Capital · 2026

Best-funded private space companies

19 private companies ranked by total capital raised. SpaceX leads at $10.6B; the top 10 hold roughly 98% of all tracked funding.

Total raised (tracked)
$20B
Top-10 share
98%
Companies tracked
19

Ranked by total capital raised

  1. 1

    SpaceX / Starlink

    $10.6B
    Founded 2002 Hawthorne, CA Launch & Satellite Internet Valuation: $1.75T (IPO target) Status: filing

    World's leading launch provider and operator of Starlink satellite internet constellation with 8M+ subscribers

  2. 2

    Relativity Space

    $2.45B
    Founded 2015 Long Beach, CA Launch Valuation: $4.2B Status: possible

    3D-printed rocket manufacturer developing Terran R medium-lift launch vehicle

  3. 3

    Sierra Space

    $2.25B
    Founded 2021 Broomfield, CO Human Spaceflight Valuation: $8B Status: possible

    Developer of Dream Chaser spaceplane and commercial space station modules

  4. 4

    Stoke Space

    $1.45B
    Founded 2019 Kent, WA Launch Valuation: $2.0B Status: early

    Developing fully and rapidly reusable rocket with innovative upper stage recovery

  5. 5

    Vast

    $1.1B
    Founded 2021 Long Beach, CA Space Stations Valuation: $2.0B Status: possible

    Commercial space station developer building Haven-1, the first single-launch commercial station

  6. 6

    Axiom Space

    $955M
    Founded 2016 Houston, TX Space Stations Valuation: $2.5B Status: possible

    Building the first commercial space station to succeed the ISS

  7. 7

    K2 Space

    $426M
    Founded 2022 Los Angeles, CA Satellite Manufacturing Valuation: $3B Status: early

    Building ultra-high-power satellites for defense and commercial applications

  8. 8

    Voyager Space

    $300M+
    Founded 2019 Denver, United States space-stations Status: operational

    Voyager Space is a space exploration company building the future of commercial space stations and in-space services through strategic acquisitions and partnerships. The company leads development of the Starlab commercial space station in collaboration with Airbus, creating infras…

  9. 9

    True Anomaly

    $250M+
    Founded 2022 Denver, CO Defense Valuation: $500M+ Status: early

    Space domain awareness and satellite servicing for national security applications

  10. 10

    Impulse Space

    $150M+
    Founded 2021 Redondo Beach, CA In-Space Services Valuation: $400M+ Status: early

    In-space transportation and orbital transfer vehicle provider

  11. 11

    Varda Space Industries

    $150M+
    Founded 2020 El Segundo, CA In-Space Manufacturing Valuation: $500M+ Status: early

    In-space manufacturing company producing pharmaceuticals and materials in microgravity

  12. 12

    CesiumAstro

    $100M+
    Founded 2017 Austin, United States satellite-communications Status: operational

    CesiumAstro develops multi-beam phased array communications systems for satellites, UAVs, and other platforms. The company's active electronically steered array (AESA) technology enables high-bandwidth, software-defined communications that can dynamically allocate capacity. Cesiu…

  13. 13

    Hermeus

    $100M+
    Founded 2018 Atlanta, United States aerospace Status: development

    Hermeus is developing hypersonic aircraft capable of Mach 5+ speeds, dramatically reducing flight times (e.g., New York to London in 90 minutes). The company has secured contracts with the US Air Force for its Quarterhorse and Darkhorse vehicle programs. Hermeus combines aerospac…

  14. 14

    Slingshot Aerospace

    $80M+
    Founded 2017 Austin, United States space-situational-awareness Status: operational

    Slingshot Aerospace develops AI-powered space domain awareness and simulation software. The company's Slingshot Beacon platform provides real-time space safety and sustainability analytics, while its digital space twin enables mission simulation and training. Slingshot has contra…

  15. 15

    Starfish Space

    $21M
    Founded 2019 Kent, United States in-space-services Status: operational

    Starfish Space is developing the Otter spacecraft for satellite servicing, enabling life extension through docking and repositioning of satellites in orbit. Founded in 2019 by former Blue Origin engineers Austin Link and Trevor Bennett, Starfish Space is advancing autonomous rend…

  16. 16

    Epsilon3

    $18M
    Founded 2021 Los Angeles, United States software Status: operational

    Epsilon3 is a space operations software company founded by former SpaceX and Google engineers. The company's platform digitizes and automates complex test and launch procedures, replacing paper-based processes with real-time collaborative workflows. Used by major launch providers…

  17. 17

    Synthetaic

    $16M
    Founded 2019 Milwaukee, United States artificial-intelligence Status: operational

    Synthetaic develops AI models that can detect and identify objects in satellite imagery with minimal training data. The company's RAIC (Rapid Automatic Image Categorizer) platform can analyze satellite imagery to find ships, vehicles, infrastructure, and other objects of interest…

  18. 18

    Scout Space

    $15M
    Founded 2019 Washington, United States space-situational-awareness Status: operational

    Scout Space develops satellite-based space domain awareness systems using optical sensors deployed on host satellites in orbit. The company's ORCA platform provides persistent orbital monitoring capabilities for tracking and characterizing objects in space. Supported by US Space …

  19. 19

    Kayhan Space

    $4M
    Founded 2018 Boulder, United States space-situational-awareness Status: operational

    Kayhan Space provides autonomous space traffic coordination and collision avoidance software. The company's Pathfinder platform uses AI to automate conjunction assessment and maneuver planning for satellite operators, reducing the risk of orbital collisions. Kayhan Space works wi…

Frequently asked about space funding

What is the best-funded private space company in 2026?
SpaceX is by far the best-funded private space company, having raised approximately $10.6 billion across 25+ priced rounds and reaching a $1.75T valuation in connection with its April 2026 confidential S-1 filing. The next-largest privates by total raised are Sierra Space ($2.25B), Relativity Space ($2.45B), Stoke Space ($1.45B), and Vast ($1.1B).
How much money has been raised by private space companies?
Tracking the largest disclosed totals, the top 19 private space companies have collectively raised approximately $20B. The top 10 alone account for roughly 98% of that total — concentration that mirrors the broader space-capital landscape (see /articles/the-funding-trapdoor/).
Which private space companies are most likely to IPO next?
SpaceX leads with a confidential SEC S-1 filed in April 2026 and a target June 2026 Nasdaq IPO. Other companies with formal IPO timelines or strong likelihood include Sierra Space (post-2026), Axiom Space (2027+), Stoke Space (2029+), K2 Space, Impulse Space, and Relativity Space.
Are most private space companies based in the US?
Yes. Of the top 25 best-funded private space companies, the vast majority are headquartered in the US. The structural reasons (anchor government customers, DARPA-style risk capital, deep aerospace talent base) are covered in our analysis at /articles/how-america-cornered-the-space-industry/.

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