Private company

EY-Parthenon

Logo: Ernst & Young, Public domain, via Wikimedia Commons3

Multinational strategy consultancy

EY-Parthenon (often shortened as EY-P or EYP) is Ernst & Young's global strategy consulting arm. The firm was established as The Parthenon Group LLC in 1991 by former Bain & Company directors William "Bill" Achtmeyer and John C. Rutherford.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

  • Industrymanagement consulting industry1

EY-Parthenon (often shortened as EY-P or EYP) is Ernst & Young's global strategy consulting arm. The firm was established as The Parthenon Group LLC in 1991 by former Bain & Company directors William "Bill" Achtmeyer and John C. Rutherford.2

Subsidiaries and ownership

Parent company

  • Ernst & Young

From Wikidata.1

Sources

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