This document summarizes the 2nd International Symposium on Social Investment held in Tokyo, Japan. It discusses Oikocredit's experience in providing development financing and investments to social enterprises and microfinance institutions since 1975. Oikocredit has 859 partners in close to 70 countries, with 589 being microfinance partners. In Southeast Asia, Oikocredit focuses on the Philippines, Cambodia, Vietnam and Laos, having reached over 5.5 million people through its partners in the region. The document outlines Oikocredit's approach to nurturing and supporting social enterprises through loans, equity investments, capacity building, and organizational development.