How Do Impact Investors Know If They Are Having an Impact?

Published on March 12, 2026

Investors are generally looking for measurable returns—the kind that can be counted in dollars or a currency of your choice. But how do investors with a double bottom line count the social side of the ledger? We talked with Jake Harris ’19, a principal at the impact investing firm DBL Partners, about the challenges of measuring the social and environmental returns on a financial investment.

Read the full interview by Yale Insights here: https://insights.som.yale.edu/insights/how-do-impact-investors-know-if-they-are-having-an-impact