SEC API Form 13F API

openapi: 3.0.3
info:
  title: SEC API (sec-api.io) REST Extractor Form 13F API
  description: 'REST surface of SEC API (sec-api.io), a commercial developer platform that turns the U.S. SEC EDGAR system into fast, queryable APIs. Covers 18+ million filings back to 1993 across 400+ form types. This document models the core REST endpoints - Filing Query, Full-Text Search, XBRL-to-JSON, Extractor, Insider Trading (Form 3/4/5), and Form 13F institutional holdings. The real-time Filing Stream API is a WebSocket surface and is modeled separately in asyncapi/sec-api-asyncapi.yml.

    Authentication is a single API token, obtained from your sec-api.io account. Pass it either as an `Authorization: YOUR_API_KEY` header or as a `?token=YOUR_API_KEY` query parameter. Endpoints, request shapes, and parameters were grounded against the live sec-api.io documentation on 2026-07-11.'
  version: '1.0'
  contact:
    name: SEC API
    url: https://sec-api.io
  license:
    name: API documentation - SEC API Terms of Service
    url: https://sec-api.io/terms-of-service
servers:
- url: https://api.sec-api.io
  description: SEC API REST base
security:
- apiKeyHeader: []
- apiKeyQuery: []
tags:
- name: Form 13F
  description: Institutional investment manager holdings and cover pages.
paths:
  /form-13f/holdings:
    post:
      operationId: query13FHoldings
      tags:
      - Form 13F
      summary: Query Form 13F holdings information tables
      description: Search quarterly portfolio holdings of institutional investment managers from Form 13F filings using Lucene syntax. Returns the holdings information table for each matching filing - CUSIP, ticker, number of shares, and dollar value per position.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/QueryRequest'
            example:
              query: accessionNo:"0001067983-23-000012"
              from: '0'
              size: '50'
      responses:
        '200':
          description: Matching 13F filings with holdings arrays.
          content:
            application/json:
              schema:
                type: object
                additionalProperties: true
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
  /form-13f/cover-pages:
    post:
      operationId: query13FCoverPages
      tags:
      - Form 13F
      summary: Query Form 13F cover pages
      description: Search Form 13F cover-page metadata (manager, report period, filing details) using Lucene syntax over any field.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/QueryRequest'
            example:
              query: filedAt:[2024-01-01 TO 2024-03-31]
              from: '0'
              size: '50'
      responses:
        '200':
          description: Matching 13F cover pages.
          content:
            application/json:
              schema:
                type: object
                additionalProperties: true
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  responses:
    RateLimited:
      description: Rate limit exceeded for your plan.
    Unauthorized:
      description: Missing or invalid API token.
  schemas:
    QueryRequest:
      type: object
      required:
      - query
      properties:
        query:
          type: string
          description: Search criteria in Lucene syntax following the field:value format. Maximum 3500 characters.
        from:
          type: string
          description: Zero-based start position for pagination. Default 0, max 10000.
          default: '0'
        size:
          type: string
          description: Number of results per request. Default 50, max 50.
          default: '50'
        sort:
          type: array
          description: Sort configuration. Defaults to filedAt descending.
          items:
            type: object
            additionalProperties: true
  securitySchemes:
    apiKeyHeader:
      type: apiKey
      in: header
      name: Authorization
      description: 'API key passed directly in the Authorization header (no `Bearer` prefix), e.g. `Authorization: YOUR_API_KEY`.'
    apiKeyQuery:
      type: apiKey
      in: query
      name: token
      description: API key passed as the `token` query parameter.