Public data distribution

Bulk Data Library

Download the full tables as CSV or JSON. Each file comes with its column definitions, coverage, and source so it makes sense outside the site.

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Endpoint families: 628 research domains
Downloadable rows: 235,809current encoded tables
Declared fields: 1,483across all schemas
Open formats: 2JSON and CSV

Schema-volume field62 endpoint families

point size follows current row volumeReviewed through Aug 15, 2026

Full tableEach route returns the complete current endpoint unless filters are added.

Schema firstDeclared fields and a real sample row stay visible before download.

Current snapshotReview dates and measurement vintages remain separate contracts.

Audit release dates

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Filter the endpoint inventory, inspect the declared schema and sample row, then download the full current JSON or CSV table.

DomainVolumeSort

Datasets: 62of 62
Rows: 235,809current tables
Fields: 1,483declared columns
Domains: 8visible systems

Observatory system

7 datasets

33,906 rows

Economy and prices

10 datasets

176,249 rows

Markets

6 datasets

238 rows

Organizations

4 datasets

265 rows

Policy and mergers

12 datasets

12,222 rows

Geographies

4 datasets

3,293 rows

Industries

7 datasets

9,205 rows

Research and sources

12 datasets

431 rows

Markets / medium

HHI change decomposition

Participant-level share-squared contributions for adjacent, definition-stable market releases, with residual-firm assumptions, possible HHI-change bounds, endpoint classifications, source custody, and non-causal guardrails.

Full public endpointJSON and CSV use the same current row contract

Rows: 105
Fields: 29
Formats: JSON / CSV
License: CC BY 4.0

Declared schema

29 fields

comparisonIdmarketSlugmarketNamefromYeartoYearframeworkresidualFirmAssumptionparticipantSlugparticipantLabelparticipantStatusisResidualfromSharePercenttoSharePercentshareChangePointsfromHhiContributiontoHhiContributionhhiContributionChangedeltaDirectionfromScenarioHhitoScenarioHhiscenarioHhiChangepossibleHhiChangeFloorpossibleHhiChangeCeilingobservedHhiChangefromClassificationtoClassificationfromSourceIdtoSourceIdguardrail

Sample row

Trace lineage

{
  "comparisonId": "us-search-engine-usage-2023-2024-4",
  "deltaDirection": "decreased",
  "framework": "guidelines_2023",
  "fromClassification": "highly_concentrated",
  "fromHhiContribution": 7899.6544,
  "fromScenarioHhi": 7950,
  "fromSharePercent": 88.88,
  "fromSourceId": "statcounter-search-us-2026",
  "fromYear": 2023,
  "hhiContributionChange": -403.558,
  "isResidual": false,
  "marketName": "U.S. search engine usage",
  "marketSlug": "us-search-engine-usage",
  "observedHhiChange": -375,
  "participantLabel": "Google Search",
  "participantSlug": "google-search",
  "participantStatus": "continuing",
  "possibleHhiChangeCeiling": -375,
  "possibleHhiChangeFloor": -375,
  "residualFirmAssumption": 4,
  "scenarioHhiChange": -375,
  "shareChangePoints": -2.3,
  "toClassification": "highly_concentrated",
  "toHhiContribution": 7496.0964,
  "toScenarioHhi": 7575,
  "toSharePercent": 86.58,
  "toSourceId": "statcounter-search-us-2026",
  "toYear": 2024,
  "guardrail": "HHI contribution changes are descriptive share-squared arithmetic, not causal estimates. A participant's contribution can rise or fall because its observed share changed; the decomposition does not establish conduct, competitive effects, liability, or consumer harm. Aggregate residual categories remain sensitivity assumptions rather than observed firm distributions."
}

This catalog describes the observatory's current public endpoint inventory. Row counts are current encoded rows, not historical additions; fields describe the published response contract, not a guarantee that every value is non-null. Source-review dates and measurement periods remain documented in the release and availability desks.

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