Screen Public Stocks for Private-Company Demand Exposure
Published September 2, 2026
Altsets
Research by Altsets Research
Build an investable counterparty screen that distinguishes confirmed operating sales, equity stakes and weak associations, using Tesla–SpaceX as the evidence example.
Dataset reference:Altsets supply chain relationships dataset covers 115k+ entities, 550k+ relationships, and history since 2006 across the full dataset; individual analyses use a narrower scope.
Key findings
- A commercial relationship, verified product and dated sales measure are stronger screening evidence than a thematic association.
- Tesla’s disclosed SpaceX sales and costs illustrate operating exposure that should be kept separate from its equity investment.
- A proxy basket should rank candidates by financial materiality and dilution from other businesses rather than by the fame of the private customer.
A public company can sell to a private company without giving its shareholders meaningful exposure to the private company's growth. The candidate screen needs to measure how much the commercial relationship matters relative to the public company's other businesses.
Altsets can discover those counterparties from the commercial graph. Filings from the public supplier can then establish products, sales and financial stakes that the private customer may not disclose itself.
Tesla–SpaceX demonstrates an evidence ladder
The source Altsets graph contains a Tesla → SpaceX relationship. Tesla's June 2026 filing reports $405 million of SpaceX Megapack revenue and $307 million of associated cost of revenues for the first six months of 2026. Subtracting the two gives $98 million of gross profit for those disclosed sales, before other expenses.
That is a verified operating channel in the source filing, with an explicit period and product. Tesla also disclosed a $2 billion SpaceX common-stock investment in March 2026 and a stake below 1%. The investment belongs in a separate exposure column.
The Tesla–SpaceX company analysis examines those channels directly. For a broader candidate screen, the lesson is what evidence earns a company admission, rather than treating Tesla as equivalent to SpaceX ownership.
A basket needs comparable evidence, not merely connected names
| Candidate evidence | What it earns in the screen |
|---|---|
| Theme association only | Exclusion until a commercial route is established |
| Mapped company relationship | Candidate status with product and materiality unresolved |
| Product confirmed by a dated disclosure | Verified operating route |
| Compatible customer sales and supplier revenue | Measurable company-level demand concentration |
| Equity ownership disclosed | Separate financial-stake exposure |
A supplier with confirmed sales can still be a weak proxy if the customer is small relative to its total revenue. A high customer share can be more relevant, but may carry contract, liquidity or security-access constraints. Those should be considered before assigning basket weights.
The dilution problem should be visible
For an operating-demand basket, weight or rank candidates by the customer-linked share of their business and explain the unmeasured remainder. Avoid using an equity-stake value as if it were supplier revenue, or a contract ceiling as if it were recognized sales.
The stronger research hypothesis is that private-customer operating indicators can improve forecasts for economically exposed public suppliers. Test supplier fundamentals first, then returns. A private valuation increase need not change supplier purchases at all.
An investable screen also needs the correct security, listing, liquidity and corporate-parent mapping. The graph discovers the economic company; a security dataset establishes whether and how its stock can be traded.
This produces a defensible candidate basket with financial evidence for each route, instead of a list of recognizable names. The company-to-security mapping guide addresses tradability, and the Altsets methodology explains relationship estimates.
Sources
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Methodology
Cite this research
Altsets Research. "Screen Public Stocks for Private-Company Demand Exposure." Published September 2, 2026. https://www.altsets.com/research/public-stocks-exposed-to-private-companies