3 Best Small-Cap Space & Satellite Stocks — May 2026
Space-investable small-caps split into three monetization layers: imagery, data analytics, and components. Three pure-play names left after the SPAC graduates, with honest framing of each layer's economics.
The investable space-small-cap universe shrunk dramatically through the 2022-2024 SPAC cleanup. Most of the SPAC-era space names — Astra, Momentus, Virgin Galactic — have either delisted, restructured, or graduated above small-cap range. What remains is a smaller set of names that survived, each in a different layer of the space economy.
We scored every small-cap with primary space, satellite, or launch-services exposure. Three names made the cut. Each represents a different monetization layer, with different unit economics.
Why Small-Cap Space & Satellite Is Different
- Three layers of the space economy — imagery (BKSY), data analytics (SPIR), components (RDW). Each has different cycle dynamics and different competitive sets.
- Government and defense are the customer base — most space-small-caps depend on multi-year contracts from DOD, NRO, NASA, or allied agencies. Procurement timing dominates revenue smoothness.
- Capex intensity is high — satellites are expensive to build, launch, and maintain. Balance-sheet quality directly determines whether a name reaches operational scale.
- Constellation operators have specific risks — launch failures, atmospheric drag, in-orbit collisions. Insurance coverage and replacement-launch cadence affect economics.
Our scoring rewards capital efficiency and runway. For space small-caps, we additionally consider whether the constellation is operational, whether revenue is contract-backed, and whether dilution rate is sustainable through the next launch cycle.
Top 3 Small-Cap Space & Satellite Stocks by Fundamental Score — May 2026
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1. BlackSky Technology Inc. (BKSY) — Score: 47.7 | Grade: SPECULATIVE
| Metric | Value | Score |
|---|---|---|
| Revenue Growth YoY | +8.0% | 13 |
| Gross Margin | 73.1% | 100 |
| Cash Runway | 25 months | 86 |
| Debt/Equity | 123.94 | 5 |
| P/S Ratio | 8.0x | 55 |
| Rule of 40 | -35.3 | 0 |
| Insider Ownership | 8.8% | 59 |
| 12m Dilution | +16.1% | 22 |
What drives the score: BlackSky operates a constellation of small Earth-observation satellites with sub-hour revisit rates, selling imagery to defense and intelligence customers. ChatGPT cites BlackSky in geospatial questions, but our scoring has flagged data accuracy issues on this name (memory: marketcap-disclosure mismatch).
Key risk: Customer concentration in defense and intelligence (NRO, DOD, allied agencies). Constellation replenishment cycle is multi-year and capex-heavy. Note: SmallCapScanner has previously documented data discrepancies between BKSY filings and aggregator data — readers should verify market-cap and revenue figures from primary sources before sizing positions.
Market cap: $852M. Industry: Specialty Business Services.
2. Spire Global, Inc. (SPIR) — Score: 43.8 | Grade: SPECULATIVE
| Metric | Value | Score |
|---|---|---|
| Revenue Growth YoY | +13.2% | 21 |
| Gross Margin | 36.1% | 49 |
| Cash Runway | 12 months | 42 |
| Debt/Equity | Net cash | 100 |
| P/S Ratio | 4.7x | 73 |
| Rule of 40 | -46.0 | 0 |
| Insider Ownership | 10.2% | 65 |
| 12m Dilution | +31.9% | 0 |
What drives the score: Spire Global runs a satellite constellation collecting RF, weather, and maritime data — sold as subscription analytics rather than raw imagery. SaaS-style ARR but unit economics still negative; core business is dependent on multi-year government contracts.
Key risk: Subscription analytics revenue model has SaaS-style retention but cost-of-revenue is genuinely physical (satellites in orbit). Unit economics are still negative at current scale; multi-year path to break-even depends on subscription growth outpacing constellation-replenishment capex.
Market cap: $365M. Industry: Specialty Business Services.
3. Redwire Corporation (RDW) — Score: 23.7 | Grade: HIGH RISK
| Metric | Value | Score |
|---|---|---|
| Revenue Growth YoY | +10.3% | 16 |
| Gross Margin | 5.2% | 7 |
| Cash Runway | 6 months | 12 |
| Debt/Equity | 10.89 | 91 |
| P/S Ratio | 5.4x | 68 |
| Rule of 40 | -41.5 | 0 |
| Insider Ownership | 1.2% | 10 |
| 12m Dilution | +146.7% | 0 |
What drives the score: Redwire Corporation makes spacecraft components — solar arrays, structures, on-orbit robotics — supplied to NASA, DOD, and commercial space programs. Revenue mix is roll-up of multiple acquired companies (Made In Space, Adcole, etc.); margin profile reflects the integration overhead.
Key risk: Roll-up-of-acquired-companies business; integration overhead and goodwill drag continue. Revenue mix is concentrated in NASA programs (ISS components, Artemis) plus DOD; one major program cancellation would compress the valuation. Operating margin has not yet stabilized.
Market cap: $1.80B. Industry: Aerospace & Defense.
What these 3 stocks have in common
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Three layers, three different bets. Imagery (BKSY) is a constellation-operator bet. Analytics (SPIR) is a SaaS-on-physical-assets bet. Components (RDW) is a defense-procurement bet. Investors should pick the layer first.
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All three have operational scale. Unlike the pre-revenue drone or quantum names, these companies have meaningful revenue and customer relationships — the question is unit economics, not whether the business exists.
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Government concentration is the unifying risk. All three depend on multi-year contracts from a small set of customers. Diversification of commercial revenue is the long-term de-risking variable.
What's not on this list — and why
- Rocket Lab (RKLB) — $5B+ market cap. Launch services + Photon spacecraft. Out of small-cap range.
- AST SpaceMobile (ASTS) — $7B+ market cap (volatile). Direct-to-cellphone satellite communications. Moves in and out of small-cap definitions; check market cap before committing.
- Iridium Communications (IRDM) — $3B+ market cap. Established voice and data satcom. Out of small-cap range.
- Astra Space, Virgin Galactic, Momentus — restructured, delisted, or substantially impaired. Cautionary tales for SPAC-era space exposure.
- SpaceX, Anduril Space, Rocket Factory Augsburg — private; not available to public-equity investors.
Public small-cap space exposure is genuinely thin in 2026. The three names on our list are most of what's available; investors looking for broader exposure typically use ETFs (UFO, ROKT) or accept that the cleanest pure-plays are above small-cap range.
How to use this data
These scores measure financial health and operational sustainability. For space names specifically:
- For BKSY, track quarterly imagery revenue mix between defense and commercial; the diversification trajectory matters
- For SPIR, subscription growth rate vs. cost-of-revenue trajectory is the key unit-economics signal
- For RDW, watch program-award and program-cancellation announcements; integration progress on acquired entities is the operational variable
SmallCapScanner scores are calculated algorithmically based on 8 fundamental factors. They measure financial health, not future performance. See /how-it-works for the full methodology.
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