How much of your revenue walks out if two customers, one channel or one SKU leaves?
Enter revenue shares per customer, product, channel or region — anonymised labels are fine. See top-1 and top-3 concentration, the HHI, and the revenue left standing if your biggest relationships walk away.
Enter revenue share (%) per customer, SKU, channel or region — anonymised labels are fine.
Top-N shares are self-explanatory. HHI (Herfindahl-Hirschman Index) sums the squares of shares (0–10,000); above 2,500 is conventionally concentrated, above 1,500 worth watching.
Loss scenarios remove your top one and two sources and show what remains — the number that should appear in every annual plan's risk page.
Concentration is a risk to manage, not a verdict. Many great businesses are concentrated by design; the failure is not knowing by how much.
Illustrative figures, not a client outcome.
There's no universal safe level — a 40% anchor customer with a 3-year contract differs from 40% spot business. The tool quantifies; the contract quality is your judgment.
Both, separately — and note the overlap. If your biggest customer is also reached through your biggest channel, the real concentration is higher than either view shows.
Version 1.0 · Reviewed 2026-10 · Methodology is fixed and version-controlled; results depend on your inputs.
Concentration measured. Now build the resilience plan.
BLEZZINGS runs this analysis inside a focused engagement — with your data, your market and a plan to act on it.