Actually no …
Those are migros companies, that work with cumulus:
https://cumulus.migros.ch/de/ueber-cumulus/sammel-und-einloesepartner.html

Alnatura
Bike World
Do it + Garden Migros
Ex Libris
Migros Online
melectronics
Micasa
Migrol
migrolino
Migros
Migros Ferien
Migros France
Migros Partner
OBI
SportX
Sammelpartner

Unfortunately, you can't use Migros Cumulus Card in Denner. And Denner doesn't have a card for points.