Ghostfolio is awesome! Sorry for the plug, we are doing something similar with markets.sh it's not open-source (yet) but we're giving you all the data of connected portfolios and bank accounts via api and it's free if you just want the data. Also we are investing a lot of time in asset matching and market data (even options are supported), something all the other tools we've tried fell short of (especially global sto…
When you say "(yet)", are you referring just to the API code or everything? Because I'd love to use this if I could host it myself.