John Fildes throws down gauntlet to ASX

John Fildes, who has been named alternative trading venue Chi-X Australia's next chief executive, has laid down a strong challenge to Sydney-based stock exchange ASX. He will start on May 1 as a successor to Peter Fowler, who is set to retire but will continue as CEO in the interim. Fildes joins from market-making firm Getco, where he was Singapore-based director of strategic development for two-and-a-half years. Between August 2009 and June 2010, he was the Asia chief operating…