aventron AG is 61.9% owned by aventron holding AG.  The only other investors with more than a 3% shareholding in aventron are Stadtwerk Winterthur with 7.7%, the UBS Clean Energy Infrastructure Fund II with 6.3%, Reichmuth Infrastruktur Schweiz with 6.1% and Gebäudeversicherung Bern with 3.4%

aventron AG shares are listed on the Bern stock-exchange with 14.4% of the equity in free float (shareholders with stakes below 3%).

There are issued 43’728’575 shares (per 31st of July 2018).