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 topologyResearch

Current focusSocial referrals: Four-pa...547 records / 9 family pairs

Research topology centered on Social referrals: Four-pa...Line width represents declared relationship count. Line color identifies relationship layer. Circle size represents the number of canonical profiles in each family.Publications to Sources: 169 declared links. Research 169.Places to Publications: 114 declared links. Research 114.Topics to Publications: 97 declared links. Research 97.Topics to Questions: 58 declared links. Research 58.Questions to Indicators: 46 declared links. Research 46.Markets to Publications: 33 declared links. Research 33.Issues to Topics: 16 declared links. Research 16.Markets to Issues: 12 declared links. Research 12.Indicators to Sources: 2 declared links. Research 2.Markets12Markets: 12 canonical profiles, 45 links in Research, 171 links overall. Documented antitrust and screening definitionsProducts55Products: 55 canonical profiles, 0 links in Research, 85 links overall. Source-labeled market participantsOperators20Operators: 20 canonical profiles, 0 links in Research, 32 links overall. Official product attributionsIndustries1,866Industries: 1,866 canonical profiles, 0 links in Research, 5,408 links overall. Census hierarchy and screening contextIssues6Issues: 6 canonical profiles, 28 links in Research, 28 links overall. Editorial competition research programsTopics8Topics: 8 canonical profiles, 171 links in Research, 171 links overall. Institutional research subjects and exact evidence membershipsQuestions46Questions: 46 canonical profiles, 104 links in Research, 104 links overall. Public research questions anchored to exact signals and indicatorsPlaces3,270Places: 3,270 canonical profiles, 114 links in Research, 13,125 links overall. National context, bounded state and local screens, and international regulatory profilesIndicators30Indicators: 30 canonical profiles, 48 links in Research, 8,105 links overall. Canonical measurement dossiersRecords14Records: 14 canonical profiles, 0 links in Research, 63 links overall. Dated official enforcement recordsNamed entities21Named entities: 21 canonical profiles, 0 links in Research, 37 links overall. Organizations named in official recordsPublications85Publications: 85 canonical profiles, 413 links in Research, 413 links overall. Reports, data dispatches, and international evidence briefsSources45Sources: 45 canonical profiles, 171 links in Research, 5,588 links overall. Public evidence custody
Research compact topology centered on Social referrals: Four-pa...Tap 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.Publications to Sources: 169 declared links. Research 169.Places to Publications: 114 declared links. Research 114.Topics to Publications: 97 declared links. Research 97.Topics to Questions: 58 declared links. Research 58.Questions to Indicators: 46 declared links. Research 46.Markets to Publications: 33 declared links. Research 33.Issues to Topics: 16 declared links. Research 16.Markets to Issues: 12 declared links. Research 12.Indicators to Sources: 2 declared links. Research 2.Markets12Markets: 12 canonical profiles, 45 links in Research, 171 links overall. Documented antitrust and screening definitionsProducts55Products: 55 canonical profiles, 0 links in Research, 85 links overall. Source-labeled market participantsOperators20Operators: 20 canonical profiles, 0 links in Research, 32 links overall. Official product attributionsIndustries1.9kIndustries: 1,866 canonical profiles, 0 links in Research, 5,408 links overall. Census hierarchy and screening contextIssues6Issues: 6 canonical profiles, 28 links in Research, 28 links overall. Editorial competition research programsTopics8Topics: 8 canonical profiles, 171 links in Research, 171 links overall. Institutional research subjects and exact evidence membershipsQuestions46Questions: 46 canonical profiles, 104 links in Research, 104 links overall. Public research questions anchored to exact signals and indicatorsPlaces3.3kPlaces: 3,270 canonical profiles, 114 links in Research, 13,125 links overall. National context, bounded state and local screens, and international regulatory profilesIndicators30Indicators: 30 canonical profiles, 48 links in Research, 8,105 links overall. Canonical measurement dossiersRecords14Records: 14 canonical profiles, 0 links in Research, 63 links overall. Dated official enforcement recordsNamed entities21Named entities: 21 canonical profiles, 0 links in Research, 37 links overall. Organizations named in official recordsPublications85Publications: 85 canonical profiles, 413 links in Research, 413 links overall. Reports, data dispatches, and international evidence briefsSources45Sources: 45 canonical profiles, 171 links in Research, 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 · Research

Who the Atlas connects

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

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

Active-lens edges
547
Research
Family-pair routes
9
exact family contracts
Cross-family pairs
9
between unlike families
Self-family pairs
0
within one family
Open the complete relationship matrixScan all 91 possible family contracts by edge volume or source custody, including explicit structural zeros.
  1. 01PublicationsSourcesResearch layer · open complete contract dossier16930.9%
  2. 02PlacesPublicationsResearch layer · open complete contract dossier11420.8%
  3. 03TopicsPublicationsResearch layer · open complete contract dossier9717.7%
  4. 04TopicsQuestionsResearch layer · open complete contract dossier5810.6%
  5. 05QuestionsIndicatorsResearch layer · open complete contract dossier468.4%
  6. 06MarketsPublicationsResearch layer · open complete contract dossier336.0%
  7. 07IssuesTopicsResearch layer · open complete contract dossier162.9%
  8. 08MarketsIssuesResearch layer · open complete contract dossier122.2%
Inspect the remaining 1 family-pair routes2 links · 0.4% of active-layer edges
  1. 09IndicatorsSourcesResearch layer · open complete contract dossier20.4%
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
QuestionsWhich participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?Research / 2 hops / 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

Social referrals: Four-pa...

