EY-Parthenon: Geostrategy and transformational M&A. - June 24, 2026 -
Join Andrea Guerzoni, EY-Parthenon Global Vice Chair, and Bill Achtmeyer, Parthenon Group Founder, discussing how a 30-year legacy was created.https://www.ey.com/en_gl/services/strategy/parthenon
In this interview, moderated by James O’Dowd, EY-Parthenon explores its journey from the early roots to a 25,000-person global organisation operating in more than 120 countries.
The conversation looks at how EY-Parthenon built distinctive, end-to-end capabilities across strategy, transactions and transformation, and why M&A remains a central lever for strategic change. The speakers discuss how organizations can use deals to augment market position, enter adjacent spaces and capture synergies, while ensuring each move makes strategic sense and creates value.
We hear how EY-Parthenon has embedded geopolitical analysis into deals and strategic advice, including establishing a dedicated unit to inform teams and clients, and developing solutions that bridge scenario planning with practical decisions across contracts, operating models, tax, regulatory policy and supply chain. The interview also highlights how AI can act as an accelerator, helping leaders identify patterns more clearly and strengthening decision-making when speed and uncertainty reshape the C-suite agenda.
The speakers reflect on the purpose and culture that bind a global organization, and the importance of helping clients move forward with integrity. They discuss how sustained value creation is built over time, not through a single assignment, and how scale and collaboration enable teams to support clients in navigating complexity and driving long-term growth.
Key topics covered in this video:
• Explore how EY-Parthenon operates as a 25,000-person organisation across 120+ countries
• Connect geopolitical scenario analysis to actionable deal and business decisions
• Explain why M&A remains a transformational lever and an accelerator for strategic change
• Examine how AI can help reveal patterns and support faster, higher-confidence decisions
• Highlight how cross-service line capabilities enable end-to-end strategy and execution.
🔍 Learn more about EY-Parthenon: https://www.ey.com/en_gl/services/strategy/parthenon
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