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Index Constituents

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What this utility is for

  • expose index rosters only when SEC API has a documented public-source right to share them
  • map constituent symbols into SEC API’s canonical entity graph when local coverage exists
  • keep the broader index universe visible in the source inventory without pretending unsupported families are production-ready

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Current support

  • NDX is fully supported — SEC API parses the public Nasdaq-100 companies page published by Nasdaq
  • SEC API returns company name, ticker, rank order, rights metadata, provenance, and any canonical entity match already available in the local graph
  • SEC API does not return weights for NDX because the public source page does not publish them

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Inventory-only indices

  • UKX and SX5E are tracked in the source inventory, but rights and extraction status are still under review
  • inventory-only indices are listed for transparency but are not returned by the public constituents endpoint

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Public export

SEC API exposes constituent rosters only when the source and redistribution rights are documented. Entity mapping quality does not by itself make a roster public.

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Rights model

  • public_source_documented means the source page and public-sharing status are documented
  • public_source_review_required means SEC API tracks the official source but has not cleared the roster for public constituent export
  • licensed_index_not_supported means SEC API will not expose the constituent roster until explicit licensing is in place

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Sync status

  • NDX is the only public constituent roster today, and its export is generated from SEC API’s source definition
  • syncCadence values describe source-review status and intended refresh cadence; they do not imply that every inventory-only benchmark family is already auto-synced into a public roster

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Example

curl -H "x-api-key: $SECAPI_API_KEY" \
  "https://api.secapi.ai/v1/market/indices/constituents?index=NDX&limit=10"