Geschichte der aktienbetriebe
| Shares | Number of shares | Kind of shares | Decision of the PFSA |
Date of registration | The first share quotation |
| series A | 2 101 750 | ordinary bearer | 25.01.2005 | 11.02.1991 | 29.04.2005 |
| series B | 952 400 | ordinary bearer | 25.01.2005 | 21.09.1999 | 29.04.2005 |
| Series C and PDA | 850 000 | ordinary bearer | 25.01.2005 | 29.03.2005 | 04.03.2005 |
| series D | 560 000 | ordinary bearer | 28.08.2009 | 18.01.2008 | 29.09.2009 |
| series E | 440 000 | ordinary bearer | 28.08.2009 | 15.02.2008 | 29.09.2009 |
| series F | 1 772 704 | ordinary bearer | 11.03.2016 | 02.11.2015 | 11.04.2016 |
| SUM | 6 676 854 |