v3

latestOpenAPI 3.1.02026-07-26490368.4 KB

Fund Letters

Get a fund-letter investor

Returns an investment firm's full fund-letters profile: identity and principals, the strategy/style/focus profile evidenced across its letters, coverage stats, every fund with published letters, and the complete letter feed (newest first).

Investor identifiers are permanent. When two investor records are ever discovered to be the same firm they are merged rather than deleted, so a previously returned investorId keeps resolving.

get/v1/fund-letters/investors/{investorId}

Path parameters

investorIdstring required

Investor identifier (fscl_investor_…).

Example:fscl_investor_4NYT7FZS641

Investor identifier (fscl_investor_…).

Query parameters

apiKeystring

API Key (alternatively send via X-Api-Key header)

Response

The investor detail.

Example response

{
  "investor": {
    "investorId": "fscl_investor_4NYT7FZS641",
    "investorName": "Baron Capital",
    "investorType": "asset_manager",
    "principalNames": [
      "Ron Baron"
    ]
  },
  "profile": {
    "styleTags": [
      "growth"
    ],
    "assetClassFocus": [
      "public_equities"
    ],
    "geographicFocus": [
      "united_states"
    ],
    "sectorFocus": [
      "information_technology"
    ]
  },
  "stats": {
    "letterCount": 128,
    "fundCount": 12,
    "companyCount": 210,
    "thesisCount": 940,
    "firstPeriod": "2020Q1",
    "latestPeriod": "2026Q1"
  },
  "funds": [
    {
      "fundId": "fscl_fund_8QHH7PGT769",
      "fundName": "Baron Discovery Fund",
      "fundType": "mutual_fund",
      "letterCount": 24,
      "firstPeriod": "2020Q1",
      "latestPeriod": "2026Q1"
    }
  ],
  "letters": [
    {
      "letterId": "fscl_document_5TXS2CWP534",
      "title": "Baron Discovery Fund Quarterly Letter March 31, 2026",
      "fundId": "fscl_fund_8QHH7PGT769",
      "fundName": "Baron Discovery Fund",
      "reportPeriod": "2026Q1",
      "reportPeriodYear": 2026,
      "reportPeriodQuarter": 1,
      "letterType": "quarterly_letter",
      "thesisCount": 11
    }
  ]
}