The amount of money managed by the world's investment management industry is expected to almost double to $145tn by 2025 — but asset and wealth managers that try to beat the market are forecast to lose significant share.

According to a detailed study by PwC, the consultancy, global assets under management are estimated to increase by more than $60tn over the next nine years although the amount held in active funds is expected to fall steeply from 71% to 60% of total assets.