How to Find Foreign Stocks Exposed to U.S. Mega-Cap Customers
July 27, 2026
Altsets
Research by Altsets Research
Work outward from large U.S. customers to discover foreign-listed suppliers with measurable revenue dependence, then validate the relationship and map the investable security separately.
Data used:Altsets Supply Chain Intelligence: 90k+ entities, 400k+ relationships, 20+ years of history.
Key findings
- The supplied relationship data associates Apple with 8.75% of SK Hynix revenue and Tesla with 19.03% of LG Energy Solution revenue, turning research on U.S. companies into specific foreign-stock candidates.
- Apple's historical supplier list independently names SK hynix, LG Energy Solution publicly describes itself as a Tesla ESS partner, and SK Hynix began Nasdaq ADR trading in July 2026, showing how relationship discovery and investability can be researched as separate steps.
Supply-chain data can turn research on a U.S. mega-cap stock into a foreign-stock discovery process. Instead of stopping with the U.S. customer, the investor can ask which listed overseas suppliers derive a meaningful share of revenue from that customer and whether the commercial relationship is independently supported.
Two supplied Altsets relationships show the idea. Apple is associated with 8.75% of SK Hynix revenue, and Tesla is associated with 19.03% of LG Energy Solution revenue. Those are not generic Korea exposures. They are company-specific revenue relationships to large U.S. customers.
Apple research can surface SK Hynix as a foreign stock candidate
The Altsets relationship makes Apple economically relevant to SK Hynix from the supplier side. Apple's FY23 supplier list independently names SK hynix and identifies manufacturing locations for Apple in China and South Korea. The public list is historical rather than a current revenue disclosure, so it supports the existence of the commercial relationship without proving that every facility or product remains unchanged today.
That combination is useful to an investor who begins with Apple. The relationship data identifies a foreign supplier with measurable customer exposure, while Apple's own supplier documentation provides an external evidence layer. The next step is stock research on SK Hynix, not an assumption that Apple explains the entire company.
Accessibility can change even when the economic company does not
SK Hynix became easier for U.S. investors to access in July 2026 when the company began trading American Depositary Receipts on Nasdaq. SK Hynix said the ADR listing was intended to expand its investor base while its primary company identity and underlying business remained the same.
That change is important for stock discovery. A supply-chain screen can surface the economic company first, then the investor can determine whether the company is available through a local listing, ADR, GDR, or foreign brokerage route. The foreign company versus security guide handles that second step separately.
Tesla research can surface LG Energy Solution
Altsets associates Tesla with 19.03% of LG Energy Solution revenue in the displayed relationship data. LG Energy Solution also publicly describes itself as a Tesla ESS partner and says batteries are scheduled to be supplied for Tesla's Megapack 3.
That gives the investor both economic magnitude and current product context. The relationship percentage says Tesla is a material mapped customer. The public evidence says the relationship includes energy-storage batteries. Neither fact implies that all Tesla-linked LG Energy Solution revenue belongs to ESS or that Tesla determines LG Energy Solution's entire investment case.
Foreign supplier screens can uncover different market exposures
The same U.S. customer can lead to stocks listed in South Korea, Japan, Taiwan, China, or Europe. That matters because the supplier may trade under a different valuation regime, currency, investor base, sector classification, or local macro environment than the U.S. customer.
A foreign supplier can therefore become interesting for reasons beyond simple demand read-through. The stock may offer a different way to express a view on the customer's growth, a different margin structure, or exposure to several customers that are not available in the original U.S. thesis.
Structural edges can widen the candidate set before metrics are available
The supplied Tesla graph also contains foreign counterparties such as Samsung Electronics and Lens Technology. Some of those edges do not have the same quantified economic metrics as the LG Energy Solution relationship.
They can still be useful for discovery, but the evidence standard changes. A structural relationship is enough to put a company on a research list. It is not enough to claim that the U.S. customer represents a specific share of the foreign supplier's revenue. The missing-metrics guide explains how to preserve that distinction.
This is different from buying a foreign thematic ETF
A broad country or sector ETF starts with a predefined basket. Supply-chain stock discovery starts with an economic relationship and works outward from the company the investor already cares about.
That can produce a much smaller and more deliberate research universe. An Apple investor can look for suppliers with measured Apple dependence. A Tesla investor can search for foreign suppliers with validated product relationships. An Nvidia investor can do the same across memory, manufacturing, server, and infrastructure companies.
The purpose is not to replace diversified funds. It is to find individual stocks whose connection to a familiar U.S. company would be difficult to discover from a domestic stock screener alone.
Customer exposure can be more useful than country labels
Two Korean companies can have completely different U.S. customer exposure. One can depend heavily on a U.S. customer while another serves mostly domestic or Asian demand. Treating both as "South Korea technology" loses the information the investor actually cares about.
Supplier revenue percentage creates a more direct question: how important is this specific U.S. customer to the foreign supplier? Public documents can then establish the product, contract, facility, or market context needed to decide whether the relationship belongs in the investment thesis.
The relationship does not answer valuation
A foreign stock can have attractive customer exposure and still be a poor investment at the current price. The customer can have bargaining leverage, the supplier can operate at low margins, currency can move against the investor, or local governance and market structure can matter.
Supply-chain data is best used as the discovery layer. It identifies the foreign companies worth researching because of a real commercial connection. Fundamental analysis still determines whether the stock deserves capital. The Altsets documentation explains how company search and relationship data can be accessed, while the free workspace is useful for visually exploring foreign counterparties around a U.S. company.
For metric definitions and evidence limits, read the Altsets methodology. Browse Supply-Chain Data Use Cases for other stock-discovery, trading, and portfolio applications.