surging interest rates are benefiting german exchange operator deutsche börse by boosting demand for derivatives tied to borrowing costs and making some of its posttrade services more lucrative deutsche börse’s stock has beaten regional and us competitors this year generating a total return including dividends of almost 15 the rise puts it among continental europe’s bestperforming large stocks it compares with declines of more than 13 for nasdaq inc and more than 30 for new york stock exchange owner intercontinental exchange inc