Van Eyk's co-head of research Suzanne Tavill will leave the business to take a job with AMP in portfolio management.
Co-head of research Jerome Lander will assume responsibility for Tavill's role.
Tavill joined van Eyk in April 2003, after moving to Australia from London, where she was an executive director with Goldman Sachs Investment Management.
In January 2007 she became co-head of research and was responsible for the review of managed funds.