You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
fiinquant was reported malicious
OSV:MAL-2025-41672 - Malicious code in fiinquant (PyPI)

fiinquant
0.7.42

This version was deleted from PyPI around 2025-04-01. Installing fails with:
$ pip3 install fiinquant==0.7.42 ERROR: Could not find a version that satisfies the requirement fiinquant==0.7.42
View other deleted versions of fiinquant

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-03-31/ \ fiinquant==0.7.42
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
FiinQuant-0.7.42-py3-none-any.whl (496.1KB)
fiinquant-0.7.42.tar.gz (233.3KB)