ZEUS: Stefania Di Bartolomeo's quest to answer this one simple ESG question

Asset manager's Boston-based Physis markets on data transparency to show impact, as well as performance.

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Stefania Di Bartolomeo, founder of Physis Investment.

SAN FRANCISCO (Callaway Climate Insights) — Stefania Di Bartolomeo was a 30-year-old asset manager running about $100 million in an impact investing fund for ab…