Antitrust Radar

Cross-domain evidence graph

Observatory atlas

Follow documented connections between markets, firms, places, publications, and sources. A connection shows a recorded relationship, not that two measures describe the same market.

Explore the graphRank profilesCompare profiles
More atlas tools4 exact routes
Live family topologyMeasurement

Current focusSearch engines18,549 records / 13 family pairs

Measurement topology centered on Search enginesLine width represents declared relationship count. Line color identifies relationship layer. Circle size represents the number of canonical profiles in each family.Places to Indicators: 6,412 declared links. Measurement 6,412.Places to Sources: 3,378 declared links. Measurement 3,378.Places to Places: 3,204 declared links. Measurement 3,204.Industries to Sources: 1,954 declared links. Measurement 1,954.Industries to Industries: 1,849 declared links. Measurement 1,849.Industries to Indicators: 1,576 declared links. Measurement 1,576.Markets to Products: 55 declared links. Measurement 55.Indicators to Sources: 48 declared links. Measurement 48.Markets to Indicators: 21 declared links. Measurement 21.Markets to Sources: 20 declared links. Measurement 20.Industries to Places: 17 declared links. Measurement 17.Markets to Industries: 12 declared links. Measurement 12.Sources to Sources: 3 declared links. Measurement 3.Markets12Markets: 12 canonical profiles, 108 links in Measurement, 171 links overall. Documented antitrust and screening definitionsProducts55Products: 55 canonical profiles, 55 links in Measurement, 85 links overall. Source-labeled market participantsOperators20Operators: 20 canonical profiles, 0 links in Measurement, 32 links overall. Official product attributionsIndustries1,866Industries: 1,866 canonical profiles, 5,408 links in Measurement, 5,408 links overall. Census hierarchy and screening contextIssues6Issues: 6 canonical profiles, 0 links in Measurement, 28 links overall. Editorial competition research programsTopics8Topics: 8 canonical profiles, 0 links in Measurement, 171 links overall. Institutional research subjects and exact evidence membershipsQuestions46Questions: 46 canonical profiles, 0 links in Measurement, 104 links overall. Public research questions anchored to exact signals and indicatorsPlaces3,270Places: 3,270 canonical profiles, 13,011 links in Measurement, 13,125 links overall. National context, bounded state and local screens, and international regulatory profilesIndicators30Indicators: 30 canonical profiles, 8,057 links in Measurement, 8,105 links overall. Canonical measurement dossiersRecords14Records: 14 canonical profiles, 0 links in Measurement, 63 links overall. Dated official enforcement recordsNamed entities21Named entities: 21 canonical profiles, 0 links in Measurement, 37 links overall. Organizations named in official recordsPublications85Publications: 85 canonical profiles, 0 links in Measurement, 413 links overall. Reports, data dispatches, and international evidence briefsSources45Sources: 45 canonical profiles, 5,403 links in Measurement, 5,588 links overall. Public evidence custody
Measurement compact topology centered on Search enginesTap a family or weighted route to inspect its declared neighborhood, then use the dossier action below to open the complete record. Circle size represents canonical profile count.Places to Indicators: 6,412 declared links. Measurement 6,412.Places to Sources: 3,378 declared links. Measurement 3,378.Places to Places: 3,204 declared links. Measurement 3,204.Industries to Sources: 1,954 declared links. Measurement 1,954.Industries to Industries: 1,849 declared links. Measurement 1,849.Industries to Indicators: 1,576 declared links. Measurement 1,576.Markets to Products: 55 declared links. Measurement 55.Indicators to Sources: 48 declared links. Measurement 48.Markets to Indicators: 21 declared links. Measurement 21.Markets to Sources: 20 declared links. Measurement 20.Industries to Places: 17 declared links. Measurement 17.Markets to Industries: 12 declared links. Measurement 12.Sources to Sources: 3 declared links. Measurement 3.Markets12Markets: 12 canonical profiles, 108 links in Measurement, 171 links overall. Documented antitrust and screening definitionsProducts55Products: 55 canonical profiles, 55 links in Measurement, 85 links overall. Source-labeled market participantsOperators20Operators: 20 canonical profiles, 0 links in Measurement, 32 links overall. Official product attributionsIndustries1.9kIndustries: 1,866 canonical profiles, 5,408 links in Measurement, 5,408 links overall. Census hierarchy and screening contextIssues6Issues: 6 canonical profiles, 0 links in Measurement, 28 links overall. Editorial competition research programsTopics8Topics: 8 canonical profiles, 0 links in Measurement, 171 links overall. Institutional research subjects and exact evidence membershipsQuestions46Questions: 46 canonical profiles, 0 links in Measurement, 104 links overall. Public research questions anchored to exact signals and indicatorsPlaces3.3kPlaces: 3,270 canonical profiles, 13,011 links in Measurement, 13,125 links overall. National context, bounded state and local screens, and international regulatory profilesIndicators30Indicators: 30 canonical profiles, 8,057 links in Measurement, 8,105 links overall. Canonical measurement dossiersRecords14Records: 14 canonical profiles, 0 links in Measurement, 63 links overall. Dated official enforcement recordsNamed entities21Named entities: 21 canonical profiles, 0 links in Measurement, 37 links overall. Organizations named in official recordsPublications85Publications: 85 canonical profiles, 0 links in Measurement, 413 links overall. Reports, data dispatches, and international evidence briefsSources45Sources: 45 canonical profiles, 5,403 links in Measurement, 5,588 links overall. Public evidence custody
Canonical nodes5,4785433 public profiles
Declared edges19,193exact encoded links
Node families13bounded domains
Inferred links0name-only joins
Encoded hereProfile-to-indicator observations, issue-program scope, source custody, market participation, official attribution, declared industry context, publication scope, and dated policy relationships.
Never inferred hereSubstitutability, ownership, control, liability, causation, or comparability across unlike measures.
Read evidence standard

