Chi-X Australia is on the hunt for a new chief executive following the departure of John Fildes last week.
A spokesperson for the exchange confirmed Fildes resigned on April 12, effective immediately. Former chief executive Peter Fowler is taking the reins in the interim, and chief financial officer Joe Meyer is also taking on greater responsibility.
Staff were informed of the leadership change via an internal memo which thanked Fildes for his four years of service, having been appointed to the role in April 2013.
"The board thanks John for his contribution to Chi-X Australia and wishes him well in his future career," the memo read.
"A search is underway to identify a successor. In the meantime, we are fortunate that Peter Fowler, current CXA board director and former CXA chief executive, has agreed to act in the role on an interim basis and will commence in this position today. Joe Meyer, group chief financial officer and chief operating officer (of Chi-X Asia Pacific Holdings), will also be devoting more time to the CXA business in this interim period."
Chi-X Australia, which was acquired in January 2016 by global private equity firm JC Flowers & Co, is the second biggest trading platform in Australia after the ASX.