Flows into U.S. sustainable open-end and exchange-traded funds are on pace to smash the calendar-year record set last year. Sustainable funds attracted an estimated $8.9 billion in net flows in the first half of 2019, surpassing their $5.5 billion in flows for all of 2018. Flows into sustainable funds have set calendar-year records for each of the past three years and appear headed for a fourth.