Antitrust Radar

Public competition desk

U.S. competition observatory

A one-page view of concentration across markets, where the evidence is missing, and which firms are connected. Use the underlying sources to investigate questions, not to infer a legal violation from a score.

1 markets45 sources1 HHI gaps

Observatory indexChoose the evidence universe
4 public domains

Research desk

See who holds markets and where

Read firm-share structure beside state conditions, sector signals, and auditable market rows.

1in view1filters1sources
Refine market sliceSector, geography, concentration, vintage, status, and confidence1 active1 in view

Sector priority board

Where concentration becomes policy work

Sectors are ranked by public HHI signals, data completeness, and the next public-interest action needed to keep markets fair.

Sectors

1

Profiles

1

Review

0

Gaps

1

Transportation

1 market profile

Evidence build

Pending

Avg HHI

0

High

1

Gaps

HHI intensityN/A
Profile coverage1

Public action

Publish reusable firm-level data

Missing public data should be converted into disclosure asks.

Focus this sector

Markets at a glance

Only sourced metrics are shown in ranking views.

Each row is a public evidence packet: exact metrics, source status, data freshness, action cue, and a machine-readable route. No composite score is used; signal basis lists the published metric flags behind each cue.

1

ranked rows

1

high concern

1

data gaps

1

source-backed

#1 · Transportation

U.S. domestic airline passengers

United States

HHI

Withheld

CR4

69.0%

Top firm

17.8%

Signal basis

  • HHI withheld
  • CR4 >= 60%
  • Data incomplete
Not calculatedIncomplete dataDisclose data

Bureau of Transportation Statistics

1 source · reviewed May 16, 2026

Request firm-level shares and reusable public tables.

Profile
Reuse evidenceCite · API · files
JSONCSV
Dashboard | Antitrust Radar