aventron AG is 69.7% owned by aventron holding AG.  The only other investors with more than a 3% shareholding in aventron are UBS Clean Energy Infrastructure Fund II with 7.5%, Reichmuth Infrastruktur Schweiz with 6.1% and Gebäudeversicherung Bern with 3.4%

aventron AG shares may be traded on the OTC-X of the BEKB, 14.4% of the equity is in free float (shareholders with stakes below 3%).

There are issued 43’728’575 shares.