Milford chief executive Troy Swann is stepping down at the end of the year having steered the fund manager through industry-wide regulatory change.
He announced his decision in a letter to clients saying he was returning home to Australia to be closer to his family.
Milford head of product and operations Mark Ryland has been appointed as acting CEO while Milford undertakes a process to appoint a new chief.
Swann took the reins in October 2016, replacing Anthony Quirk who retired as an executive in July. Swann was previously with NAB Asset management in Sydney.
He joined Milford as the firm came to grips with new licensing requirements of the Financial Markets Conduct Act (FMC) and changes to a suite of other regulations including anti-money laundering and fair trading rules.