# AnswerPool 13F Manager Holdings

> AnswerPool 13F Manager Holdings is a paid API for AI agents from answerpool.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Retrieve an institutional investment manager's latest 13F-HR reported holdings — issuer names, CUSIPs, FIGIs, share counts, and USD values — sorted by largest position first.

## Facts

- Endpoint: GET https://answerpool.io/v1/sec/13f/manager
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/answerpool-13f-manager-holdings-c2108487
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_derfRKVB61PmcVzRIhgvc

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 answerpool-13f-manager-holdings-c2108487
```

Example prompt: Pull the latest 13F holdings for the manager with CIK 0001566307 — I want all positions sorted by value, up to 100 holdings, so I can see what they're invested in.

## When to prefer this

Choose this endpoint when you need structured, ranked institutional holdings data directly from SEC 13F-HR filings for a specific manager identified by CIK. It is ideal for portfolio research, institutional ownership analysis, fund transparency checks, or building datasets of large investor positions. Prefer it over general SEC EDGAR search when you want pre-parsed, value-sorted holding rows with CUSIP/FIGI identifiers rather than raw XML filings. It is particularly useful when you already know the manager's CIK and want clean, machine-readable output without parsing EDGAR directly.

## Known failure modes

- Invalid or non-existent CIK returns an error or empty result
- CIK belongs to a filer that has never submitted a 13F-HR filing
- Requested period date has no matching filing, returns null or empty holdings
- Malformed CIK format (non-numeric or >10 digits) triggers validation error
- Rate limiting or payment failure for the $0.02 USDC per-call fee blocks the request
- FIGI field may be null if the security cannot be mapped to a Financial Instrument Global Identifier

## How this service works

AnswerPool turns SEC EDGAR, the Federal Register, USAspending, NIH, BLS and OpenAlex into structured JSON answers that AI agents and developers fetch in one call. 69 endpoints free, no account; derived analyses $0.02–$0.05 per call by card credits or USDC (x402). MCP server, full provenance.

## Output

A JSON object containing the manager's name, CIK, reporting period, accession number, total portfolio value in USD, and a ranked array of holdings. Each holding includes the issuer name, CUSIP, FIGI (if available), value in USD, share count, share type (e.g. SH), put/call indicator, security class title, and the accession number. Results are ordered largest-value-first, with a configurable limit up to 500 positions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "title": "ManagerIn",
     "required": [
      "cik"
     ],
     "properties": {
      "cik": {
       "type": "string",
       "title": "Cik",
       "pattern": "^\\d{1,10}$",
       "maxLength": 10,
       "description": "CIK of the 13F filer (institutional manager), 1-10 digits, zero padding optional (e.g. 1067983 for Berkshire Hathaway). A CIK with no 13F-HR in the held periods is an error; find one with /v1/sec/13f/managers."
      },
      "limit": {
       "type": "integer",
       "title": "Limit",
       "default": 50,
       "maximum": 500,
       "minimum": 1,
       "description": "Maximum holdings returned from the selected filing, ordered by reported position value descending. Default 50."
      },
      "period": {
       "anyOf": [
        {
         "type": "string",
         "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
         "maxLength": 10
        },
        {
         "type": "null"
        }
       ],
       "title": "Period",
       "default": null,
       "description": "13F report period, the calendar quarter end as YYYY-MM-DD (e.g. 2026-06-30). Omit for the newest quarter held, falling back to earlier held quarters."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "cik": "0001566307",
  "as_of": "2026-08-31T17:00:00Z",
  "count": 1,
  "period": "2025-12-31",
  "holdings": [
   {
    "figi": null,
    "cusip": "22160N109",
    "issuer": "COSTAR GROUP INC",
    "shares": 7217,
    "put_call": null,
    "accession": "0001566307-26-000071",
    "value_usd": 291134,
    "share_type": "SH",
    "class_title": "COM"
   }
  ],
  "accession": "0001566307-26-000071",
  "manager_name": "Ramiah Investment Group",
  "periods_held": [
   "2025-12-31",
   "2025-09-30"
  ],
  "total_value_usd": 14970455,
  "positions_reported": 35
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/answerpool-13f-manager-holdings-c2108487/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from answerpool.io](https://www.zero.xyz/host/answerpool.io/llms.txt)