Better Space Stock to Buy Before 2026 Runs Out: SpaceX vs. Rocket Lab

Rocket Lab is making 35 launches since the start of 2025 versus SpaceX’s 255, with SpaceX still dominating U.S. launch volume. However, Rocket Lab is pitched as the “pure-play” space exposure and is expected to expand via its $8B acquisition of Iridium Communications (66 LEO satellites), while SpaceX’s upside is tied to AI through xAI/Starlink. Valuation is a key caution: both trade at steep price-to-sales multiples (SpaceX ~110x vs. Rocket Lab ~82x) despite Rocket Lab’s much lower revenue ($602M vs. SpaceX $18.7B) and differing profitability (SpaceX net loss of $4.94B vs. Rocket Lab net income of $198M).

Analysis

The market is likely overpricing “launch volume” as the profit pool. In reality, launch is becoming the toll road that subsidizes downstream economics: recurring services, satellite operations, and systems integration. That shifts the winners toward names with installed base and contract stickiness, while pure launch plays face natural multiple compression unless they can prove durable operating leverage.

For RKLB, the issue is not whether the company can grow, but whether growth converts into a credible earnings bridge before patience runs out. A slip in Neutron or a pause in customer awards would push the story back into "capital-intensive option" territory, where premium sales multiples can collapse quickly. By contrast, a real step-up in payload class and cadence would be the only catalyst that can justify the current valuation.

The contrarian point is that the sector-wide premium may be more fragile than it looks because SpaceX’s scale and adjacent monetization raise the hurdle rate for everyone else. If AI-linked optionality becomes a real cash-flow source, the relative scarcity value of launch alone diminishes. That makes the next 1-3 months about execution proof, not narrative momentum; absent that, the better risk/reward is to wait or trade around event dates rather than pay up for duration.

Key Decisions for Investors

• Do not chase RKLB at current levels; wait for either Neutron launch confirmation or a >10% pullback after a catalyst miss before initiating a long.
• If already long RKLB, prefer a 3-6 month call-spread structure over outright equity to cap multiple risk; thesis breaks if management does not reiterate launch and margin milestones next earnings.
• Treat IRDM as event-driven only: engage as merger-arb/relative-value only after deal financing and terms are independently verified; otherwise stay flat until the spread compensates for execution risk.
• Set a hard watch item on RKLB guidance and launch cadence; a one-quarter delay or any downward revision to launch expectations is the clearest falsifier.