Leveraging the power of capital to solve pressing societal challenges can take multiple forms. Possible philanthropic "asset classes" run the gamut from grant making and prize competitions to venture philanthropy and even social impact investing on public markets. This interactive, roundtable-style session will explore how philanthropic investors utilize these various approaches to advance the causes they care about. Throughout the discussion, participants will gain insights from leading practitioners, share their own strategies for deciding which investment approach is right, and will discuss the merits of diversifying a philanthropic portfolio to achieve lasting impact.