Giin

The Global Impact Investing Network (GIIN) is a nonprofit organization dedicated to expanding the scale and effectiveness of impact investing, which seeks to generate measurable social and environmental impact alongside financial returns. The GIIN builds infrastructure, provides resources, and fosters collaboration among practitioners to advance the field.

Founded in 2009 by a group of impact investing practitioners and philanthropists, the GIIN operates globally with its base in New York City. It maintains an international network of members, partners, and collaborators across asset owners, asset managers, foundations, development finance institutions, and government bodies.

Core activities include the development and maintenance of impact measurement and management tools, research, and market-building programs. The GIIN oversees the IRIS+ system, an updated catalog of standardized impact metrics and guidance for measurement and reporting, and historically supported the Global Impact Investing Rating System (GIIRS) to assess fund and portfolio performance. In addition to measurement tools, the organization publishes research such as the Annual Impact Investor Survey and other market insights, and offers training, events, and practical resources to practitioners.

The GIIN’s activities aim to advance transparency, comparability, and accountability in impact investing, helping investors identify opportunities, assess outcomes, and allocate capital more effectively. It engages with a broad ecosystem of investors, financial institutions, researchers, and policymakers to foster collaboration and broaden access to capital for social and environmental objectives.