How are notification volume, transaction mix, review intensity, official outcomes, and observed market structure changing without conflating process with effect?
AR-T06 / institutional research topic
Merger review
Merger Review
How are notification volume, transaction mix, review intensity, official outcomes, and observed market structure changing without conflating process with effect?Keep federal filing, transaction-size, review-process, structural-screen, and official-record evidence in separate but connected lanes.
- Publications3editions
- Agenda questions2questions
- Issue programs2programs
- Public datasets7datasets
- Analysis routes5routes
- Publications
- 3
- 3 permanent series
- Agenda questions
- 2
- 2 issue programs
- Public datasets
- 7
- 246 declared rows
- Source links
- 16
- reviewed through Jul 20, 2026
Topic boundary. Notification counts, Second Request rates, concentration screens, complaints, settlements, and abandonments have different denominators and meanings. None alone establishes transaction effects or legal merit.
Evidence standardInstitutional research topicMerger Review3 publications / 3 active releases / 5 evidence lanes
Research contract
Question, mandate, boundary, and evidence need
Keep federal filing, transaction-size, review-process, structural-screen, and official-record evidence in separate but connected lanes.
Notification counts, Second Request rates, concentration screens, complaints, settlements, and abandonments have different denominators and meanings. None alone establishes transaction effects or legal merit.
Transaction-level industry and size, thresholds, exemptions, agency allocation, review timing, outcomes, remedies, market shares, entry, price, quality, and capacity.
Publication chronology
How this subject entered the public record.
Every institutional release date remains on the axis, including dates with no publication assigned to this topic.- Active releases
- 3 / 6
- Topic publications
- 3
- Largest release
- 1
Publication register
3 citable publications
Exact theme memberships across 3 permanent series.State of CompetitionAR-SC1Methods and MeasuresAR-MM0Public Data NotesAR-DN0Research BriefsAR-RB1Competition InsightsAR-CI1International BriefsAR-ICP0
- AR-CI-2026-07Competition Insights
Domain readout / United States
Reported HSR volume and the Second Request rate both moved lower in FY2025.
Two federal program measures preserve their fiscal-year denominator and procedural meaning without converting review activity into a judgment about transactions or agency performance.- Published
- Aug 12, 2026
- Sources reviewed
- Jul 18, 2026
- Evidence
- 2
- Source links
- 1
- AR-RB-2026-05Competition Research Briefs
Research brief / United States
The Federal Merger Review Pipeline, 2016-2025
A ten-year map of federal merger notifications and review procedure with exact monthly and transaction-size evidence, source custody, and permanent outcome guardrails.- Published
- Jul 20, 2026
- Sources reviewed
- Jul 18, 2026
- Evidence
- 1
- Source links
- 1
- AR-SC-2026-01State of Competition
State of competition report / United States
The U.S. Competition Landscape
A source-backed state-of-competition briefing across markets, industries, state systems, local banking screens, mergers, and enforcement, with every system kept in its own analytical universe.- Published
- Jul 19, 2026
- Sources reviewed
- Jul 19, 2026
- Evidence
- 14
- Source links
- 14
Evidence systems
Questions, programs, datasets, and analysis routes
Research agenda
2 bounded questions- ReviewHow did transaction mix, clearance, adjusted denominators, and agency review practice change alongside the observed rate?Hart-Scott-Rodino program / Second Request rate
- FilingsHow did filing mix, transaction size, thresholds, exemptions, and macroeconomic conditions change alongside notification volume?Hart-Scott-Rodino program / Reported HSR transactions
Issue programs
2 editorial programs- 105 evidence linksDigital platform gatewaysHow do defaults, distribution agreements, data access, and adjacent-platform positions shape entry across separately measured digital systems?
- 23 evidence linksTransportation networksHow do route-level entry, capacity, airport constraints, and consolidation shape passenger choice beyond national shares?
Public datasets
7 reusable contracts- 10 rows / 15 fieldsHSR annual activityOfficial fiscal-year premerger notifications, filings, adjusted review denominators, Second Requests, and early termination outcomes for FY2016-FY2025.
- 120 rows / 8 fieldsHSR monthly activityFiscal-month transaction and filing counts for the federal premerger notification program across FY2016-FY2025.
- 7 rows / 14 fieldsHSR transaction sizesFY2025 adjusted transaction counts, clearances, and Second Requests across seven reported transaction-value bands.
- 14 rows / 16 fieldsPolicy eventsOfficial complaints, decisions, inquiries, remedies, reports, and settlements joined to the markets they contextualize and to one explicitly declared proceeding chronology.
- 31 rows / 11 fieldsNamed policy-record edgesOne inspectable official-record relationship per named organization, with role, event stage, market context, source custody, and inference guardrails.
- 18 rows / 11 fieldsEvent evidence windowsDerived strict before, timing-ambiguous event-year, and strict after HHI anchors for every policy-event and market relationship.
- 46 rows / 27 fieldsCompetition monitor signalsLatest-to-prior observed comparisons across definition-stable market series, strict Census sector medians, banking and fixed-broadband geographic screens, Census business dynamics, and federal HSR activity, with separate periods, units, evidence counts, sources, and non-composite guardrails.
Analysis routes
5 declared handoffs- 01 / profileMerger activityHSR notification and review history
- 02 / researchMerger structure labObserved shares and bounded scenarios
- 03 / dataOfficial recordsNamed complaints, decisions, and remedies
- 04 / compareCompare recordsStages, entities, and evidence windows
- 05 / researchMerger agendaFiling and review-process questions
Topic collection citation
Open publication citations Antitrust Radar. (2026). Merger Review [Research topic]. Antitrust Radar.