Graph census · Measurement

Who the Atlas connects

Every lane is an exact family-pair contract in the active semantic lens, ranked by encoded edge count.

6 of 13families connectedTop 8 routes carry 99.6% of active-layer edges.

Active-lens edges
18,549
Measurement
Family-pair routes
13
exact family contracts
Cross-family pairs
10
between unlike families
Self-family pairs
3
within one family
Open the complete relationship matrixScan all 91 possible family contracts by edge volume or source custody, including explicit structural zeros.
  1. 01PlacesIndicatorsMeasurement layer · open complete contract dossier6,41234.6%
  2. 02PlacesSourcesMeasurement layer · open complete contract dossier3,37818.2%
  3. 03PlacesPlacesMeasurement layer · open complete contract dossier3,20417.3%
  4. 04IndustriesSourcesMeasurement layer · open complete contract dossier1,95410.5%
  5. 05IndustriesIndustriesMeasurement layer · open complete contract dossier1,84910.0%
  6. 06IndustriesIndicatorsMeasurement layer · open complete contract dossier1,5768.5%
  7. 07MarketsProductsMeasurement layer · open complete contract dossier550.3%
  8. 08IndicatorsSourcesMeasurement layer · open complete contract dossier480.3%
Inspect the remaining 5 family-pair routes73 links · 0.4% of active-layer edges
  1. 09MarketsIndicatorsMeasurement layer · open complete contract dossier210.1%
  2. 10MarketsSourcesMeasurement layer · open complete contract dossier200.1%
  3. 11IndustriesPlacesMeasurement layer · open complete contract dossier17<0.1%
  4. 12MarketsIndustriesMeasurement layer · open complete contract dossier12<0.1%
  5. 13SourcesSourcesMeasurement layer · open complete contract dossier3<0.1%
Bar length uses a logarithmic scale so low-volume lanes remain visible.Counts and shares describe encoded relationships, not economic importance, substitutability, control, liability, or antitrust harm.

Graph query

Build a declared relationship neighborhood

Network depth
MarketsU.S. search engine usageMeasurement / 1 hop / all neighbors
Semantic classificationAll 39 relationship contracts remain distinctRead ontology

Choose one exact semantic contract to rebuild the topology, neighborhood, diagnostics, ledger, and public exports around only that declared edge type.

Focused evidence graph

Search engines

13 connected nodes in this bounded slice
Visible nodes
13
of 13
Visible edges
15
declared links
Direct links
12
from focus
Hidden nodes
0
plot cap only
Direct neighborhood12
MarketsU.S. search engine usageUnited States / 2026
Latest HHI
7,359
Status
estimated_public
Declared links
21
Latest year
2026

All-platform U.S. search engine usage share from StatCounter Global Stats for April 2026. The market is an observed usage-share proxy, not search advertising revenue.

