Compare Companies
| Field | 🇺🇸 Stoke Space | 🇺🇸 Rocket LabNASDAQ: RKLB | 🇺🇸 Firefly AerospaceNASDAQ: FLY | 🇺🇸 Relativity Space |
|---|---|---|---|---|
| Type | private | public | public | private |
| Country | 🇺🇸 United States | 🇺🇸 United States | 🇺🇸 United States | 🇺🇸 United States |
| Founded | 2019 | 2006 | 2017 | 2015 |
| CEO | Andy Lapsa | Peter Beck | Jason Kim | Tim Ellis |
| Mkt Cap / Valuation | Undisclosed (Series C $260M, April 2025; a16z lead) | ~$9.5B | ~$5.2B | ~$4.2B (post Series-E, 2023) |
| Employees | ~200+ | ~2,600+ | ~1,200 (post-IPO + SciTec acquisition) | ~1,000 |
| Sector | Launch Vehicles | Launch & Space Systems | Launch & Lunar Services | 3D-Printed Rockets |
| Last raise / Last filing | $260M (2025-04-15) | 10-K filed | 10-K filed | — |
| Top risks | Pre-revenue development stage — no orbital launches completed; technical risks inherent in novel full-reuse upper stage architecture.; Hydrogen propulsion is technically demanding and infrastructure-intensive; most commercial launch providers have moved to methane or kerosene. | Neutron development risk: a Q3 2025 stage-1 tank test failure caused schedule slip; any further major setbacks to a Q4 2026 debut could erode investor confidence and require additional capital.; Customer concentration: SDA and U.S. defense represent the majority of backlog; any budget sequestration or program changes in DoD space spending would materially impact near-term revenue visibility. | Public market scrutiny: FLY stock down from $60 IPO pop to ~$32 by May 2026 — execution risk elevated; Alpha launch cadence constrained by Vandenberg and Cape Canaveral scheduling | No orbital flights yet — significant execution risk before first Terran R launch; Delay from 2026 to 2027 first flight target; further delays could pressure SES contract |
| Next catalyst | First full-stack integrated vehicle test (both stages) (2025–2026) | Neutron first launch — Q4 2026 (2026-Q4) | Blue Ghost Mission 2 — far-side Moon delivery with ESA Lunar Pathfinder relay (2026 Q3–Q4) | Terran R first stage completion and engine integration (2026) |
Maximum 4 companies. Pass slugs in the ids query parameter, comma-separated. Try SpaceX vs Blue Origin vs Rocket Lab vs Firefly.