Source for investing.jan-grzybek.com — a static page tracking my own investment portfolio. A scheduled GitHub Actions job pulls the trade ledger from a private Google Sheet, marks it against live yfinance quotes, and publishes the rendered page to GitHub Pages.

What it publishes is derived: time-weighted return, XIRR, allocation weights, holding periods, and per-share transaction prices (market-observable on their own). Never share counts, position sizes, cash balances or total portfolio value — the build treats its own job logs as a side channel too. See SECURITY.md.

A personal project, maintained by me for my own use. Public so the page can be served, not to invite forks or contributions, and the code assumes my spreadsheet's schema throughout. Nothing here is investment advice.