# Heurist Mesh SEC 13F Institutional Holders

> Heurist Mesh SEC 13F Institutional Holders is a paid API for AI agents from mesh.heurist.xyz, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-16).

Returns the top institutional holders of a given issuer from the latest SEC 13F filing dataset, ranked by reported position value.

## Facts

- Endpoint: POST https://mesh.heurist.xyz/x402/agents/SecEdgarAgent/institutional_holders
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/heurist-mesh-sec-13f-institutional-holders-809dd3f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-d7xg6wYbC4440lQKv6Af

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 heurist-mesh-sec-13f-institutional-holders-809dd3f5 -d '<json body>'
```

Example prompt: Who are the top institutional holders of Nvidia right now? Pull the latest SEC 13F data and rank them by position value.

## When to prefer this

Use this endpoint when you need authoritative, SEC-sourced institutional ownership data ranked by position size for a specific issuer. Prefer this over social or market-data sources when regulatory filing accuracy and official 13F data is required. Best suited for equity research, due diligence, or investment analysis workflows where knowing the largest institutional stakeholders matters.

## Known failure modes

- Unknown or unrecognized issuer name returns empty or no results
- Ticker not found in 13F dataset if company is too small or not widely held
- Stale data if the latest 13F filing period has not yet been processed
- Ambiguous company names may return results for the wrong issuer
- Network or payment authorization failure returns HTTP 402 or 5xx error

## How this service works

Return the top institutional holders of an issuer from the latest SEC 13F dataset, ranked by reported position value. Use this for institutional ownership questions.

## Output

A ranked list of the top institutional holders of the specified issuer, drawn from the most recent SEC 13F dataset. Each entry typically includes the institution name and the reported position value, sorted from largest to smallest position.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/heurist-mesh-sec-13f-institutional-holders-809dd3f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mesh.heurist.xyz](https://www.zero.xyz/host/mesh.heurist.xyz/llms.txt)