Explanatory notes on concentration measures, denominators, thresholds, source construction, and the limits of descriptive competition evidence.
AR-MM / permanent publication series
Methods note
Methods and Measures
Explanatory notes on concentration measures, denominators, thresholds, source construction, and the limits of descriptive competition evidence. Cell = one permanent editionFill follows evidence-unit count within this series
- Current editions
- 1
- 1 publication year
- Research themes
- 2
- declared memberships
- Geographies
- 1
- 1 research scope
- Source links
- 3
- reviewed through Jul 17, 2026
Series contract. Methods notes explain how a measure can be read and where it stops. They do not convert screening conventions into legal findings or causal estimates.
Evidence standardInstitutional mandate
What this collection is for.
Methods notes explain how a measure can be read and where it stops. They do not convert screening conventions into legal findings or causal estimates.
- Primary audience
- Analysts, students, reporters, and public-interest researchers
- Output
- Methods note
- First edition
- May 16, 2026
- Latest edition
- May 16, 2026
Coverage profile
Themes, scopes, and evidence volume
Declared themes
- Market structure1100% of series editions
- Methods and public data1100% of series editions
Research scopes
- U.S. domestic research1100% of editions
- Evidence units
- 3
- Source links
- 3
- Current editions
- 1
- Source clock
- Jul 17, 2026
Edition register
1 citable edition
- AR-MM-2026-01Version 1.0
Methodology primer / United States
How HHI Helps Explain Market Concentration
A short public-interest guide to reading descriptive concentration metrics.- Market structure
- Methods and public data
- Published
- May 16, 2026
- Sources reviewed
- Jul 17, 2026
- Evidence
- 3 cited sources
- Source links
- 3
Series relationship register
Exact overlap with the other five collections
| Series | Shared themes | Shared scope | Same format | Route |
|---|---|---|---|---|
| Competition Research Briefs | Markets | us-domestic | Yes | Compare |
| Public Data Notes | Methods | us-domestic | Yes | Compare |
| State of Competition | Markets | us-domestic | Yes | Compare |
| Competition Insights | Markets | us-domestic | No | Compare |
| International Competition Policy Evidence Briefs | 0 / no declared overlap | 0 / separate scope | No | Compare |
Theme overlap describes exact shared taxonomy memberships only. It does not establish shared findings, methods, quality, or policy implications.
Collection citation
Open edition citations Antitrust Radar. (2026). Methods and Measures [Publication series]. Antitrust Radar.