Module № 03
The Book.
A working portfolio, stored in your browser. Add positions by ticker or ISIN, edit and delete inline, export as JSON for backup or import from a saved file. LocalStorage-first, zero server state.
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Add Position
Auto from market data
For stocks/ETFs, price and day change can be fetched automatically. For bonds, quantity = face value and price = clean price per 100. For FX, cash × rate to USD.
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Add positions above, or load the demo to see how everything works.