Greg Aldridge, who previously managed the Global Growth Fund, will focus on his expanding institutional mandates.
Meanwhile Charles Anniss remains deputy manager of the fund while taking over as sole manager of the European Fund from 1 July.
Olsen joined the firm in April from Danske Capital, where he was portfolio manager for the firm’s Global StockPickingFund and Global Select Fund. He also managed the European Select equity strategy. He will become deputy manager of the Pan European Fund and will continue in his role as manager of the European Smaller Companies Fund.