# Livermore

> Livermore (https://livermore.club) is a free, bilingual (English and Traditional Chinese) website with US stock ownership data taken directly from SEC filings: insider trading (Form 4) and institutional holdings (13F), including a curated list of 47 superinvestors. Every number links back to the original SEC filing. AI agents can read the pages or query the same data through a public, read-only MCP server at https://livermore.club/mcp.

The data is as filed with the SEC. Livermore shows no stock prices and makes no estimates; nothing on the site is investment advice.

## Data coverage

- Insider trades: SEC Form 4 filings since July 2021 (open-market purchases and sales, grants, option exercises, tax withholding, gifts and the other transaction codes). Multiple lots of one filing are combined per transaction type, as on OpenInsider.
- Institutional holdings: SEC 13F-HR filings since Q1 2021 for all filers (about 9,000 institutions per quarter). 13F is filed up to 45 days after the quarter ends and covers long positions in US-listed securities only.
- Superinvestors: 47 curated investors, for example Warren Buffett (Berkshire Hathaway), Bill Ackman (Pershing Square) and Li Lu (Himalaya Capital): holdings, quarterly buys and sells, and their own Form 4 filings.
- Coming later: Schedule 13D and 13G (5% owners), Form 144 (proposed sales) and US Congress trades.
- Updates: new SEC filings are loaded once a day after 11:30 PM US Eastern; the ticker list is refreshed daily and the CUSIP-to-ticker mapping weekly.

## Main pages

English pages start with /en/; the Traditional Chinese version of every page uses /zh/ instead (for example https://livermore.club/zh/stock/AAPL). Tickers are uppercase with a dot for share classes (BRK.B), CIKs are 10 digits with leading zeros, and quarters are written like 2026-q2.

- [Stock](https://livermore.club/en/stock/AAPL): /en/stock/{TICKER} is the overview; /en/stock/{TICKER}/insiders lists Form 4 trades; /en/stock/{TICKER}/holders lists 13F holders (/holders/{quarter} for a given quarter, /holders/{quarter}/vs/{quarter} to compare two quarters).
- [Institution](https://livermore.club/en/institution/0001067983-berkshire-hathaway): /en/institution/{cik}-{slug} shows the latest 13F holdings; add /{quarter} for a given quarter, /{quarter}/vs/{quarter} to compare, or /holding/{TICKER} for one stock's history.
- [Insider](https://livermore.club/en/insider/0001214156-cook-timothy-d): /en/insider/{cik}-{slug} lists one person's Form 4 trades across companies.
- [Latest insider trades](https://livermore.club/en/insiders): /en/insiders, plus screens at /en/insiders/cluster-buys, /en/insiders/ceo-cfo-buys, /en/insiders/top-buys-week, /en/insiders/top-buys-month, /en/insiders/top-sells-week and /en/insiders/top-sells-month.
- [Superinvestors](https://livermore.club/en/superinvestors): the list and combined holdings; /en/superinvestors/activity for quarterly buys and sells; /en/superinvestors/realtime for their own Form 4 filings.
- [13F institutions](https://livermore.club/en/institutions): the latest 13F filings.
- [Glossary](https://livermore.club/en/glossary) and [About the data](https://livermore.club/en/about): transaction codes, 13F rules, data sources and limitations.

## MCP server for AI agents

- Endpoint: https://livermore.club/mcp (Streamable HTTP, no sign-in, read-only, stateless). It serves MCP protocol revision 2026-07-28 and the earlier revisions 2025-11-25, 2025-06-18, 2025-03-26 and 2024-11-05.
- Claude Code: `claude mcp add --transport http livermore https://livermore.club/mcp`
- Other clients: add a remote (Streamable HTTP) MCP server with the URL https://livermore.club/mcp and no authentication.
- Tools: search, get_stock, get_insider_trades, get_insider_lists, get_stock_13f_holders, get_institution, list_superinvestors, get_superinvestor_activity, get_data_coverage.
- Results are JSON (money in USD, percentages as numbers, ISO dates), and every item includes its livermore.club URL.
- Limits: at most 200 rows per call and 60 requests per minute per IP address.
- [Developer documentation](https://livermore.club/en/developers): tool reference, parameters and client setup.

## Optional

- [Sitemap](https://livermore.club/sitemap.xml)
- [Traditional Chinese home page](https://livermore.club/zh)