Macquarie Investment Management portfolio manager Neil Carter and analysts Jim Copland and Matthew Griffin will leave the firm at the end of December.
Carter joined Macquarie in 2006 from hedge fund Rutherglen Capital, and was previously an analyst in London covering United Kingdom and European companies.
The three investment specialists were members of Macquarie's fundamental Australian equities team, with Carter managing the Macquarie Australian Small Companies Fund and Australian Microcap Fund.
Carter said he could not comment on his departure. "I still work for Macquarie, so I can't comment until January," he told InvestorDaily.
Research house Standard &Poor's (S&P) placed the two funds on hold, and also put the Macquarie High Conviction Fund on hold following the announcement.
Copland and Griffin were responsible for researching large- and small-cap resources companies, which are also part of the high-conviction fund.
As an interim measure, the small and micro-cap funds will be managed by Macquarie listed equities division head Patrick Hodgens and portfolio manager Mark Harrison, who is responsible for the Macquarie High Conviction Fund.
In addition, the team has six additional analysts.
"We are monitoring developments and will reassess the on hold ratings when we have more clarity over the steps Macquarie will take in response to these team departures," S&P said.