There is a growing recognition among the private sector that addressing environmental, social and governance (ESG) concerns is good for business. Additionally, a rapidly increasing share of the international pool of invested private capital is seeking opportunities to invest for both financial return and positive social and environmental impact. The number of impact investors has risen from fewer than 50 pre-1997 to well over 200 in 2017. Social impact investments under management currently represent approx. 220 billion US Dollars and there are clear signs that this sector will continue to grow. Bangladesh, Brazil and Switzerland, together with the OECD, UNCTAD, UNCDF and the UNGC, are jointly organizing this session to consider new evidence and policy updates in the field as well as present concrete initiatives that are being undertaken.