Your broker tells you what you have. Not what you are exposed to.
Sphinx Risk exists to close that gap: it rebuilds a portfolio day by day from its trades and measures the risk it actually carries — how far it can fall, which holdings move together, and which one is really driving it.
Why it exists
A broker app shows positions, gains and a pie chart of weights. None of that says how the portfolio behaves when markets fall. A holding that is 20% of the money can be 40% of the risk; five funds can be one bet in five wrappers. Those are the numbers that decide how a bad year feels, and they are the ones nobody shows. Sphinx Risk computes them, explains each one on a worked example, and says where each one misleads.
What it does, and what it refuses to do
It does
- Measure a portfolio: return, drawdown, volatility, correlation, concentration and each holding's share of the risk.
- Show public companies from their own SEC filings, with quality screens and a DCF whose every assumption is visible.
- Import trades from a broker's CSV export, and explain every figure in plain words.
It does not
- Give investment advice or recommendations. No "buy", no "sell", no price targets.
- Place orders, hold money or connect to an account with the power to trade.
- Deal in crypto, or take commissions from anyone for what it shows.
How the numbers are made
A deterministic engine computes every figure. The same inputs always give the same result, and 653 automated tests check the calculations — including tests that redo the arithmetic of every worked example on the Learn pages.
Human always on the loop. The architecture, the financial formulas and the judgement of what counts as correct were directed and reviewed step by step. The optional AI copilot only explains figures the engine produced, and under every answer it shows exactly which calculations it called.
Where the data comes from
- Company accounts and filings — the SEC's EDGAR system, the documents companies file themselves. Public domain.
- The risk-free rate — the 10-year US Treasury yield, published by the Federal Reserve Bank of St. Louis (FRED).
- Share prices — free end-of-day data via Yahoo Finance for personal use; automatic daily prices on paid plans come from your own data key.
- Your trades — what you type or import. They are yours: exportable and deletable at any time (see Privacy).
Who is behind it
Sphinx Risk is built and run independently, from Switzerland — no bank, no broker and no fund behind it, and no revenue other than the plans on the pricing page. That independence is the point: it can show you what a broker has no reason to.
Contact
For anything — a figure that looks wrong, your data, a refund — write to support@sphinxrisk.com. Answers within two working days. News and new features: X, Instagram.