GIIN CEO Luther Ragin Jr. with Program Associate Katy Lankester discusses impact investing.

"Impact investing encompasses a tremendous diversity of activity. It is not limited to the emerging markets, although some of the more innovative practices occur there. Nor are returns inevitably below market. Impact investments are made across sectors - from sanitation to eye care; across geographies - from the Netherlands to Nicaragua; across asset classes - from short-term debt to private equity; and with varying return expectations - from return of principal to venture capital returns of 20% or more."