# 13F Institutional Holdings – Manager CIK Search

> 13F Institutional Holdings – Manager CIK Search is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Resolves an institutional fund manager name to its SEC 13F filer CIK identifier, searching across ~8,800 managers in the directory

## Facts

- Endpoint: POST https://x402.professorsausages.com/13f-holdings/managers/search
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/13f-institutional-holdings-manager-cik-search-09672180
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zde22q1zUdtuqKq1z8ZIZ

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 13f-institutional-holdings-manager-cik-search-09672180 -d '<json body>'
```

Example prompt: Can you find the SEC 13F filer CIK for Pershing Square Capital Management so I can pull their latest institutional holdings?

## When to prefer this

Use this endpoint when you need to resolve a human-readable institutional fund or hedge fund manager name (e.g. 'Berkshire', 'Scion', 'Bridgewater') to a machine-readable SEC CIK before querying 13F holdings data. It is the necessary first step in any 13F holdings research pipeline where you only know the manager name, not the CIK.

## Known failure modes

- Manager name not found in the ~8,800 manager directory — returns empty results or 404
- Ambiguous manager name matching multiple filers — may return multiple candidates
- Misspelled or partial name fails to match — requires closer spelling to directory entry
- Payment failure (x402 protocol) — request rejected before processing
- Rate limiting or service unavailability — HTTP 429 or 5xx error

## Output

Returns the matched institutional manager's SEC CIK identifier and associated filer name/record, enabling downstream lookup of their 13F quarterly holdings filings on EDGAR.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/13f-institutional-holdings-manager-cik-search-09672180/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.professorsausages.com](https://www.zero.xyz/host/x402.professorsausages.com/llms.txt)