raw measure domains observed moving, each carrying its own presence counts ·

Domain movers

also called SERP-wide moversDomains gaining and losing page-one spaceMarket movers

Definition

Which domains gained or lost results-page presence across the tracked demand during a window, the answer to 'who benefited' when the market moved.

Scope, grain and dimensions

Grain: One domain, on one day, for one platform and results-page feature.
Dimensions: domain · platform · results-page feature · date
Required filters: date range
Aggregation: One row per domain per day per platform and results-page feature, carrying summed slot, query and URL counts. There is no movers measure at all; a count of movers is something the reader assembles by choosing a movement cut-off.
Metric type: raw measure · domains observed moving, each carrying its own presence counts

Data sources

Rank tracking Source page →

Where you'll see this

Named reports that normally include this metric.

SERP volatility and algorithm update report

Skills and analyses that use it

Skills carry the judgment; the analysis verbs do the reading.

Skills

update-week-check competitor-deep-dive anomaly-investigator

Method rungs and levers

R2 Retrieved

A rung tells you what a movement here can and cannot explain, read the rungs below it first.

levers L2 Demand modeling

Ask Quattr

"Which kinds of sites gained during the update?" Simulate this →
"Who took the space we lost?" Simulate this →
"Did publishers or retailers benefit?" Simulate this →

Caveats, freshness and failure modes

The set of domains is whatever appeared on the tracked results pages, not a curated competitor set, most movers will not be competitors in any commercial sense.

A domain gaining presence on a tracked demand set is not a domain gaining traffic; presence is slots on a page, and click behaviour is not observed here.

There is no movement threshold in the data, and no movers measure in the dataset: "a mover" is a judgement the reader imposes, so two readers produce different mover counts from the same day.

Freshness: ~1 day behind, daily observation, available the following day.

Common failure modes

Quoting a mover count as if the threshold were defined in the product.
Treating publisher and community domains that gained space as addressable competitors.
Reading presence gains as traffic gains.

Watch this metric read in a real run

All runs →

2 min 5 secTraffic more than halved in six months. Nobody could say why.Search Console · Anomaly investigator◐Recreated from an anonymized session

Metrics

SERP volatility index Page-one footprint retention Competitor share by rank bucket Segment leader

Verification

Last verified 2026-08-04 · reference version 1.1 { } This metric as JSON ↗

A definition is the smallest part of this.

The measurement matters because something acts on it. Here is the rest of the showcase, in the order most people find useful.

Watch it work Ask a question, see the answer take shape → A labelled simulation on a fictional account, nothing connects to your site. Workflows Dashboard rituals, translated to one sentence → Mined from real product sessions, the before, and the after. The plugin The skills that carry the judgment → Each one is the routing, the statistical bar and the reporting rules for a question. Blog Why this is worth measuring at all → Definitions live here; the arguments live there.