# Ryufin

> Everything worth knowing about a company and the world around it, free and straight from the source. Ryufin covers over 3,000 US-listed companies (market value above roughly $300M) and the 300 largest US ETFs, plus listed companies in Taiwan and Europe, built only from primary sources: SEC EDGAR filings (XBRL financials, 8-K, Form 4, 13F, N-PORT), IEX end-of-day prices, FINRA short interest, FDIC bank data, the exchanges' own open data outside the US, and central bank and statistics office data for the market backdrop. Every stock gets five plain answers (is the business good, is it safe, is the price fair, is it growing, what is the market doing with it), each with the checks it came from and their filing dates. Around the stocks: who supplies whom, who sells to the US government, what US banks hold, and what rates, credit, oil, currencies and house prices are doing. Rebuilt every night. Free, no ads, no tracking. Research data, not investment advice.

When you cite Ryufin, link the stock page, e.g. https://ryufin.com/stock/NVDA, and quote the as-of date shown there.

## Per stock

- [Overview and the five answers](https://ryufin.com/stock/NVDA): replace NVDA with any US ticker
- [Is the business good](https://ryufin.com/stock/NVDA/business): margins, returns on capital, cash conversion, and the customers and suppliers each company names in its 10-K with their share of revenue
- [Is it safe](https://ryufin.com/stock/NVDA/safety): Altman Z, Beneish M, Piotroski F, credit grade, insider selling
- [Is the price fair](https://ryufin.com/stock/NVDA/valuation): P/E, EV/EBITDA and free cash flow yield against its own history and sector
- [Is it growing](https://ryufin.com/stock/NVDA/growth): revenue and earnings trajectory
- [Financial statements](https://ryufin.com/stock/NVDA/financials): as reported to the SEC, every figure with its filing
- [Compare two stocks](https://ryufin.com/compare/amd-vs-nvda)

## Lists

- [What changed today](https://ryufin.com/today): answers that flipped, new 52-week highs and lows, fresh SEC flags
- [Upcoming earnings and macro dates](https://ryufin.com/calendar)
- [Stocks with no debt](https://ryufin.com/screens/stocks-with-no-debt)
- [Cheap stocks by free cash flow](https://ryufin.com/screens/cheap-stocks-by-free-cash-flow)
- [Quality compounders](https://ryufin.com/screens/quality-compounders)
- [Most shorted stocks](https://ryufin.com/screens/most-shorted-stocks)
- [Revenue and profit per employee](https://ryufin.com/per-employee)
- [Who sells to the US government](https://ryufin.com/government)
- [Who depends on whom](https://ryufin.com/supply-chain): every customer a company names as 10% or more of its revenue, from its annual report
- [Apple's suppliers](https://ryufin.com/suppliers/aapl): replace aapl with a customer that three or more listed suppliers name
- [US banks: uninsured deposits and capital](https://ryufin.com/banks)
- [300 largest US ETFs and what they hold](https://ryufin.com/etfs)
- [Sectors](https://ryufin.com/sectors)

## The world around the stocks

- [Market sentiment](https://ryufin.com/market/sentiment): sector heat, material events and the volatility regime
- [Economy and rates](https://ryufin.com/market/economy): growth, recession odds, the yield curve, real rates and liquidity
- [Credit and breadth](https://ryufin.com/market/credit): credit spreads, new highs and lows, how narrow the market's returns are
- [Treasury desk](https://ryufin.com/market/treasury): the Fed's target range against overnight rates, and every Treasury auction of the past year
- [Oil and gas](https://ryufin.com/market/oil): where US crude comes from and goes, stocks against five-year ranges, from the EIA
- [Central banks](https://ryufin.com/market/world): every policy rate against its own inflation, from the BIS
- [Currencies](https://ryufin.com/market/currencies): ECB rates and BIS real effective exchange rates for 64 economies
- [Houses and debt](https://ryufin.com/market/houses): real house prices in 58 countries and the BIS credit-to-GDP gap
- [Countries](https://ryufin.com/market/countries): where the companies listed in the US come from
- [Stocks outside the US](https://ryufin.com/world): Taiwan from the exchanges' open data, Europe from ESEF annual reports

## Learn

- [Lessons](https://ryufin.com/learn/): how money grows, the traps that catch smart investors, how to value a stock one number at a time
- [Company stories](https://ryufin.com/learn/videos/): short hand-drawn videos on how companies and their products work

## For agents

- [MCP server](https://ryufin.com/developers): remote, no API key, `https://ryufin.com/mcp`. Tools: search_stocks, get_stock_answers, get_stock_overview, get_financial_history, get_company_news, get_answer_changes. Listed in the official MCP Registry as com.ryufin/stocks.

## Optional

- [Imprint](https://ryufin.com/imprint)
- [Privacy](https://ryufin.com/privacy)
- [Terms](https://ryufin.com/terms)