# Japan Activist & 5% Filings Tracker (EDINET) (`kuroshio-data/japan-activist-5pct-filings-tracker`) Actor

Track Japan's large-shareholding reports (the 5% rule, Japan's SC 13D/13G equivalent) from EDINET as clean English structured JSON. Who bought which listed company, how much (ratio before/after), and why — with an activist flag. No Japanese reading required.

- **URL**: https://apify.com/kuroshio-data/japan-activist-5pct-filings-tracker.md
- **Developed by:** [Hayato Yagi](https://apify.com/kuroshio-data) (community)
- **Categories:** Business
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $50.00 / 1,000 results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Japan Activist & 5% Filings Tracker (EDINET)

**Who is buying into Japanese listed companies — and why?**

This actor tracks Japan's *large-shareholding reports* (the Japanese equivalent of a U.S. SC 13D/13G filing — the "5% rule") straight from **EDINET**, the Financial Services Agency's official disclosure system, and returns them as clean **English structured JSON**. No Japanese reading required.

Every time an investor's stake in a Japanese listed company crosses 5%, or changes after that, they must file. Those filings are public, but they are in Japanese, buried in XBRL, and hard to monitor. This actor turns them into a daily, machine-readable feed of **who bought whom, how much, and for what stated purpose** — including an **activist flag** when the filing states intent to make important proposals or influence management.

### What you get (one record per filing)

```json
{
  "docId": "S100YRH9",
  "submittedAt": "2026-07-29 10:18",
  "filingType": "new",
  "holderNameJa": "ＳＯＭＰＯホールディングス株式会社",
  "holderNameEn": "Sompo Holdings, Inc.",
  "issuerNameJa": "株式会社ティアフォー",
  "issuerSecCode": "593A",
  "holdingRatioPct": 17.49,
  "previousRatioPct": null,
  "ratioChangePct": null,
  "crossedThreshold": true,
  "jointHolders": 1,
  "purposeJa": "自動運転分野における中長期的なシナジー創出のため",
  "purposeCategory": "synergy",
  "purposeEn": "Synergy creation",
  "isPotentialActivist": false,
  "source": "EDINET",
  "edinetDocId": "S100YRH9"
}
```

- `holderNameEn` — the holder's official English name, as registered in EDINET (not machine-translated).
- `holdingRatioPct` / `previousRatioPct` / `ratioChangePct` — the stake now, before, and the delta.
- `crossedThreshold` — `true` when a holder newly appears above 5% (a fresh position, not an adjustment).
- `isPotentialActivist` — `true` when the stated purpose signals activism (important proposals, board/management involvement).

### Who it's for

- **Individual investors & analysts** watching Japanese equities without reading Japanese.
- **Newsletter & research writers** who need a daily "who's accumulating" feed.
- **Quant / AI agent builders** who want 5%-rule events as a normalized JSON stream.

### Pairs well with

- [Japan Corporate Events Monitor](https://apify.com/kuroshio-data/japan-corporate-events-monitor) — this actor tells you *who is accumulating shares*; that one tells you *what the company itself just disclosed*: M\&A decisions, board changes, AGM voting results (Japan's 8-K equivalent).
- [SEC Insider Trades Tracker (Form 4)](https://apify.com/kuroshio-data/sec-form4-insider-trades-tracker) — the same idea for the U.S. market: which executives and 10% owners are buying or selling their own company's stock.

### Input

| Field | Default | Notes |
|---|---|---|
| `dateFrom` | today | First disclosure date (JST), `YYYY-MM-DD`. |
| `dateTo` | `dateFrom` | Last disclosure date (JST). |
| `docTypes` | `["350","360"]` | 350 = new large-shareholding report, 360 = amendment. |
| `secCode` | — | Optional issuer stock code filter (e.g. `7203` for Toyota). |
| `maxFilings` | `0` | Cap the run for a cheap test (`0` = no limit). |
| `delayMs` | `500` | Politeness delay between EDINET requests. |
| `edinetApiKey` | — | Your EDINET API v2 key (free from the FSA). Falls back to `EDINET_API_KEY` env var. |

### Getting an EDINET API key

The key is free. Register at the EDINET site (Financial Services Agency) → API section → issue a subscription key. One key, no expiry unless you reissue it. This actor calls only the official documented API (`documents.json` and document download), never scrapes the web UI.

### Notes & limitations

- Purpose text is free-form Japanese; `purposeEn` is a best-effort category label, with the original always kept in `purposeJa`.
- Holding ratios are taken as the aggregate across joint holders (the total position).
- Data source: EDINET (FSA). Numeric disclosure data is not copyrighted; usage follows EDINET's terms (API access permitted; high-volume hammering is not — hence the built-in delay).

### Run locally

```bash
npm install
EDINET_API_KEY=your_key node src/main.js
```

Local input can be placed in `storage/key_value_stores/default/INPUT.json`.

# Actor input Schema

## `dateFrom` (type: `string`):

First disclosure date to scan (JST). Defaults to today if empty.

## `dateTo` (type: `string`):

Last disclosure date to scan (JST). Defaults to dateFrom if empty.

## `docTypes` (type: `array`):

EDINET doc type codes. 350 = new large-shareholding report, 360 = amendment report.

## `secCode` (type: `string`):

If set, only filings for this issuer stock code (e.g. 7203 for Toyota). Leave empty for all.

## `maxFilings` (type: `integer`):

Cap the number of filings processed. Set 0 for no limit. Default 25 keeps a quick sample of recent activity.

## `delayMs` (type: `integer`):

Politeness delay to respect EDINET's high-volume-access rule. Do not set below 300.

## `edinetApiKey` (type: `string`):

Your EDINET API v2 subscription key. Free from the FSA EDINET site. Falls back to the EDINET\_API\_KEY environment variable.

## Actor input object example

```json
{
  "docTypes": [
    "350",
    "360"
  ],
  "maxFilings": 25,
  "delayMs": 500
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("kuroshio-data/japan-activist-5pct-filings-tracker").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("kuroshio-data/japan-activist-5pct-filings-tracker").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call kuroshio-data/japan-activist-5pct-filings-tracker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=kuroshio-data/japan-activist-5pct-filings-tracker",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/acts/Pz9nek5pbYcoshL47/builds/pRB887cZzMH3TkbDX/openapi.json