Stephen Moore, lead manager of two sizeable US equities funds at Artemis, is to leave the asset manager for “personal reasons” and hand over to his co-manager.

Moore will continue in his role for a handover period until September 30, Artemis said in a July 30 statement, when William Warren will take over as lead on the funds. Together they are worth £2.7bn — or around a 10th of Artemis’s £28bn in assets.