Investment management and asset-owner experience
PNYX brings together senior investment management, portfolio construction, sovereign-finance, governance and quantitative experience.
Dr. Elisabeth Bourqui
CEO, CIO and Co-FounderSwitzerlandDr. Bourqui brings more than two decades of leadership across sovereign, public-pension, corporate-pension and insurance portfolios. Her experience at ABB, CalPERS, Mercer and Société Générale spans total-fund strategy, investment governance, dynamic allocation, asset-liability management, direct investments and implementation across complex global portfolios.
IPE Hall of Fame · Pension Fund Achievement of the Year 2017View LinkedIn profile
Professor Didier Cossin
Chairman and Co-FounderSwitzerlandProfessor Cossin is an investor and a financial and behavioural strategist specializing in governance, stewardship and investment decision-making. He founded the IMD Global Board Center and has advised boards, governments, sovereign institutions and major organizations internationally. His work connects governance quality, institutional leadership, investment oversight and long-term performance.
View LinkedIn profile
Costas Lemos
Investment Manager and Deputy CEOSwitzerlandMr. Lemos brings three decades of experience advising institutional investors, including 27 years at Edmond de Rothschild. He specialises in OCIO services, strategic asset allocation and portfolio construction, due diligence and manager selection across liquid and illiquid asset classes, portfolio transitions, risk management, hedging and cost optimisation. His experience includes serving as pension fund board vice-chairman and investment committee member.
View LinkedIn profile
Christopher Collie
Partner and Managing DirectorArabiaMr. Collie is an international governance and sovereign-finance specialist. His experience includes senior intergovernmental negotiations, institutional policy design, structural reform and the legal, financial and operational dimensions of macroeconomic assistance. He supports public institutions in translating policy objectives into durable governance and implementation structures.
View LinkedIn profile
Philippe Mudry
Senior AdvisorFranceMr. Mudry brings more than four decades of experience analysing European and global economic, market and geopolitical developments. His expertise includes corporate governance, particularly within large corporations, and relationships with European political authorities and institutions. Through senior leadership roles in French financial and business media, he has developed a broad perspective on institutional decision-making, governance and the forces shaping investment environments.
View LinkedIn profile
Hani Tabsh
DirectorCanadaMr. Tabsh brings over 15 years of experience across public and private markets in portfolio management, investment underwriting and institutional governance. A former family office COO, private equity sponsor and investor, and business operator, he has managed multi-asset portfolios and served on multiple boards and investment committees. He combines an asset owner’s total portfolio perspective with an operator’s understanding of underlying businesses to assess managers, challenge investment assumptions and evaluate portfolio risk and return.
View LinkedIn profile
Arnuv Mayank
Investment ManagerCanadaMr. Mayank joined PNYX in July 2024 as an Investment Manager and member of the quantitative analysis team, where he supports portfolio construction and optimization, manager and direct investment due diligence, and market research for PNYX's various clients. Mr. Mayank has a BComm in Finance and BSc (Honours) in Mathematics with a concentration in Mathematical Finance from the University of Calgary, graduating with the Gold Medal in Commerce.
View LinkedIn profile
Jan MacKinnon
Quantitative AnalystCanadaMr. MacKinnon supports institutional asset owner mandates through quantitative investment research, total portfolio optimization, risk analysis, and investment due diligence. His work includes asset allocation modelling, portfolio analytics, scenario analysis, manager research, and the assessment of emerging investment themes and technologies. He holds B.A. and M.Sci. degrees in Physics from the University of Cambridge, with a strong background in machine learning, statistical analysis, financial mathematics, stochastic processes, and mathematical modelling.
View LinkedIn profile
Clark Cossin
Manager of Investor RelationsSwitzerlandMr. Cossin leads investor relations with a strong focus on understanding each client’s priorities and meeting their needs at every step. He is known for going the extra mile to service clients, being thorough in his work and going deep into the details required to provide responsive, well-informed support. Before joining PNYX, he worked at an activist hedge fund, where he gained experience assessing businesses, engaging with investment ideas and communicating with stakeholders. He holds an MPhil from the University of Cambridge and a degree in History from the University of St Andrews.
View LinkedIn profileSarah Jermyn
Manager of Communications / Project ManagerCanadaMs. Jermyn leads strategic communications, stakeholder engagement and project coordination for PNYX. She supports sovereign and institutional mandates through client-facing materials, research, proposals, event programming and strategic outreach, and works with government and investment stakeholders across jurisdictions in English and French.
View LinkedIn profileA connected international team
Our team works across Switzerland, Canada, the United Kingdom, France, the Middle East and Japan, bringing local perspective to long-term investment decisions. Switzerland is our Global Head Office, Canada is our North American Office, and Japan provides advisory representation.
Discuss your investment priorities
Tell us about the portfolio question or opportunity you are considering and how PNYX may be able to help.
Contact the team