Building an impact practice

Whether you're just beginning to develop your impact portfolio or you've been investing for impact for years, the GIIN offers information, tools, and networks that will accelerate your progress.

GIIN Membership

Tap into the leading network of like-minded investors and organizations interested in deepening their engagement with the impact investing market.

The GIIN's Membership consists of a network of like-minded investors and other leaders in the impact investment space who connect to share experience and learnings, gain access to special members-only in-person and virtual events, and gain priority access to the latest industry information, tools, and resources.

GIIN Initiative for Institutional Impact Investment

The GIIN Initiative for Institutional Impact Investment supports institutional asset owners seeking to enter, or deepen their engagement with, the impact investing market, by providing educational resources, performance research, and a vibrant community of practice.


IRIS+ is the GIIN's catalog of generally-accepted performance metrics.

IRIS+ is the generally-accepted system for measuring, managing and optimizing impact that the majority of impact investors use to measure social, environmental, and financial success. Impact Measurement and Management (IMM) is at the heart of impact investing, which is why the GIIN provides tools, guidance, and resources to help investors identify metrics and integrate impact considerations into investment management. More IMM resources


The Research Center houses the latest information about market activities and trends, performance, practice, and more.

The GIIN’s searchable Research Center contains key industry publications and GIIN-authored research to provide you with information and data to better understand the depth and diversity of the impact investing market.

Training Program

The GIIN offers specialized impact investment training to investors.

The GIIN training program offers practical coursework to help investors build applied skills to successfully attract, deploy, and manage capital. The GIIN training program specially designs courses for investors looking to develop and deepen their practice, especially in the area of impact measurement and management.

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