Sustainable investments account for more than a third of global assets Sustainable investments total $35.3 trillion, or more than a third of all assets in five of the world’s biggest markets, a report from the Global Sustainable Investment Alliance on Monday showed. Investors are increasingly driven by environmental, social and governance-related (ESG) factors that traditionally have not been captured in a company’s balance sheet, but that can influence future returns. The GSIA, whose member bodies track growth in their region, said professionally managed assets, using a broad gauge of what it means to invest sustainably, account for 36% of total assets under management.