CompaniesChanticleerChanticleerMacquarie chief executive Shemara Wikramanayake is going out on top. But her successor Greg Ward faces some tricky questions about the Millionaire Factory’s next growth era.Ariarne Titmus, the swimming champion who won four Olympic gold medals and then quit the sport at the age of 25, once got some fantastic advice about retirement – it’s always better if people are asking ‘why now’ rather than ‘when’.Macquarie chief executive Shemara Wikramanayake must have been thinking along similar lines.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Latest In Financial servicesFetching latest articles