Customer / Revenue Structure

Customer concentration risk fires when a single customer or small customer group represents a material percentage of a company's revenue, and the loss of that customer would produce damage the company cannot quickly absorb. The framework reads the pattern at three magnitudes depending on the percentage exposure, the customer's switching cost, and the duration of the contractual relationship. Pure-play suppliers to a single customer (chip manufacturers serving one OEM, manufacturing partners serving one product line) face the strongest read. Diversified suppliers with no single customer exceeding 10% of revenue typically do not fire the pattern.

The framework's diagnostic conditions track customer concentration relative to industry baseline rather than absolute thresholds. Different industries have structurally different normal ranges — semiconductor capital equipment serves a small number of foundry customers as a structural condition; consumer goods typically serve thousands of retail accounts as a structural condition. The pattern fires when a company's concentration exceeds its industry baseline meaningfully and the customer relationship lacks the structural binding (switching costs, design-in advantages, multi-year contracts) that would make the concentration durable. SEC 10-K Item 1 disclosure typically surfaces the necessary data for the diagnostic.

Concentration without structural binding is bad. Concentration with strong structural binding can be neutral or even positive — semiconductor equipment makers serving foundry customers benefit from the customer's capital cycle when the relationships are durable. The framework's discipline is distinguishing concentration that creates dependency risk from concentration that reflects structural depth in a high-value relationship. The discriminator is the customer's switching cost and the supplier's design-in or platform position. Pure-play unrecoverable single-customer exposure fires the bearish pattern; deeply embedded multi-year platform exposure does not.

The framework's case library shows immediate same-day declines of 15-40% on disclosure of major customer loss for companies firing the concentration pattern. The drawdown typically extends an additional 30-60% over the subsequent 6-12 months as operational ramp-down forces capacity reductions, working capital impairment, and competitive position deterioration. Companies that had concentration without structural binding often cannot replace the lost customer at comparable margin within the same cycle. The framework's discipline is reading the concentration risk before the customer loss event, not after — the pattern's diagnostic conditions surface in financial filings well before the loss disclosure.

SEC 10-K Item 1 (Business) and Item 1A (Risk Factors) disclose customer concentration above 10% of revenue per customer. Item 7 (MD&A) often discloses concentration trajectory and management's view of the risk. The framework's diagnostic processes these disclosures into composite reads that combine concentration percentage, switching-cost assessment, and historical concentration trajectory. Companies with rising concentration without strengthening structural binding face the strongest firing magnitude. Free registration shows per-ticker reads on the live engine for companies firing the customer concentration pattern.