
SRI360 · 2025-06-25 · 1h 55m
Impact investing only works when economics and impact reinforce each other, a holy grail Mark Hays has been chasing through years of sustainable investing work. Mark is Director of Sustainable and Impact Investing at Glenmede, where he works with families and institutions to align portfolios with measurable impact while meeting financial goals. His career spans Cambridge Associates, OMERS, Flat World Partners, and J.P. Morgan Asset Management, across both boutique and global platforms. In this episode, Mark explains his own shift from exclusionary screens to disciplined portfolio construction, and why “economics before impact” became his guiding rule. We talk about: The off-grid solar deal that defined impact investing for him Why ESG data failed when it wasn’t tied to a clear investment thesis How large firms evaluate sustainable investing through an alpha lens Using pilot programs to build trust and test impact strategies When active ownership beats divestment This conversation is about making impact investable at scale. -
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