Ellis served as chair of the board of the Institute of Chartered Financial Analysts and as of 2019, is one of only fifteen people recognized by the
CFA Institute for lifetime contributions to the investment profession. He has also served as a trustee of Phillips Exeter Academy and Eagle Hill School, and as an Overseer of the Stern Schools of Business at
New York University. After stepping down from Greenwich Associates, Ellis served as a director or advisor to numerous organizations. He served as a director of the
Vanguard Group from 2001 to 2009, and also as a trustee of the
Robert Wood Johnson Foundation. He was managing partner of The Partners of ’63, a pro bono partnership of Harvard Business School classmates and associates, which supported entrepreneurship in education. Internationally, Ellis has served as an advisor to the
GIC of Singapore, as well as to the “future funds” of New Zealand and Australia. He currently serves as chair of the Board of Directors of
Whitehead Institute for Biomedical Research as well as chair of the Board of Directors of Essentia Analytics. Additionally, he serves on the advisory boards of
Wealthfront, Rebalance, The Water Company, GeoSynFuels, and IMDx. In addition, he has on the boards of the Long Wharf Theatre and a number of regional Connecticut organizations. == Personal life ==