33 connected nodes in this bounded slice
Visible nodes
33
of 33
Visible edges
50
declared links
Direct links
3
from focus
Hidden nodes
0
plot cap only
Direct neighborhood3
Focused declared relationship network for Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?Nodes are placed by graph distance from the selected profile. Color identifies node type. Lines identify encoded relationships in the selected semantic lens.Social referrals: Four-pa...94.4%Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Four-participant concentration ratio 94.4%Market StructureMarket Structure: Publication memberships 9Digital PlatformsDigital Platforms: Publication memberships 2Market CR4Tracked market CR4: Observation rows 21Digital platform gateways: Bounded markets 5Communications infrastructure: Bounded markets 2Food systems and buyer power: Bounded markets 1Health care intermediaries: Bounded markets 2Housing access and local power: Bounded markets 1Transportation networks: Bounded markets 1Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?: Herfindahl-Hirschman Index 3,612Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?: Herfindahl-Hirschman Index 5,337Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?: Herfindahl-Hirschman Index 7,359Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?: Herfindahl-Hirschman Index 4,995Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Four-participant concentration ratio 93.8%Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Four-participant concentration ratio 100.0%Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Four-participant concentration ratio 99.4%Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Leading-participant share 50.0%Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Leading-participant share 63.1%Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Leading-participant share 85.2%Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Leading-participant share 68.9%Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?: Herfindahl-Hirschman Index 1,501Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?: Herfindahl-Hirschman Index 3,550Which participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?: Four-participant concentration ratio 85.0%The U.S. Competition Landscape: Evidence sources 14Latest market-structure signals moved in both directions.: Exact signals 15Five Digital Gateways: Evidence sources 5Four digital usage systems traced four different structural paths.: Exact signals 12How HHI Helps Explain Market Concentration: Evidence sources 3Beef Meatpacking Buyer Power: Evidence sources 3Fixed Broadband Concentration Across Geographic Scales, 2020-2024: Evidence sources 1State Individual Insurance Concentration, 2024: Evidence sources 1State Banking Structure, 2015-2025: Evidence sources 1
Markets12Products55Operators20Industries1866Issues6Topics8Questions46Places3270Indicators30Records14Named entities21Publications85Sources45
QuestionsWhich participant-share changes account for the structural movement, and are the denominator and coverage stable across both anchors?Q41 / Shares / 2026
Four-participant concentration ratio
94.4%
Status
decreased / estimated public
Declared links
3
Latest year
2026

Social referrals moved from 95.1% in 2025 to 94.4% in 2026 (-0.71 percentage points). The latest encoded CR4 anchor is lower within this documented market series. The change alone does not identify a cause or establish competitive harm.

Open canonical profile
Analysis handoff1

No indicator row is keyed directly to this profile. These analytical contexts are one declared graph hop away.

Direct relationships3

Direct relationship fingerprint

How Social referrals: Four-pa... is declared in the Atlas

Research / direct focus links / no composite score
Counterparties
3
Unique canonical endpoints
Encoded links
3
Exact focus edges
Source custody
0%
0 source-bearing links
Profile families
2
Direct counterparty types
Counterparty compositionDirect nodes by profile family
Unique endpoints / active layer
Topics2 encoded edges
2
Indicators1 encoded edge
1
Declared counterpartiesCarry exact endpoints into deeper analysis
3 available
01
1 edge0 source-bearing
02
1 edge0 source-bearing
03
1 edge0 source-bearing
Direct layer mixMeasurement0Organization0Enforcement0Research3
Encoded confidencehigh0medium0bounded3low0

Relationship ledger

Every plotted line remains an inspectable record

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

ResearchNamed measurement familyquestion indicator

Q31 is framed by Four-participant concentration ratio and resolves to the canonical market-cr4 indicator dossier.

Research agenda metric contractbounded
ResearchNamed measurement familyquestion indicator

Q35 is framed by Four-participant concentration ratio and resolves to the canonical market-cr4 indicator dossier.

Research agenda metric contractbounded
ResearchNamed measurement familyquestion indicator

Q38 is framed by Four-participant concentration ratio and resolves to the canonical market-cr4 indicator dossier.

Research agenda metric contractbounded
ResearchNamed measurement familyquestion indicator

Q41 is framed by Four-participant concentration ratio and resolves to the canonical market-cr4 indicator dossier.

Research agenda metric contractbounded
ResearchNamed measurement familyquestion indicator

Q30 is framed by Four-participant concentration ratio and resolves to the canonical market-cr4 indicator dossier.

Research agenda metric contractbounded
ResearchDeclared issue-program membershiptopic issue

Digital platform gateways is explicitly included in the Digital Platforms institutional research contract.

Research topic issue contractbounded
ResearchDeclared issue-program membershiptopic issue

Communications infrastructure is explicitly included in the Market Structure institutional research contract.

Research topic issue contractbounded
ResearchDeclared issue-program membershiptopic issue

Digital platform gateways is explicitly included in the Market Structure institutional research contract.

Research topic issue contractbounded
ResearchDeclared issue-program membershiptopic issue

Food systems and buyer power is explicitly included in the Market Structure institutional research contract.

Research topic issue contractbounded
ResearchDeclared issue-program membershiptopic issue

Health care intermediaries is explicitly included in the Market Structure institutional research contract.

Research topic issue contractbounded
ResearchDeclared issue-program membershiptopic issue

Housing access and local power is explicitly included in the Market Structure institutional research contract.

Research topic issue contractbounded
ResearchDeclared issue-program membershiptopic issue

Transportation networks is explicitly included in the Market Structure institutional research contract.

Research topic issue contractbounded

Showing 8 of 50 exact relationships. The complete filtered ledger remains available in CSV.

38 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 Tracked market CR4 observation sliceVizBuilderMarket CR4 / ranking lensJSON graph/api/public/atlas?focus=question%3Amarket-cr4%3Aus-social-media-referral-traffic&layer=researchCSV edge ledgerComplete exact relationship slice