About OpenCapital
Public data, made public again.
Every U.S. public company is required by law to file the truth about its business with the SEC. OpenCapital turns those filings into clean, structured numbers anyone — or any AI — can read, with every figure one click from the document it came from. Free for everyone, no account required.
The data already belongs to the public — my job is just to make it readable, and to keep it free, forever, for everyone. The website is the public good; everything paid sits beside it, never on top of it.
Why it exists
The numbers were always public. They just weren't usable.
OpenCapital started with a frustration that has become familiar: you ask an AI assistant about a company's revenue or margins, and it hands back a confident, specific number — one that turns out to be hallucinated, appearing in no filing anywhere. And it points you to nothing: no link to the actual SEC filing, no source to check it against.
Finding the real figure yourself wasn't much easier. Public companies file the truth every quarter, in exhaustive detail, and all of it is public by law — but it's buried in hundred-page documents on SEC EDGAR, written in legal prose that almost no one outside a professional analyst has the time to read. The information is technically public and effectively hidden.
OpenCapital was built to close that gap. We parse every 10-K, 10-Q, and 8-K into structured numbers, label them in plain English, chart their history, and keep every value one click from the filing it came from. The same dataset powers a Model Context Protocol (MCP) server, so the AI tools people increasingly research with can pull from the source instead of guessing.
The project is independent and self-funded.
What we believe
A few rules we don't break.
Simple principles that shape every decision — what we build, what we charge for, and what we'll never do.
No ratings, no recommendations
OpenCapital won't tell you what to buy, sell, or hold. It shows you exactly what a company reported and links straight to the filing, so you can read it yourself and decide.
The data is free — forever
Every metric, every quarter, every filing reference is free, with no account and no paywall. We never gate a number, blur a chart, or put a lock icon on something a company already disclosed to the public.
Every number is verifiable
Each figure links back to the exact filing it came from. How the data is collected and how the project makes money are explained in the open — nothing to take on faith.
No dark patterns, ever
No fake urgency, no countdown timers, no “unlock to see,” no copy written to manipulate. The upgrade is honest and easy to ignore. If you ever want to cancel, the button is one click away.
How it stays free
The website is the product, not the bait.
The public site is free for everyone and always will be. It is funded by an optional $20/month plan for people who have made OpenCapital part of their workflow — connecting their AI assistant without limits, tracking a portfolio, setting alerts, exporting data. The line between free and paid is never the data itself; it is the automation built around it.
We don't run ads. We don't sell your data. We don't take payments to feature a stock or nudge a screener. The subscription is the entire business — which is exactly why the free site can stay the way it is.
For the record
What OpenCapital is not.
- Not a broker, investment adviser, or financial planner. Nothing on the site is a recommendation to buy or sell any security.
- Not affiliated with the SEC, with any company covered here, or with any market-data vendor.
- Not a real-time trading terminal. Prices are end-of-day. OpenCapital is for understanding a business and building a thesis, not for chasing the next tick.
See what the filings actually say
Pick a company and read it the way it was meant to be read — structured, charted, one click from the source.
Questions, data corrections, or feedback? support@opencapital.sh @opencapital_sh