Most impact investors report meeting or exceeding their impact performance metrics, but is this truly the case? He offers recommendations for measuring impact and explains why the field needs to get more comfortable with impact underperformance in order to learn and grow. The Impact Investing Hub says, “Intentionality and measurable impact are the fundamental concepts that differentiate impact investing from traditional forms of investment.”As researchers, we spend a lot of time thinking about how you measure things, so this commitment to measurement in impact investing is really interesting. This annual survey of hundreds of impact investors asks respondents, “How well are your portfolios doing with regard to impact? Impact-focused, quantitative data were cited far more often in cases of impact success than they were in cases of impact underperformance.