---
title: "Get institution activity over time"
method: GET
path: "/intelligence/institution/{cik}/activity"
tags: ["Intelligence"]
---

# Get institution activity over time

`GET /intelligence/institution/{cik}/activity`

## Request

- Base URL: `https://api.signal8.ai/api/v1/public`
- URL: `https://api.signal8.ai/api/v1/public/intelligence/institution/{cik}/activity`
- Auth: API key in header `X-Api-Key`

Summarize an institution's 13F portfolio across recent quarters by CIK.
Each period reports holdings count, total value, total shares, and the
quarter-over-quarter change in holdings count and total value.

**Credit cost: 10**

## Path parameters

- `cik` string, required

## Query parameters

- `periods` integer

## Response `200`

Per-quarter portfolio activity

- object

## Other responses

- `400`: Invalid request parameters
- `401`: Missing or invalid API key
- `402`: Not enough credits for this request
- `404`: Resource not found
- `429`: Rate limit exceeded

---

[API](https://skmtc.dev/signal8/apis/signal8-public-api.md) · [All operations](https://skmtc.dev/signal8/apis/signal8-public-api/llms.txt) · [OpenAPI document](https://skmtc.dev/signal8/apis/signal8-public-api/revisions/5a18ae8d6d58?raw)