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Resolve company identifiers — CIK, ticker, FIGI, ISIN, CUSIP, or company name — to a best-match SEC entity record with exchange, sector, industry, SIC code, and match details. The entity graph powers identity joins across every other SEC API surface.

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Why use this

Financial data systems break when entity identity is ambiguous. The SEC API Entity Resolution surface maintains an entity graph of issuers, filers, managers, insiders, funds, and aliases so downstream queries do not need to rebuild identity logic on every call.
  • Six identifier types — CIK, ticker, FIGI, ISIN, CUSIP, and company name
  • Best-match entity resolution — issuers, filers, managers, insiders, funds, and aliases resolved with match details when available
  • Structured metadata — exchange, sector, industry, SIC code, and entity type on every record
  • Alias resolution — historical tickers, name changes, and cross-identifier mappings
  • Batch-friendly — resolve multiple identifiers in a single request
Company names and reused tickers can be ambiguous. For filings-sensitive work, pin requests to CIK or accession number.

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Quick start

# Resolve by ticker
curl -H "x-api-key: $SECAPI_API_KEY" \
  "https://api.secapi.ai/v1/entities/resolve?ticker=AAPL"

# Resolve by CIK
curl -H "x-api-key: $SECAPI_API_KEY" \
  "https://api.secapi.ai/v1/entities/resolve?cik=0000320193"

# Resolve by name
curl -H "x-api-key: $SECAPI_API_KEY" \
  "https://api.secapi.ai/v1/entities/resolve?name=Apple+Inc"

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Example: search entities

curl -H "x-api-key: $SECAPI_API_KEY" \
  "https://api.secapi.ai/v1/entities?query=tesla&limit=5"

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Response shape

{
  "entity": {
    "cik": "0000320193",
    "ticker": "AAPL",
    "name": "Apple Inc.",
    "figi": "BBG000B9XRY4",
    "isin": "US0378331005",
    "cusip": "037833100",
    "exchange": "NASDAQ",
    "sector": "Technology",
    "industry": "Consumer Electronics",
    "sicCode": "3571",
    "sicDescription": "Electronic Computers",
    "entityType": "issuer",
    "aliases": [
      { "type": "formerName", "value": "APPLE COMPUTER INC" }
    ]
  }
}

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Key parameters

ParameterTypeDescription
tickerstringCompany ticker symbol
cikstringSEC Central Index Key
figistringOpenFIGI identifier
isinstringInternational Securities Identification Number
cusipstringCUSIP identifier
namestringCompany name (fuzzy matched)
querystringSearch query for entity listing
limitnumberResults per page (entity search only)

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Rate limits

  • Standard plan: 200 requests/minute
  • Pro plan: 1000 requests/minute
  • Enterprise: Custom limits
Entity resolution is a lightweight lookup operation. Rate limits are higher than data-heavy endpoints.