Impact Investing At $28BN Scale: Scaling Sustainable Capital Across Private Markets

Sep 16, 2025
1h 46m

Episode Description

In this episode, I sit down with Jonathan Hirschtritt, who helped build and now leads sustainable and impact investing at GCM Grosvenor – an alternatives-only asset manager that’s been around for more than 50 years.

The firm manages over $80 billion across the full spectrum of alternatives, including private equity, infrastructure, real estate, and credit. Within that, Grosvenor oversees roughly $28 billion aligned with sustainable investing, with a more tightly defined impact allocation across private markets.

We talk about Grosvenor’s non-concessionary, returns-first approach and how custom separate accounts give clients the flexibility to define their own impact priorities rather than relying on a one-size-fits-all impact fund.

We also cover:

  • Why intentionality and measurement define impact
  • How customization changes investment outcomes
  • What private markets allow that public markets don’t
  • Why energy transition has become a mega theme inside infrastructure

Tune in to learn how impact investing actually works inside large institutional portfolios and why private markets control investing can be such a powerful place to drive measurable outcomes.

About the SRI 360° Podcast: The SRI 360° Podcast is focused exclusively on sustainable & responsible investing. In each episode, I interview a world-class investor who is an accomplished practitioner from all asset classes.

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Additional Resources:
🔹 Jonathan Hirschtritt LinkedIn

🔹 GCM Grosvenor website

🔹 Strengthening Outcomes: Impact and Financial Value at Exit,” published by ICM, Morriso

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