Open canonical profile
Analysis handoff3
3 measured indicatorsU.S. search engine usage12 exact rows / 2023-2026 / 1 source
Chart lenses
Direct relationships12

Direct relationship fingerprint

How Search engines is declared in the Atlas

Measurement / direct focus links / no composite score
Counterparties
12
Unique canonical endpoints
Encoded links
12
Exact focus edges
Source custody
100%
12 source-bearing links
Profile families
4
Direct counterparty types
Counterparty compositionDirect nodes by profile family
Unique endpoints / active layer
Products7 encoded edges
7
Indicators3 encoded edges
3
Industries1 encoded edge
1
Sources1 encoded edge
1
Declared counterpartiesCarry exact endpoints into deeper analysis
12 available
01
1 edge1 source-bearing
02
1 edge1 source-bearing
03
1 edge1 source-bearing
04
1 edge1 source-bearing
05
1 edge1 source-bearing
06
1 edge1 source-bearing
Showing 6 of 12 exact direct counterparties.
Direct layer mixMeasurement12Organization0Enforcement0Research0
Encoded confidencehigh0medium7bounded4low1

Relationship ledger

Every plotted line remains an inspectable record

15 edges survive the current focus, depth, node-type, layer, and semantic-type contract.

MeasurementIndicator source custodyindicator source

CR4 is the sum of the four largest sourced non-aggregate participant shares in this released anchor.

StatCounter Global Stats / Search engine market share in United States of America April 2023lowSource
MeasurementIndicator source custodyindicator source

HHI is computed from six named StatCounter shares and a residual Other category that closes coverage to 100 percent.

StatCounter Global Stats / Search engine market share in United States of America April 2023mediumSource
MeasurementIndicator source custodyindicator source

Largest sourced non-aggregate participant share in the 2023 released anchor (Google Search).

StatCounter Global Stats / Search engine market share in United States of America April 2023lowSource
MeasurementDeclared Census screenindustry screen

U.S. search engine usage uses NAICS 518210 as declared economy-wide context while preserving a separate product and geographic definition.

Market definition crosswalkmediumSource
MeasurementSource-labeled participantmarket participation

Bing appears in the Search engines source row for 2026 at 9.82%.

Search engine market share in United States of America April 2026mediumSource
MeasurementSource-labeled participantmarket participation

DuckDuckGo appears in the Search engines source row for 2026 at 1.74%.

Search engine market share in United States of America April 2026mediumSource
MeasurementSource-labeled participantmarket participation

Ecosia appears in the Search engines source row for 2026 at 0.11%.

Search engine market share in United States of America April 2026mediumSource
MeasurementSource-labeled participantmarket participation

Google Search appears in the Search engines source row for 2026 at 85.16%.

Search engine market share in United States of America April 2026mediumSource
MeasurementSource-labeled participantmarket participation

Other search engines appears in the Search engines source row for 2026 at 0.12%.

Search engine market share in United States of America April 2026lowSource
MeasurementSource-labeled participantmarket participation

Yahoo Search appears in the Search engines source row for 2026 at 2.67%.

Search engine market share in United States of America April 2026mediumSource
MeasurementSource-labeled participantmarket participation

Yandex appears in the Search engines source row for 2026 at 0.38%.

Search engine market share in United States of America April 2026mediumSource
MeasurementMarket evidence custodymarket source

Search engine market share in United States of America, April 2023-April 2026 supports the profile's definition, observation, participant row.

StatCounter Global StatsboundedSource

Showing 8 of 15 exact relationships. The complete filtered ledger remains available in CSV.

3 additional exact edges are available in JSON and CSV.

Graph contract

Relationship families stay separate

The atlas joins routes through encoded custody and context, never through name resemblance or an inferred corporate, legal, or causal relationship.

The atlas exposes only relationships declared in the current public data. A link or issue grouping does not make unlike measures comparable, establish ownership or control, define an antitrust market, assign liability, or show that a policy event caused an economic outcome.

Reusable graph packet

Carry node and edge custody into analysis

The packet preserves node type, canonical route, relationship family, source link, evidence label, confidence, and edge-specific guardrail.

Data CubeExact U.S. search engine usage observation sliceVizBuilderMarket HHI / trend lensJSON graph/api/public/atlas?focus=market%3Amkt-search&layer=measurement&depth=1CSV edge ledgerComplete exact relationship slice