Source record
Citation, publisher, access, and license
Joint agency guidelines describing frameworks used to review mergers including structural presumptions based on post-merger HHI and changes in HHI.
This dossier follows one source through the observatory without widening its stated scope.
Record utility
Evidence topology
A zero means this source has no encoded row in that evidence domain. It is a boundary in the current observatory release, not a claim that the underlying institution publishes no relevant evidence. Indicator observations are shown as a separate normalized route and are not added to direct-domain totals.
Market context
No definition, measurement, policy record, or cited report currently connects this source to a market profile.
Measurement releases
This source currently contributes through policy chronology, report citation, or industry evidence rather than market definitions, observations, or participant shares.
Official record chronology
This source is not currently attached to an enforcement, inquiry, remedy, settlement, or agency-report event in the public chronology.
Research reuse
No published Antitrust Radar report currently lists this record in its source basis. The source may still support measurement, policy, or industry data.
Industry observatory
This source does not back the Census national industry-concentration tables in the current release. Its other evidence-domain counts remain independently inspectable.
Citation custody
U.S. Department of Justice and Federal Trade Commission, 2023 Merger Guidelines, released December 18 2023.
Joint agency guidelines describing frameworks used to review mergers including structural presumptions based on post-merger HHI and changes in HHI.
Canonical source citation
U.S. Department of Justice and Federal Trade Commission, 2023 Merger Guidelines, released December 18 2023. Available at https://www.justice.gov/atr/2023-merger-guidelines. Accessed Aug 5, 2026. Antitrust Radar source record doj-ftc-merger-guidelines-2023: https://antitrustradar.org/sources/doj-ftc-merger-guidelines-2023
Source-scoped data packet
Citation, publisher, access, and license
Product, geography, denominator, and limits
HHI, market size, status, and methodology
Firm shares, rank, aggregate flags, and custody
Dated enforcement and policy chronology
Exact organization roles in official records
Bounded pre, event-year, and post HHI context
Published observatory work citing this source
Interpretation boundary
A source dossier documents how this observatory uses one public record. It does not endorse every claim in that record, make unlike measures comparable, or extend the source beyond its stated product, geography, population, and vintage.