Antitrust Radar

Long-form reports and research briefs

Our published research on market concentration and competition policy, free to read and reuse. Each report states its question, what the data can and cannot show, and where every number comes from.

Briefings
11
open publications
Series
4
versioned registers
Markets
12
linked profiles
Immediate
2
action memos

11 public briefings across market structure, enforcement, and competition policy.

Housing ownership2 briefings on local-market data gapsHHI method9 briefings explain concentration thresholdsDigital gateways3 briefings route platform evidence

Report evidence desk

Briefings ranked for public use.

Evidence depth, market scope, publication readiness, and policy priority in one accountable record.

Open reports
11
Source links
37
Linked markets
12
Immediate memos
2

Research comparison

11 briefings
Showing 6 of 11 briefings

Flagship research

AR-SC-2026-01 / Current edition

The U.S. Competition Landscape

State of Competition 2026: five evidence systems, no single score

Central finding

Public evidence does not support a single national competition score.

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.

Sources
14
Markets
8
Chapters
7
National evidence atlasDefined markets / industry structure / geography / mergers / enforcement

Current editions

Latest research briefings

Open shelf
  1. 01AR-RB-2026-07 / Research briefState Individual Insurance Concentration, 20241 source / Jul 24, 2026
  2. 02AR-RB-2026-06 / Research briefFixed Broadband Concentration Across Geographic Scales, 2020-20241 source / Jul 24, 2026
  3. 03AR-RB-2026-05 / Research briefThe Federal Merger Review Pipeline, 2016-20251 source / Jul 20, 2026
  4. 04AR-RB-2026-04 / Research briefBusiness Dynamism Across U.S. Sectors, 1978-20232 sources / Jul 20, 2026

Research desk

Evidence first

Search briefings, inspect their source basis, and follow the route from public data to market profiles and policy asks.

Methods
Research cadence

Jul 2026

Latest briefing cycle in the public research library.

11

visible

1

sources

Latest briefings
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Type

Sector

Showing 11 report briefings, 12 linked markets, 37 source links, and 2 urgent memos. No filters applied.

11

reports

12

linked markets

37

source links

2

urgent memos

Showing 6 of 11 briefings
Research briefNear-term policy memo

State Individual Insurance Concentration, 2024

A source-backed research brief mapping the 2024 KFF state concentration cross-section for the ACA-regulated individual health insurance market, including HHI, leading-insurer share, rival depth, regional variation, and the public evidence needed for stronger competition analysis.

Open report

Publication readiness

Reusable with caveats

Checks whether this briefing can be cited, audited, exported, and routed into public action.

93%

6/7 ready

Citable releasereadyPublic date Jul 24, 2026
Public source basiscaution1 source link needs review
Market scopeready1 linked market
Evidence needs namedready5 next-step needs visible
Reusable data exportsreadyJSON, CSV, and source-ledger routes exposed
Public action routeready4 asks routed to advocacy
Method visiblereadyMethodology handoff included
View audit trail6/7 checks
Citable releasereadyPublic date Jul 24, 2026
Public source basiscaution1 source link needs review
Market scopeready1 linked market
Evidence needs namedready5 next-step needs visible
Reusable data exportsreadyJSON, CSV, and source-ledger routes exposed
Public action routeready4 asks routed to advocacy
Method visiblereadyMethodology handoff included

Policy audience

HHS, CMS, FTC, DOJ, Congress, state insurance regulators, state attorneys general, and competition researchers

Evidence needed next

State insurer identities, enrollment shares, and common controlStable plan, issuer, service-area, and jurisdiction identifiersAnnual entry, exit, merger, exchange, ownership, and revision historiesPremium, actuarial value, claims, denial, network, quality, and switching outcomes

Selected briefing

Jul 2026

date

Near-term

priority

1

source

1

market

Individual insurance

Policy thesis

Individual-insurance oversight should use the 2024 state concentration cross-section to prioritize disclosure and research, then connect structure to insurer identity, ownership, entry, plan design, networks, prices, quality, switching, and consumer outcomes before assigning cause or legal liability.

Public asks

Publish complete state insurer-share tables

Release insurer identities, enrollment shares, common-control links, denominator rules, suppression flags, and reproducible HHI calculations for every jurisdiction under stable identifiers.

Build a comparable annual market panel

Publish annual state vintages with plan entry, exit, mergers, service areas, exchange participation, ownership changes, revisions, and product-definition changes kept explicit.

Connect structure to public outcomes

Link stable state, insurer, and plan identifiers to premiums, actuarial value, claims, denials, network breadth, quality, enrollment, switching, complaints, and geographic access.

Source basis

KFF 2024 Individual Insurance Market Competition data for the 50 states and District of Columbia, including source-reported HHI, leading-insurer share, and the count of insurers with more than 5 percent of each jurisdiction's ACA-regulated individual market.

Individual insurance

Reader packet

Citable line

State Individual Insurance Concentration, 2024 (2026-07-24) links 1 source to 1 market (Individual insurance) and carries a near-term public-policy priority.

Briefing packetcite, audit, actReport JSON1 source refReport CSVspreadsheet-readySource ledgercited records onlyData consolefilterable report rowsLead marketIndividual insuranceAction briefmarket-scoped askMethodologylimits and caveats
Research export

Notebook starter

const reportPacket = await fetch("/api/public/reports?report=state-individual-insurance-concentration-2024").then((response) => response.json()); const leadMarket = await fetch("/api/public/markets?market=us-aca-individual-health-insurance").then((response) => response.json()); const sourceTrail = await fetch("/api/public/sources?market=us-aca-individual-health-insurance").then((response) => response.json()); console.table(reportPacket.rows); console.table(leadMarket.rows); console.table(sourceTrail.rows);