Space-based infrastructure has moved from speculative theory to commercial reality, drawing investors toward high-growth pioneers like AST SpaceMobile (ASTS) and Firefly Aerospace (FLY).
AST SpaceMobile trades at $59.40, down 2.62%, with a market capitalization of $18 billion, while Firefly Aerospace trades at $22.86, down 5.18%, with a market cap of $4 billion.
AST SpaceMobile is building a space-based cellular network designed to connect directly with everyday smartphones, without requiring specialized hardware.
The company has secured commercial agreements with major carriers including AT&T (T), Verizon Communications (VZ), and Vodafone (VOD), anchoring its direct-to-device connectivity strategy.
Partnerships with over 50 mobile network operators worldwide give AST SpaceMobile access to a potential user base of nearly 3 billion subscribers globally.
In FY 2025, AST SpaceMobile reported revenue of nearly $71 million, representing growth of approximately 1,500% compared to the prior year, a striking acceleration in commercial traction.
Despite that revenue surge, the company posted a net loss of roughly $342 million, resulting in a net margin of around negative 480% as satellite deployment costs remain substantial.
Free cash flow was approximately negative $1.1 billion, reflecting the capital-intensive nature of building out a full orbital constellation at commercial scale.
Firefly Aerospace takes a different approach, focusing on the logistics of space by providing launch vehicles and lunar landers to government and commercial clients alike.
Its customer base includes the U.S. Space Force, NASA, and major defense contractors such as Lockheed Martin (LMT), with a long-term agreement with Lockheed running through 2031.
Firefly also collaborates with Northrop Grumman (NOC) and has expanded its technical capabilities by acquiring software and AI navigation firms to support lunar and orbital missions.
The company reported a backlog of roughly $1.4 billion as of late 2025, providing meaningful near-term revenue visibility that its rival currently lacks.
Firefly Aerospace grew FY 2025 revenue to approximately $159.9 million, a 163% increase over the prior year, suggesting the company is successfully scaling its launch operations.
Despite that top-line growth, Firefly still posted a net loss of approximately $298 million for the period, as it continues investing heavily in mission capacity and infrastructure.
On valuation, Firefly Aerospace trades at a lower price-to-sales multiple than AST SpaceMobile, making it appear relatively more attractive on a revenue-based comparison.
AST SpaceMobile’s $18 billion market cap sits atop just $71 million in annual revenue, reflecting enormous growth expectations that are already baked firmly into its share price.
Firefly’s $4 billion market cap against $160 million in revenue and a $1.4 billion backlog offers investors a comparatively cheaper entry point with stronger near-term revenue foundations.
Neither company is expected to turn a profit in the near term, and both are burning cash at scale, making risk tolerance a central factor in any investment decision.
AST SpaceMobile carries a gross margin of negative 24,279%, while Firefly posts a positive gross margin of 16.49%, a meaningful structural difference at this stage of growth.
For investors weighing these two space infrastructure stocks in 2026, Firefly Aerospace’s lower valuation, larger revenue base, and substantial backlog present a relatively more grounded case compared to AST SpaceMobile’s loftier market premium.
