This ImpactAlpha article co-authored by Christina Leijonhufvud, Sarah Gelfand, Kelly McCarthy, and Dean Hand emphasizes the need for more reliable and verifiable performance reporting on sustainability and impact results. The article mentions the GIIN’s COMPASS: The Methodology for Comparing and Assessing Impact report reading, “This work builds on the GIIN’s IRIS+ system, and several years of gathering real-world impact performance data at the investment level, to provide guidance on calculations and approaches for interpreting change in impact over time as well as for assessing impact performance relative to the size of specific social and environmental solutions gaps. The COMPASS methodology reflects aspects of several industry-wide efforts designed to bring more rigor and meaning to analysis and comparisons of impact performance data.”