---
title: "Get activist stakes (SEC Schedule 13D: holders of more than 5% of a class of shares with intent to influence control), one row per reporting person. Query by ticker (who holds activist stakes in this company) or by filer_cik (what stakes does this activist hold); provide exactly one of the two. By default each stake's current state is returned; set history=true for the full amendment chain. This endpoint is the activist-only view of /beneficial-ownership."
method: GET
path: "/financial-datasets/activist-ownership"
tags: ["Financial Datasets"]
---

# Get activist stakes (SEC Schedule 13D: holders of more than 5% of a class of shares with intent to influence control), one row per reporting person. Query by ticker (who holds activist stakes in this company) or by filer_cik (what stakes does this activist hold); provide exactly one of the two. By default each stake's current state is returned; set history=true for the full amendment chain. This endpoint is the activist-only view of /beneficial-ownership.

`GET /financial-datasets/activist-ownership`

## Request

- Base URL: `https://api.orthogonal.com/mpp`
- URL: `https://api.orthogonal.com/mpp/financial-datasets/activist-ownership`
- Auth: none declared
- TypeScript: <https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/docs/financial-datasets/activist-ownership/get.ts> (a function with typed inputs; its response is checked against the schema)

## Query parameters

- `ticker` string
- `filer_cik` string
- `history` boolean
- `filing_date` string
- `filing_date_gte` string
- `filing_date_lte` string
- `filing_date_gt` string
- `filing_date_lt` string
- `limit` integer
- `cursor` string

## Response `200`

Successful response

## Other responses

- `402`: Payment Required (x402 / MPP / np)

## Changes

- **2026-11-08** `857e915717f4`: 10 info
  - added the new optional `query` request parameter `cursor`
  - added the new optional `query` request parameter `filer_cik`
  - added the new optional `query` request parameter `filing_date`
  - added the new optional `query` request parameter `filing_date_gt`
  - …6 more
- **2026-08-21** `bf5b6f84d6e0`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/changes/financial-datasets/activist-ownership/get.md)

---

[API](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace.md) - [All operations](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/llms.txt) - [OpenAPI document](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/revisions/f89fb77710bc?raw)