---
title: "13F holders register"
method: GET
path: "/holders/{ticker}"
---

# 13F holders register

`GET /holders/{ticker}`

## Request

- Base URL: `https://boothcheck.com/api/v1`
- URL: `https://boothcheck.com/api/v1/holders/{ticker}`
- Auth: HTTP bearer

The current institutional holders register for a US ticker from 13F filings: fund families holding the name, aggregate percent of shares out, concentration (top-10, focused holders), positions opened and closed in the latest quarter, and notable managers. Facts as filed — no performance framing. Requires a signed-in Founding Access account API key (Authorization: Bearer bck_...).

## Path parameters

- `ticker` string, required

## Query parameters

- `format` 'json' | 'csv'

## Response `200`

Structured result. Every payload carries an informational-purposes disclaimer; no Boothcheck house fair value, price target, or rating.

## Other responses

- `401`: Missing or invalid API key for a keyed endpoint.
- `404`: Ticker not covered or no data for this surface.
- `429`: Rate limit reached for the key tier.

---

[API](https://skmtc.dev/boothcheck/apis/boothcheck-api.md) · [All operations](https://skmtc.dev/boothcheck/apis/boothcheck-api/llms.txt) · [OpenAPI document](https://skmtc.dev/boothcheck/apis/boothcheck-api/revisions/fa7f52df2e65?raw)