Most people who start investing put their savings into a handful of stocks, with no idea how much risk they have taken on.
PRISM shows you. Add your portfolio and it splits the risk into its parts, the way a prism splits light, using the kind of analysis hedge funds use. Then it teaches you what to do about it.
How much could you lose on a bad day?
PRISM answers with your own holdings: what a normal bad day costs, how far the worst fall went, and which stocks are behind it.
- Value at Risk and expected shortfall
- Stress tests against past sell-offs
- A factor model and stock-specific risk
Daily profit and loss over the past year
Each bar counts trading days. Red bars are days worse than the 95% VaR. Sample portfolio at today's position sizes.Try the change before you make it.
Build a practice portfolio with real prices and no real money. See how the mix would have done, change it, and look again.
- Practice trading in stocks, shorts and options
- Every result set against the S&P 500
- An AI Assistant for questions about your portfolio
Sample portfolio over the past year
PRISM's made-up sample portfolio against the S&P 500. Prices as of .
Look up any US company.
One page per stock, plus the market signals that usually sit on a dozen different sites.
- Earnings releases from SEC filings, scored for tone
- Prediction markets, global macro and sentiment
- Insider trades and the economic calendar
Then learn how to fix it.
Short lessons, played card by card. Each teaches one idea on the same charts you just used.
- Earn XP and climb from Intern to Portfolio Manager
- Quizzes, review cards and company investigations
- A glossary of 121 terms in plain language
- Returns and compoundingEarn XP
- Risk and volatilityLocked
- DrawdownsLocked
- Benchmarks and the S&P 500Locked
- DiversificationLocked
Know your risk before you take it.
The core tools and lessons are free. PRISM is for learning and practice, and nothing in it is investment advice.