Sorting the sustainable from the spin: who's the 'real deal' on impact investing?

Impact fund investor Snowball wants nothing less than to change the behaviour of investors – and what might have seemed like a naïve hope just a few years ago now looks like the latest trend. But how do you cut through the spin now that everyone seems to have an impact product to sell? And as impact investment becomes ever more popular, is fund manager impact keeping up? Abigail Rotheroe explores the issues.