Deutsche Börse has received a boost after Austrian stock exchange Wiener Börse extended an agreement to use its German rival's electronic trading system, which had been due to expire next year.

Wiener Börse's trading platform has been operated by the German group's Xetra platform since late 1999 under an agreement due to lapse in the middle of next year. Deutsche Börse revealed in a statement this morning that Vienna has extended the arrangement by more than four years to the end of 2012.