In May 2006, the "Zumtobel Group" went public on the Vienna Stock Exchange. In September 2006, the Zumtobel share was admitted to the ATX. KKR sold its remaining share of 5.5 percent after the initial public offering to an institutional investor in an off-exchange transaction in December 2006. This investor was apparently "Delta Lloyd Asset Management NV". In any case, Zumtobel announced in a mandatory disclosure regarding the shareholder structure on 11 May 2011 that "Aviva plc" was no longer a shareholder of Zumtobel after its majority investment in “Delta Lloyd” had been terminated. At the time, Delta Lloyd held 6.778 percent of the 43.5 million shares; a few days later, “Fidelity” held 9.99 percent.