Bill Achtmeyer

Bill launched Acropolis Advisors in 2021 along with HBS strategy icon, Michael Porter. Acropolis works with a limited number of CEOs on their strategic issues.

Prior to Acropolis, Bill founded The Parthenon Group in 1991. He served as Chairman and Managing Partner until the firm was merged with EY in 2014. At the time, the firm had 28 partners and 350 professionals in six locations around the world. He continued to lead and grow EY-Parthenon to a 500 partner and 5000 professional members in 2020 before he retired.

Prior to the merger, he was a board director of Briggs & Stratton and Citizens Energy. He chaired the Massachusetts High Technology Council from 2015-17 and remains on the Executive Committee. Bill is a recognized authority in corporate and business unit strategy and in mergers and acquisitions. He has worked closely with the CEOs of Thomson Reuters, Ford Motor, Dun and Bradstreet, Corning, Houghton Mifflin, Hachette, Invensys, Saatchi & Saatchi, AC Nielsen, and Huber. Previously, Bill was a Director at Bain & Company, which he joined in 1977.

Philanthropically, Bill has been engaged in numerous organizations. He has served as Chairman of the following organizations: Boston Symphony Orchestra(BSO), Massachusetts Society for the Protection of Cruelty to Children(MSPCC), Tenacity, Lawrence Academy, and Nashoba Brooks School. He has been Vice Chair of his alma mater, Belmont Hill School, for over two decades. In 2025, Bill received the Distinguished Alumni Award. In June 2012, Bill stepped down as the Chairman of the Board at the Tuck School of Business at Dartmouth after 11 years at the helm. At that time, he was awarded the Overseers’ Medal in recognition of his dedicated service to Tuck, where he hooded more than 2,600 students at investiture ceremonies. Bill serves on the UNICEF New England Board and the Mass General Brigham Hospital for Children. He received the UNICEF Helenka Pantaleoni Humanitarian Award in 2015 for his leadership on children’s issues.