The Institutional Investors Group on Climate Change (IIGCC) is a powerful body for investor collaboration, gathering more than 350 members, mainly pension funds and asset managers, across 23 countries, with over EUR 51 trillion in assets under management. To assist its members, IIGCC has recently been working on making the guidelines for assessing the climate stewardship of their external managers clearer and more useful. The project was triggered by the realisation that asset owner members find it challenging to assess, understand and monitor their managers’ stewardship on climate.