Built for people who hold real positions.

Who runs Tradune?

Tradune is an independent project, not a registered company. Its guides, comparisons and earnings write-ups are credited to “The Tradune team”. Tradune does not sell your data or trade on it. It is not a broker: it does not hold money, connect to brokerage accounts or execute trades.

Where does the data come from?

SEC EDGAR

Insider transactions (Form 4), institutional holdings (Form 13F), company financials from XBRL filings, and the official ticker-to-company list. This is public-domain government data, and every insider row on the site links to the filing it came from.

FRED (Federal Reserve Bank of St. Louis)

Interest rates, inflation, unemployment and the Treasury yield curve on the app’s Macro & Rates dashboard.

Market-data vendors

Inside the app, quotes, price history, fundamentals and analyst data come from third-party vendors through their official APIs — for fundamentals that is EODHD, Finnhub and Financial Modeling Prep, routed by priority with fallback. Tradune does not scrape websites, and the app is built so that scraping cannot be switched on.

What you enter

Your trades, deposits and imported positions. Your return, cost basis and tax figures are computed from those records alone; Tradune never links to or logs into a brokerage account.

The public pages on tradune.com do not show licensed vendor data such as live prices: insider pages, company fundamentals and the insider statistics are built from SEC EDGAR filings, and vendor data stays inside the app. Earnings write-ups quote the company’s own results release or SEC filing, and any figure that is not company data, such as an analyst consensus, names the outlet it came from.

How are the figures computed and checked?

The methods are written down, not implied. Your return is a money-weighted return (XIRR) on your own dated cash flows, compared with the same cash flows invested in SPY at its dividend-adjusted price; the full method, including what it excludes, is on the returns methodology page. How insider filings are read, labelled and grouped into clusters is on the insider methodology page.

Several checks run before anything is published. The return calculation on the site’s free calculator and in the app share one set of test cases, and both must produce the same answers. An earnings write-up without a list of sources fails the site build and cannot be published. Comparison pages are checked against each competitor’s own website and carry the date they were checked. When a figure cannot be computed reliably — too little history, a missing price, a filing with no reported value — Tradune shows it as unavailable rather than printing a zero or a guess.

How often is it updated?

The site is rebuilt every night from the SEC filings Tradune has collected by then. Collection is not instant, and for some companies it can trail EDGAR by more than a day, so for the very latest filings EDGAR itself is the record — every insider row links to it. Inside the app, portfolio history is kept as daily snapshots. Guides, comparison pages and earnings write-ups show the date they were last updated or checked.

Found an error? How corrections work

If a number, a filing or a statement about another product looks wrong, email [email protected] with the page address and what you think is wrong — a link to the source helps. We check every report against the primary source (the SEC filing, the company release, or the other product’s own website). If the page is wrong, we fix it and update the date shown on it; if a mistake changed the meaning of a page, the correction says what changed. Where a competitor’s current details are unclear, we describe them in that competitor’s favour.