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COSTCostco Wholesale CorporationSell5.1·$946.92
COST · Concentration risk · 10-K extracted

Costco Wholesale (COST) concentration risks

Updated

The most significant concentration Costco Wholesale discloses is U.S. and Canadian operations at 86%, classified HIGH by disclosed size. Below: the full set from the latest 10-K — verbatim quotes, filing references, and a synthesis of what these exposures mean together.

Model-generated analysis — not investment advice. Not a registered investment advisor. Past performance does not guarantee future results.

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Methodology · Editorial policy & full disclaimer

Source: Costco Wholesale’s SEC Form 10-K filed — view the filing on SEC EDGAR ↗

At a glance

Disclosed-size breakdown · 2 disclosed concentrations

HIGH1
MEDIUM1
LOW0
Disclosed concentrations

Each card carries a disclosed-size chip (HIGH / MEDIUM / LOW — how large the exposure is as a share of revenue, not how dangerous it is) and a nature tag: Built-in(the company’s own model, geography, or products) or Outside party (an external customer, supplier, or distributor it relies on).

HIGHBuilt-inGeographic
86%

U.S. and Canadian operations

“10-K Item 1A: 'Our financial and operational performance is highly dependent on our U.S. and Canadian operations, which comprised 86% and 84% of net sales and operating income in 2025'”
— SEC 10-K · filed Oct 2025
MEDIUMBuilt-inGeographic
26%

California operations

“10-K Item 1A: 'Within the U.S., we are highly dependent on our California operations, which comprised 26% of U.S. net sales in 2025'”
— SEC 10-K · filed Oct 2025
TrendMatrix Research · concentration synthesis

What these concentrations mean together

updated 2026-10-11

Costco's concentration is geographic and structural. Its U.S. and Canadian operations comprised 86% and 84% of net sales and operating income, respectively, in the latest fiscal year, a high-share exposure. This reflects where the warehouse model is most mature rather than a dependency on any one counterparty, and it means company results track North American consumer spending, wages and competition closely. Within the U.S., the company is dependent on its California operations, which comprised 26% of U.S. net sales. This is a medium-share exposure and is the more idiosyncratic of the two, since it ties a meaningful portion of domestic sales to one state's economy, regulation, labor costs and exposure to events such as earthquakes or wildfires. Net, the two exposures nest: California sits inside the U.S. and Canadian base. The regional concentration sets the baseline macro sensitivity and moves slowly, while the California share is the narrower source of a localized shock. Neither involves a single customer or supplier, so the risk is one of geography and consumer-market exposure, and the North American share is what could most move the verdict.

For the engine’s reasoning on COST’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.

Industry peers · Discount Stores

Peer concentration profile

SymbolNameHIGHMEDIUMLOWTotal
COST●Costco Wholesale Corporation1102
DGDollar General Corporation1001
DLTRDollar Tree, Inc.0101
BJBJ's Wholesale Club Holdings, I0011
OLLIOllie's Bargain Outlet Holdings0000
PSMTPriceSmart, Inc.0000

Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.

Concentration disclosures are extracted verbatim from SEC 10-K filings; the disclosed-size classification and the synthesis above are engine-derived. Size reflects how large each exposure is against fixed share thresholds (HIGH >50%, MEDIUM 25–50%, LOW <25% or an explicit diversification statement), not a judgment of how dangerous it is, and is not a buy/sell rating, a price target, or a view on the stock. Not a complete list of risk factors — see the full filing.

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