Frequently asked questions

Livermore is a free website that shows who is buying, selling and holding US stocks, with data taken directly from public filings: insider trades (SEC Form 4), institutional holdings (13F), holders of more than 5% (Schedule 13D and 13G), insiders' planned sales (Form 144) and stock trades reported by members of Congress. It also has company filings, financial statements and short-selling data, in English and Traditional Chinese.

Livermore is free, and there is nothing to sign up for: no account, no paywall and no API key, on the website or for AI assistants. Every page is public.

Each of those sites is best known for one kind of data: OpenInsider for insider trades, Dataroma for superinvestor portfolios, WhaleWisdom and 13F.info for 13F holdings, Capitol Trades for trades by members of Congress. Livermore brings these together on one page per stock, along with 13D, 13G and Form 144 filings, financial statements and short interest. It is free, needs no account, links every number to its filing, comes in English and Traditional Chinese, and AI assistants can query it directly through its MCP server.

No. Livermore shows what was filed and makes no recommendations: nothing on the site is a recommendation to buy or sell any security. The data is processed automatically and may contain errors, so check the original filing, which every number links to, before relying on it. Livermore is not affiliated with the SEC or any other government agency.

Email [email protected]. If a number looks wrong, include the address of the page; every row links to its original filing, which is the record that counts.

From free, first-hand public sources: SEC EDGAR (Form 4, 13F, Schedule 13D and 13G, Form 144, 10-K, 10-Q and 8-K filings, XBRL financial statements and fails-to-deliver), FINRA (short interest, daily short volume and dark pool volume), and the U.S. House Clerk and the Senate's eFD system for politicians' trade reports. Livermore does not copy data from other websites. Every source is listed in About the data.

It is updated daily, not in real time. New SEC filings are loaded every night after 11:30 pm US Eastern, usually the same day they are filed; financial statements and the list of company filings follow at about 1:00 am, politicians' reports are collected at about 10:15 am, and FINRA short data every weekday evening. The last update of each dataset is shown in About the data.

Insider trades (Form 4) since July 2021; 13F holdings for all institutions since the first quarter of 2021, and longer for some superinvestors; Schedule 13D and 13G since 2021; Form 144 since 2023; politicians' trades since January 2020; company filings since 2009; financial statements since 2009 (2011 for smaller companies); FINRA short interest since 2021; daily short volume and fails-to-deliver for the last two years.

Livermore shows only data from public filings and releases, which it is free to republish; stock prices come from market data providers whose data can't be republished. The only prices shown are those in the filings themselves, such as the price of a Form 4 trade. The price charts on stock pages are embedded from TradingView, and each company's market cap is calculated from the latest daily close without showing it.

Institutions report their holdings as of the last day of each quarter and have 45 days to file, so a 13F can be weeks old by the time it is public. A 13F also covers only long positions in US-listed stocks, ETFs and options: short positions, cash and most bonds are left out, so it is not the whole portfolio.

Members of Congress are only required to report the value of each trade as a range, such as $1,001-$15,000 or $1,000,001-$5,000,000, and they have up to 45 days to report it. Livermore shows the ranges as filed. Where it adds trades up, it counts the midpoint of each range, so those totals are labeled as estimates.

Purchases with the insider's own money have transaction code P on Form 4, and sales have code S. Most other codes are not trades: A is a grant from the company, M an option exercise, F shares withheld for taxes, G a gift. Trades under a Rule 10b5-1 plan were scheduled in advance and are labeled 10b5-1. Every code is explained in the Glossary.

A curated list of 47 well-known investors whose 13F filings Livermore follows, for example Warren Buffett (Berkshire Hathaway), Bill Ackman (Pershing Square) and Li Lu (Himalaya Capital). For each one you can see the holdings, the quarterly buys and sells, and their own Form 4, 13D and 13G filings.

No. Livermore has no float data, so it shows FINRA's short interest in shares, the change since the last report and days to cover instead. Short interest and daily short volume measure different things: market makers' short sales are usually about half of off-exchange volume, so a high short volume ratio is not a bearish signal by itself.

Foreign companies that file with the SEC (Form 20-F or 40-F) are included, with annual financial statements. Livermore also covers stocks and ETFs listed in Taiwan (TWSE and TPEx), with monthly revenue, financial statements, daily prices and institutional trading, on tw.livermore.club (in Traditional Chinese only) and through the MCP server.

Yes. Livermore runs a free, public MCP server at https://livermore.club/mcp that AI assistants can query directly, with no account and no API key. It answers questions such as which CEOs bought their own stock this week, what Warren Buffett sold last quarter or which members of Congress traded NVIDIA, with a link to the source page for every result.

Add a remote MCP server (Streamable HTTP) with the address https://livermore.club/mcp and no authentication. In Claude it is a custom connector (Customize, then Connectors); ChatGPT needs developer mode on a paid plan; in Claude Code, run claude mcp add --transport http livermore https://livermore.club/mcp. Step-by-step instructions for each app are on the MCP page.

The MCP server is the API: read-only tools that return JSON, documented in the MCP tool reference. Each call returns at most 200 rows (page through for more), and each IP address can make 60 requests per minute. There is no separate REST API and no bulk download.

Yes. Livermore's pages and compiled US data are available under the Creative Commons Attribution 4.0 license (CC BY 4.0) (opens in a new tab): you can reuse them, including commercially, as long as you name Livermore as the source and link to the page the data came from. Taiwan data follows Taiwan's Open Government Data License, which also requires naming the sources.

Yes: llms.txt is a plain-text summary of what Livermore covers, its page addresses and its MCP tools, written for language models and AI agents. Livermore's pages are rendered on the server, so their content is in the HTML without running JavaScript.