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Metric

Audience overlap

The same people counted twice

How it is calculated
1−unique÷sum of reaches
% overlap
What it is

The same people counted twice

Share of subscribers common to two channels. When buying across ten channels in the same niche, overlap can reach 40% — you pay twice for the same person.

Example

What it looks like in numbers

Ten channels in the same niche delivered a combined 610,000 views, but unique viewers totaled 380,000. Overlap of 38% — every third viewer was paid for twice.

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