ToolAssay

Parsed institutional holdings from a 13F-HR filing

Parsed institutional holdings from a 13F-HR filing. By investment-manager CIK (e.g. 1067983 = Berkshire Hathaway). Returns each holding's nameOfIssuer, cusip, market value (whole USD per the modern Form 13F convention), shares/principal amount + type, putCall flag for options, and voting authority (sole/shared/none). Sorted by value descending. Pass formType for amendments (13F-HR/A) or non-filings (13F-NT). Backed by SEC.gov; underlying 13F filings are public records.

Not tested: has real-world effectsour last check, 2026-09-24
0 of 0checks answered this week
n/amedian answer time
$0.018listed price per call
n/aprice it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://2s.io/api/finance/thirteen-f

CategoryMarket data
Provider host2s.io
Networkseip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Payment schemesexact
Self-reported calls, 30 days1 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

We never call tools that send, buy, move money or file anything, not even without paying.

Example input (from the provider)

{
  "method": "GET",
  "queryParams": {
    "limit": 3,
    "managerCik": "1067983"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "properties": {
        "method": {
          "const": "GET"
        },
        "queryParams": {
          "properties": {
            "formType": {
              "default": "13F-HR",
              "description": "13F variant. Default 13F-HR; 13F-HR/A for amendments, 13F-NT for non-filings.",
              "type": "string"
            },
            "limit": {
              "default": 25,
              "description": "Max holdings, sorted by value descending.",
              "maximum": 200,
              "minimum": 1,
              "type": "integer"
            },
            "managerCik": {
              "description": "Investment manager CIK (numeric). Berkshire=1067983, Renaissance=1037389, Vanguard=102909.",
              "type": "string"
            }
          },
          "required": [
            "managerCik"
          ]
        },
        "type": {
          "const": "http"
        }
      },
      "required": [
        "type",
        "method",
        "queryParams"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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