Thumb-stop rate
Thumb-stop rate is the percentage of impressions that pause to engage. It's sometimes used interchangeably with hook rate, sometimes as the 1-second version.
What does Thumb-stop rate actually mean?
Thumb-stop rate measures attention earned in the first second of an ad. Different platforms define it differently. Meta's “Thumb-Stop Rate” (popularized in 2018-2020) was 3-second views over impressions, identical to hook rate. More recent industry usage refers to a 1-second pause specifically.
Whatever the definition, the underlying signal is the same: did the ad earn the first moment of attention required for the rest of the message to land? Thumb-stop is a creative-quality leading indicator that fires before any conversion data flows back. If a campaign's thumb-stop is collapsing, creative fatigue is setting in, so pause before CPMs spike.
Most performance teams treat thumb-stop and hook rate as interchangeable in 2026. Both diagnose the same thing: opening-second creative effectiveness.
Example
An Instagram Reels ad gets 100,000 impressions and 25,000 viewers stop scrolling for at least 3 seconds. Thumb-stop / hook rate = 25%.
When it matters
Thumb-stop is a leading indicator of creative fatigue. Watch it weekly; refresh creative when it falls below your benchmark.
Related terms
Hook rate
Hook rate is the percentage of impressions that watch past the first 3 seconds. It's the cleanest measure of a video ad's opening attention.
Hook
The hook is the first 1-3 seconds of an ad: the moment that earns attention and decides whether the rest of the ad gets watched.
Creative fatigue
Creative fatigue is performance decay caused by users seeing the same ad too many times, measured by rising CPM and frequency.
CTR
CTR is the percentage of impressions that result in clicks. It signals creative resonance and ad quality.
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