HOLD! MCP — who owns Korean stocks

한국어

Ask your AI who holds a Korean listed company, what the National Pension Service sold this week, or what price a controlling shareholder paid. HOLD! reads Korea's ownership filings (DART) and serves them as a remote MCP server.

https://whohold.com/mcp

No install, no API key. Paste the URL into any MCP client that speaks Streamable HTTP.

Connect

Claude.ai — Settings → Connectors → Add custom connector. Name it HOLD, paste the URL, then turn it on in a new chat.

Claude Code

claude mcp add --transport http hold https://whohold.com/mcp

Cursor — Settings → MCP → Add server:

{ "mcpServers": { "hold": { "url": "https://whohold.com/mcp" } } }

VS Code — .vscode/mcp.json:

{ "servers": { "hold": { "type": "http", "url": "https://whohold.com/mcp" } } }

Related MCP server: autostock-lite

Ask it

• Who owns more than 5% of Kakao, and how did NPS's stake change this year?

• Every stock NPS cut this week

• Korean stocks where BlackRock holds over 5%

• What did Pan Ocean's largest shareholder pay per share?

• Who indirectly owns Samsung Electronics through Samsung C&T and Samsung Life?

More in examples/prompts.md. You can ask in English. Holder names come back as filed, usually in Korean, and your AI can translate them.

Tools

All tools are read-only.

What makes the data usable

• One holder, one ID. People and companies are told apart by the birth date or business registration number in the original filing, not by name. Two people named 김철수 get two IDs.

• Real trade dates. A 5% change only has to be reported within five business days. When the filing lists the trade date, you get it next to the filing date.

• Trades vs. paperwork. Debt-for-equity swaps, capital reductions, pledges and new listings are flagged non_trade, so they don't count as buying or selling.

• Prices from the filings. Average cost comes from the acquisition prices written in each filing, adjusted for splits and mergers.

• Every answer cites its source. Each row carries as_of (filing date) and a link to the original on DART.

Limits

• Covers 5%+ large-holding reports and 1%+ executive/major-shareholder reports from the last two years. Stakes below those lines, and total foreign ownership, aren't disclosed in these filings.

• NPS and many foreign institutions file a short form that legally omits prices, so get_avg_cost can't price them.

• Updated on weekday evenings (KST). Filings appear on DART first.

• Information, not investment advice.

Feedback

Found a wrong number or a holder merged with someone else? Open an issue with the ticker and holder name. Feature ideas are welcome too.

Sources

Filings: Financial Supervisory Service DART OpenAPI. Prices: Naver Finance. Website: whohold.com.

This repository holds documentation only. The server runs at whohold.com.