ImpactAssets has released its "IA 50" for 2013. The free online resource represents a broad range of fund managers that deliver social and/or environmental benefits along with financial returns.

Now in its third year, the list of 50 managers includes traditional investment firms as well as emerging specialists. It can be filtered based on criteria including asset class, focus area and impact metrics, making it easier for investors and advisors to find impact investment managers.

Fund managers included in the IA 50 2013 manage a combined $10.8 billion in assets within the impact investing market.

“For several years, interest in impact investing outpaced opportunities for mainstream investors to participate,” said Jed Emerson, chief impact strategist of ImpactAssets. "The IA 50 was designed to help convert interest into action by showcasing funds with expert management and solid track records.”

In order to be considered for the IA 50 2013, fund managers needed to have at least $5 million in assets under management, more than 3 years of experience with impact investing and demonstrated commitment to impact.

ImpactAssets is a nonprofit financial services firm that advances social or environmental change through investment. The list of the 2013 IA 50 can be viewed here: