Customer and supplier relationships: who does a company depend on?

ATLAS maps a company's customers and suppliers from what companies state in their SEC 10-K filings, quoting the sentence and linking to the document.

What it does

Search for "Apple's suppliers" and you mostly get lists copied from one another. ATLAS builds its map only from disclosures: a supplier says in its 10-K that a customer accounted for a stated share of its sales, and we keep the exact sentence and the link.

Because large customers rarely name their suppliers, the network is built from the supplier side. A relationship appears only when a percentage is disclosed, not when it is merely rumored or inferred.

Worked example with live data

Real ATLAS numbers, prices as of Oct 26, 2026.

Illustrative arithmetic on AAPL's revenue base of $467B: a customer at the 10% disclosure threshold is $46.7B of sales and one at 21% is $98.0B. If that 21% customer cut orders by 30%, the supplier would lose about $29.4B of revenue, 6.3% of its total.

MeasureValue
Revenue, last 12 months$467B
A customer at 10% of sales$46.7B
A customer at 21% of sales$98.0B
Revenue lost if the 21% customer cuts orders by 30%$29.4B
As a share of total revenue6.3%

The company data is live; the scenario in this example (amounts, weights or sizes) is an illustration, not a recommendation.

How ATLAS calculates it

US rules require a company to disclose customers that account for 10% or more of its revenue. ATLAS extracts these statements, matches the companies, and draws the lines on a map between headquarters. A strict rule applies: no disclosed percentage, no link.

To understand importance, convert the percentage into revenue. A customer at 21% of sales of a company with revenue R represents 0.21 R, and a cut in its orders of 30% removes about 6.3% of the supplier's revenue.

Limits you should know

The map is incomplete by design: it shows only disclosed relationships, mostly seen from the supplier. A missing line does not mean no relationship. Percentages describe the year of the filing and change.

Where it sits in the plans

Relationships are part of stock analysis: the Free plan covers the 200 largest US companies and funds, Starter and above cover all companies.

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Frequently asked questions

How can I find a company's suppliers and customers?

Public companies must disclose customers above 10% of revenue in their 10-K filings. ATLAS collects those sentences and links the source for each relationship.

Why does the map not show every supplier?

Because companies rarely list all their suppliers, and ATLAS only draws relationships backed by a disclosed percentage.

What is a 10-K?

It is the annual report US public companies file with the SEC, with audited financials and risk disclosures, including customer concentration.

Is customer concentration a risk?

Yes. A supplier that depends on one customer for a fifth of its sales can be hurt badly if that customer changes its orders or its supplier.

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Stocks used in this example

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Not investment advice. ATLAS estimates come from statistical models and public data; they can be wrong and past results do not predict future ones. Disclaimer

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