Mission / public duty

Fair markets are public infrastructure.

Antitrust Radar makes evidence about market concentration easy to find and reuse for journalists, researchers, and communities. We keep findings separate from proposals; concentration alone does not establish harm or unlawful conduct.

01Market harm7 at HHI 2,500+start with published structural screens 02Public records235,809 rowsinspect source-backed data 03Government action11 asksturn evidence into duty

We believe one of government's most important duties is to keep markets open, fair, and competitive. The United States is far from that standard. We make market power visible so public institutions can act.

Explore atlas Evidence standard

markets

HHI >= 2,500

data gaps

235,809

record rows

Public think tank protocolResearch, records, publication, and funding boundaries stay visible.

01 / Research agenda Research11 briefsQuestions stay tied to source gaps.02 / Source register Sources45 sourcesPublishers, dates, caveats, and confidence.03 / Open release Rows235,810 endpoint rows235,809 underlying records plus one catalog summary row.04 / Public memo Memo11 asksEvidence becomes agency-ready disclosure work.05 / Funding firewall FirewallOpen accessSupport funds capacity, not conclusions.

Public mandate

From market harm to public action, every step stays inspectable.

Concentration finding75%+U.S. industries since the late 1990sGrullon, Larkin & Michaely · Since late 1990s Agency threshold1,800high-concentration HHI thresholdDOJ/FTC (2023) · 2023 guidelines Affordability context22.7Mcost-burdened renters in 2024JCHS 2026 · 2024 data Supply context3.7Mestimated home shortfall, Q3 2024Freddie Mac · Q3 2024

01of 05

Selected mission stage

People

Begin with the prices, choices, access, and bargaining power people actually experience.

Current public signalprices + choice

Open people route

01FindStart with a real market 02MeasureShow the concentration screen 03ProveAttach sources to every claim 04PublishTurn evidence into public briefs 05ActMove government toward fair markets

National proof ledger

Inspect the claim before using it.

Each statistic keeps its period, scope, measure, source, and public use visible.

Concentration finding

75%+ U.S. industries since the late 1990s

with rising concentration since the late 1990s in published economy-wide research.

Period: Since late 1990s
Scope: U.S. industries
Measure: Change in concentration

Read carefully:An economy-wide historical finding, not a current concentration estimate for every individual market.

Public useScreen the sectors where market power should trigger public review.

Mission data packet

The mission is inspectable, downloadable, and action-ready.

Public-interest competition work should show its route. This packet links the mission claim to record rows, cited sources, public briefings, and the action queue that turns market power into government questions.

Open data console Summary JSON

Record rows235,809Open machine-readable market, metric, source, map, and report rows, excluding the summary endpoint.Source ledger45Inspect publishers, access dates, caveats, and source confidence.Public briefs11Read research briefings that keep evidence and policy routes together.Action queue11Move markets at HHI >= 2,500 and public data gaps into disclosure asks.

ClaimFair marketspublic duty Evidence45 sourcescitation trail Records235,809record rows + CSV Action11 asksoversight route

Operating standard

The site is built around a simple institutional promise: no claim without a route.

A credible antitrust observatory should not ask readers to trust vibes, screenshots, or hidden spreadsheets. It should let them inspect the source, understand the method, see the missing data, and act on a specific public ask.

Public evidence before claims

Every visible conclusion should route to sources, methods, confidence, or an explicit gap.

Competition as public duty

Government should keep markets open enough for people to compare, switch, bargain, and challenge abuse.

Housing exposes local power

Simple markets are not always competitive: housing choice is constrained by place, income, supply, ownership, and data opacity.

No paywall on public facts

Donations fund infrastructure and research capacity, not private access, rankings, findings, or report language.

Action queue

Markets that need public attention now.

11 asks

1Rental housingHHI withheld - incomplete - 4 sourcesReal estate Action brief

2Search enginesHHI 7,359 - estimated public - 1 sourcesDigital platforms Action brief

3Mobile operating systemsHHI 5,337 - estimated public - 1 sourcesDigital platforms Action brief

4Social referralsHHI 4,995 - estimated public - 1 sourcesDigital platforms Action brief

Use the observatory like public infrastructure.

Start with the housing data gap, inspect the source trail, then turn the missing local ownership evidence into a disclosure ask.

Housing profile Fund open work