These are articles written by professionals for investment professionals. They are contributions from external subject matter experts who do not work for CFA Institute, but may be a CFA charterholder as well as a member of a CFA Society. All are experts in their field and strive to deliver useful insights that help investment professionals make better decisions. Investment professionals slice and dice risk to generate financial return on invested capital. Sustainable investment capital demands evidence that positive impact is produced alongside positive financial return. Sustainable investment capital increasingly demands evidence that positive impact is produced alongside positive financial return. Once adopted by investors, transparent impact metrics will initiate a rotation in portfolios that moves them away from ‘impact negative’ and toward ‘impact positive’ investments.