# SEC 13F Holdings Lookup by Institutional Manager

> SEC 13F Holdings Lookup by Institutional Manager is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-13).

Retrieves the latest SEC 13F filing holdings for a named institutional fund manager (e.g. Berkshire, Bridgewater, ARK), including positions, values, weights, shares, and quarter-over-quarter changes.

## Facts

- Endpoint: POST https://api.vextorium.com/fondo-13f-pago?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sec-13f-holdings-lookup-by-institutional-manager-df262da1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qmt0TkVUzhFOjRFNDiRAQ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sec-13f-holdings-lookup-by-institutional-manager-df262da1 -d '<json body>'
```

Example prompt: What are Berkshire Hathaway's latest SEC 13F holdings? Show me the top positions with their values, share counts, portfolio weights, and any changes versus last quarter.

## When to prefer this

Use this endpoint when you need structured, parsed 13F portfolio data for a specific institutional manager without manually scraping SEC EDGAR. Ideal for agents that need to compare holdings quarter-over-quarter, identify position changes, or analyze top holdings for well-known funds like Berkshire, Bridgewater, Renaissance, or ARK. Prefer this over raw EDGAR access when you need clean JSON output with weights, deltas, and summaries already computed.

## Known failure modes

- Manager name not found or ambiguous — returns null or empty result
- CIK not recognized by SEC EDGAR — returns error or no data
- 13F not yet filed for the current quarter — returns previous quarter data or null
- Rate limit or payment failure — HTTP 402 or 429 response
- Malformed body type or missing required fields — HTTP 400 validation error

## How this service works

Holdings an institutional manager reported in its latest SEC 13F (Berkshire, Bridgewater, Renaissance, ARK...): positions with value, shares and weight, total value and changes vs the previous quarter (new, increased, reduced, sold out). Search by manager name or CIK.

## Output

Returns the institutional manager's name, CIK, total portfolio value in USD, filing and report dates, number of positions, and a list of top holdings each with: issuer name, CUSIP, share class, share count, USD value, portfolio weight percentage, previous quarter share count, and change type (new, increased, reduced, sold). Also includes arrays of newly added positions and fully sold-out positions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [],
     "properties": {
      "cik": {
       "type": "string"
      },
      "limite": {
       "type": "integer"
      },
      "gestora": {
       "type": "string"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "cik": {
       "type": [
        "string",
        "null"
       ]
      },
      "nota": {
       "type": [
        "string",
        "null"
       ]
      },
      "fuente": {
       "type": [
        "string",
        "null"
       ]
      },
      "nuevas": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "string"
        ]
       }
      },
      "gestora": {
       "type": [
        "string",
        "null"
       ]
      },
      "posiciones": {
       "type": [
        "number",
        "null"
       ]
      },
      "presentado": {
       "type": [
        "string",
        "null"
       ]
      },
      "principales": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "object"
        ],
        "properties": {
         "clase": {
          "type": [
           "null",
           "string"
          ]
         },
         "cusip": {
          "type": [
           "null",
           "string"
          ]
         },
         "cambio": {
          "type": [
           "null",
           "string"
          ]
         },
         "emisor": {
          "type": [
           "null",
           "string"
          ]
         },
         "opcion": {},
         "acciones": {
          "type": [
           "null",
           "number"
          ]
         },
         "peso_pct": {
          "type": [
           "null",
        
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sec-13f-holdings-lookup-by-institutional-manager-df262da1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)