All workInvesting
Ledger
Investment portfolio tracker
A portfolio tracker, shown here with sample data for a long-term investor: ETFs, a few stocks and some crypto, with two years of history, eleven holdings, monthly deposits and dividends.
- Type
- Product
- Year
- 2026
- Role
- Product design and frontend
- Stack
- Next.js, React, TypeScript, SVG
- Links
- Try the demo
Challenge
Many investing apps count deposits as gains, so you can’t tell how much your portfolio actually grew.
Approach
Returns are calculated net of deposits, and the charts are custom SVG, with no chart library. Prices come from a seeded market simulation, so the server and the browser render the same numbers.
What we built
- Portfolio value from one week to two years
- Allocation by asset class, sector and region
- Holdings table with search and detail view
- Light and dark themes, EUR and USD, mobile layout
