Antitrust Radar
Market atlas

Definition-aware research lab

Market comparison studio

Compare concentration within each market's stated product, geography, and denominator. Disclosure gaps and differing confidence levels remain visible.

Profiles12Public market records
HHI anchors26Source-backed years
Selected3Shareable comparison

Comparable here

Within-profile time anchors, published screens, evidence counts, source posture, and each definition contract.

Never collapsed here

Different products, geographies, denominators, and metric families are never averaged into a synthetic finding.

Selection console

Choose two to four market profiles

Every selection updates this evidence workspace and its shareable URL while preserving each market-definition contract.

3/4 selected

Keep at least 2 profiles selected; add up to 4.

Market structure plane

Locate the selected markets in the public evidence universe

Horizontal position is latest published HHI. Vertical position shows either leading-firm share or CR4. Every point retains its own product boundary and denominator.

5 of 12 plotted
Universe12public profiles
Charted5Top firm + HHI
Selected on plane23 selected total
Outside plane7definitions or gaps
Top firm
Latest published HHI
Below 1,8001,800-2,500Above 2,500Selected comparison
Digital platforms 4Food and agriculture 1Health care 1Health insurance 1Real estate 1Software 1Telecommunications 2Transportation 1

Outside this coordinate system

7
17 linked public sources. Missing values are never assigned zero coordinates.Definition method

Latest public screens

Compare what each profile can support

Values are charted only when published and permitted for screening by the profile's market-definition contract.

Selected33 sectors
Metric families2Definitions retained
HHI published33 charted
Longitudinal3Profiles with 2+ HHI anchors
Public sources3Distinct selected sources

Latest HHI

Scale: 0 to 10,000

3/3 plotted

The chart is a side-by-side public screen, not a claim that these products share one relevant antitrust market or one interchangeable measurement basis.

Longitudinal anchors

Trace change inside each profile

Each history is indexed to its own first released HHI anchor, so direction and relative movement remain visible without placing unlike market levels on one shared HHI scale. Select any point to recover its exact published HHI and source.

3 trend-ready6 observed years
Selected public anchorWireless service2023 / baseline 2017
Index
114.3
Published HHI
3,550
From baseline
+444
Verified / High confidenceBaseline HHI 3,106 in 2017Federal Communications Commission
Search engines, 2023: index 100, published HHI 7,950, change 0Search engines, 2024: index 95.3, published HHI 7,575, change -375Search engines, 2025: index 95.5, published HHI 7,589, change -361Search engines, 2026: index 92.6, published HHI 7,359, change -591Browsers, 2023: index 100, published HHI 3,664, change 0Browsers, 2024: index 105, published HHI 3,846, change +182Browsers, 2025: index 101.5, published HHI 3,720, change +56Browsers, 2026: index 98.6, published HHI 3,612, change -52Wireless service, 2017: index 100, published HHI 3,106, change 0Wireless service, 2021: index 115.8, published HHI 3,596, change +490Wireless service, 2023: index 114.3, published HHI 3,550, change +444
Search engines2023-2026DecreasingBrowsers2023-2026StableWireless service2017-2023Increasing

Definition matrix

Keep the denominator beside the number

Product boundary, geography, measurement basis, and exclusions determine what each concentration screen means.

Market definition method

Public proxy

Search engines

Usage shares · Screen only

Product boundary
All-platform search engine usage
Geography
United States
Measurement
StatCounter search engine referral usage share
Denominator
Observed U.S. search engine usage in each reported monthly snapshot
Included
Named search engines and a residual Other category that closes the public share table to 100 percent
Excluded
Search query volume, search advertising revenue, and other digital advertising activity
Inspect full contract

Public proxy

Browsers

Usage shares · Screen only

Product boundary
All-platform browser usage
Geography
United States
Measurement
StatCounter browser page-view usage share
Denominator
Observed U.S. browser usage in each reported monthly snapshot
Included
Named browsers and a residual Other category that closes the public share table to 100 percent
Excluded
Unique browser users, browser revenue, operating-system share, and tying conduct
Inspect full contract

Agency defined

Wireless service

Agency HHI · Screen only

Product boundary
Commercial mobile wireless service represented in FCC competition reporting
Geography
FCC economic areas summarized as a weighted national concentration measure
Measurement
FCC source-reported HHI by economic area
Denominator
The service and provider universe used in the FCC mobile wireless concentration screen
Included
Provider concentration captured by the FCC-reported economic-area HHI
Excluded
A national carrier-share table is not reconstructed from the reported HHI
Inspect full contract

Evidence readiness

Compare the record behind each screen

Coverage counts are descriptive. Missing participant rows or HHI anchors remain research needs, not zeroes.

3 selected profiles
MarketLatestObservationsParticipant yearsSourcesPolicy eventsReportsStatusConfidence
Search engines202644133Estimated publicMedium
Browsers202644133Estimated publicMedium
Wireless service202330122VerifiedHigh
Markets JSONLatest selected screensMarkets CSVComparison-ready tableDefinitions JSONBoundary contractsObservations JSONLongitudinal anchorsObservations CSVNotebook-ready historyPolicy events JSONSelected public docket
Market Comparison Studio | Antitrust Radar