Falcon 9. After the satellite operators, the data companies and the rocket companies, even a big-three US prime is SpaceX's customer at the launch bottleneck.
The exception: duopoly asymmetry
Boeing and Airbus run on a third clock, the commercial duopoly's. Airbus has compounded six straight positive years since 2021 (+34.8% through +8.6% YTD), the only steady compounder of the five. Much of that steadiness comes from its rival's failure. Boeing's quality crisis stacked a record 8,754-aircraft backlog at Airbus, and in a duopoly where one side's crisis becomes the other's order book, suppliers like Moog, Korean Air and KAI diversified away from Boeing dependence.
In space, Airbus holds the manufacturing axis of the European sovereignty theme: up to 440 second-generation OneWeb satellites for Eutelsat and a 30.5% stake in Voyager's Starlab. If the satellite merger with Thales and Leonardo (Project Bromo) completes, European satellite manufacturing becomes one body, but it is still at MOU stage.
Verdict
The space re-rating ran through operators, data, propulsion and components, and did not reach the prime layer. It did not fail to arrive; that layer's stocks run on other clocks entirely (budgets and the duopoly). In the space chain, the primes act as a gateway: they take government budgets and pass them to the tiers below, where they surface as the re-rating of Moog, Avio and Firefly. The European-Korean primes (Thales, Leonardo, Hanwha Aerospace, KAI, Gilat) have since joined the map; how primes behave where budgets actually move is taken up in When budgets move, primes move. Once they join the map, the missing Thales Alenia connections at Iridium and SES close, completing the prime graph across the European and Korean layers.