How to master portfolio management

From mentoring online startups to sitting on the board of a multinational publicly listed company (plc), a slew of high-profile marketers have swapped brand-side roles for the freedom of portfolio management over the past year.
Notable among them is Roisin Donnelly, who after 31 years at Procter & Gamble resigned as brand director for Northern Europe last July to explore portfolio management. Alongside being an Advertising Standards Authority council member, Donnelly is now a non-