COMPANIES · SPACE INFRA

Sierra Space

In the AI Economy Index: private

Sierra Space is a privately held American company building the Dream Chaser reusable spaceplane, satellites and spacecraft subsystems, propulsion and solar arrays, with a growing national-security business. It raised $550 million in March 2026 at an $8 billion valuation.

AI-adjacentSpace infra
What it does

Sierra Space is a privately held American company building the Dream Chaser reusable spaceplane, satellites and spacecraft subsystems, propulsion and solar arrays, with a growing national-security business. It raised $550 million in March 2026 at an $8 billion valuation.

Why it matters

It is one of the larger private space companies and holds Space Development Agency tracking-layer work alongside its space-transport ambitions, which puts it in the same defense programs as the primes. Its own press material describes no AI product.

How it makes money

NASA, US national-security customers and commercial payload customers pay Sierra Space for satellites, spacecraft, subsystems and cargo transport.

Geography

United States

AI stack position

Space and next-generation infrastructure. Launch providers, satellite builders and operators, ground networks and the first attempts at running computing in orbit. Most of these companies have no AI business today. They are on this map because of what they carry, connect or build for the companies that do. Open the space lens.

Earnings

No box score on file.

The Box Score

Connections (2)

Every connection below is tied to a readable source, date, classification and statement of its limits. A company source establishes what that company stated. It does not necessarily provide independent confirmation.

Current relationships (1)

Coatue Management invested in Sierra Space
BacksCurrent
Coatue was named among the investors in Sierra Space's $550 million Series C round, which closed at an $8 billion post-money valuation and was led by LuminArx Capital Management.

Source: 2026-03-05 · reviewed 2026-09-24

Evidence: Primary-source statement · Reported operating

Limits: Establishes participation in a funding round. It does not establish the size of Coatue's stake, any board seat, control, or that the $8 billion valuation reflects revenue or an independent appraisal.

Sierra Space Closes $550 Million in Series C Round with a Valuation of $8 Billion ↗

Comparisons (1)

Sierra Space competes with L3Harris Technologies
Competes withComparison only
Sierra Space said it holds a Space Development Agency Tranche 2 Tracking Layer contract with a maximum potential value of $740 million for 18 missile-warning satellites, the same SDA tracking-layer mission area in which L3Harris builds satellites.

Source: 2026-03-05 · reviewed 2026-09-24

Evidence: Analytical comparison · Product/market overlap

Limits: The cited source does not name L3Harris. Maximum potential contract value is a ceiling, not revenue or money received, and this does not establish that either company won work at the other's expense.

Sierra Space Closes $550 Million in Series C Round with a Valuation of $8 Billion ↗

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Inclusion in this database is not an endorsement of a company or its securities. Nothing here is a recommendation to buy or sell anything, and this is not investment advice. See the disclosures. Data last updated .