The operator of Switzerland's national stock exchange is eyeing "strategic investments" with the proceeds from its sale of a stake in derivatives market Eurex, in a bid to execute on its well-publicised strategy of "internationalisation".

Urs Rüegsegger, the chief executive of Six Group, said today after the publication of its first-half results: "The sale of Eurex [has] further strengthened our financial basis and enables us to push the group's growth forward with strategic investments."