Canonical research dossier
Q36 / Defined markets / Market mechanismWhich entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?
Mobile operating systems / Herfindahl-Hirschman Index- 2025
- 5,094
- prior anchor
- Observed change
- +243
- 1 year
- 2026
- 5,337
- latest anchor
- Current custody
- 1
- source record
Published signal
The observation behind the question
Latest observed anchor versus the immediately preceding observed anchor; intervening years are not estimated.The latest encoded HHI anchor is higher within this documented market series. The change alone does not identify a cause or establish competitive harm.
This is a within-profile comparison governed by the documented statcounter mobile operating-system page-view share boundary. It is not annualized and should not be compared as a common national series with differently defined markets.Declared empirical track
Market mechanism
Test entry, exit, switching, price, quality, capacity, and share pathways inside the declared market boundary.- Evidence base
- 4 observed anchors / 2023-2026
- Data status
- estimated public
- Confidence
- medium
- Metric family
- market-hhi
Evidence to collect
4 declared requests- 01
Entry and exit chronology for the same product and geographic boundary.
- 02
Participant shares at both observed anchors, including acquisitions and denominator changes.
- 03
Switching, price, quality, output, and capacity records covering the comparison window.
- 04
Method documentation confirming the market boundary and measurement basis across both anchors.
Current source custody
Evidence already attached to the observed signal
Collection requests above remain separate from these published source records.This is a within-profile comparison governed by the documented statcounter mobile operating-system page-view share boundary. It is not annualized and should not be compared as a common national series with differently defined markets.
Research handoffs