David Allen, global chief investment officer of equities at AMP Capital, will leave the firm, a spokeswoman said.
Mr. Allen will pursue opportunities outside of the money manager. He joined the firm in March 2016.
"We thank him for his efforts in building the strong foundations for growth in our equities business," the spokeswoman said.
AMP Capital had A$21.1 billion ($14.8 billion) in equities assets under management as of June 30, 2019.
It is understood that Mr. Allen will not be replaced. He reported to Simon Warner, global head of public markets, who will continue to lead the equities teams as part of the public markets business.
Mr. Allen follows a number of recent departures from AMP Capital including Genevieve Murray, head of Australian equities, who will leave later this year to join the A$162.3 billion ($99.9 billion) Future Fund, Melbourne, as head of listed equities.
Also this week, the money manager's parent firm, AMP, announced the reversal of the July promotion of Boe Pahari to CEO of AMP Capital amid shareholder pushback related to a 2017 sexual harassment complaint. Mr. Pahari will return to his previous role as global head of the infrastructure equity business.