This project takes data from compenswiss, which invests money on behalf of AHV / AVS and tries to find out which of the invested money goes towards nuclear weapons.
Data source: https://www.compenswiss.ch/de/vermoegensanlage/anlageklassen, "Vermögenspositionen" towards the bottom of the page.
This doesn't find all such investments, most likely (because of indirect investments and the like). So all figures are minimums.
License: AGPLv3, Copyright GSoA.