aventron AG is 62.2% owned by aventron holding AG.  The only other investors with more than a 5% shareholding in aventron are UBS Clean Energy Infrastructure Fund II with 6.7%, Reichmuth Infrastruktur Schweiz with 6.1% and Credit Mutuel Equity (CIC Capital Schweiz) with 5.8%.

aventron AG shares may be traded on the OTC-X of the BEKB, 4.8% of the equity is in free float (shareholders with stakes below 3%).

There are issued 48’987’135 shares.