This Study analyzes policies, practices and attitudes with respect to responsible investing among 186 U.S. private and public/community foundations. These respondents comprised 52 private/independent foundations, 49 private/family foundations, eight public foundations and 77 community foundations, together representing a total of $39.7 billion in endowment assets as of December 31, 2014 and encompassing a wide range of endowment sizes and geographic locations across the U.S. Data gathering took place in the winter of 2015-2016 using an online survey instrument. While many surveys on responsible investing have been published in recent years, the authors believe that this Study is the most comprehensive and detailed such effort to date on this topic among private and public foundations, and are grateful to the professionals at participating institutions who contributed their time and knowledge to its creation. [This paper was co-published with the Council on Foundations.]