IDI is a  partnership limited by shares under the majority control of Ancelle et Associés. Directed by Christian Langlois-Meurinne, Ancelle et Associés is both manager and general partner of IDI. The IDI teams comprise professional investors from different backgrounds offering complementary expertise.


Managing partner


Christian Langlois-Meurinne

Chairman of Ancelle & Associés SAS Managing Partner of IDI. A graduate of Ecole Polytechnique with an MBA from Harvard, Christian has more than 50 years of experience in the investment sector with IDI, for which he oversaw the buyout in 1987. He was previously Director of Chemical, Textile and Allied Industries at the French Ministry of Industry from 1979 to 1982.

Executive Committee 

The IDI Executive Committee comprises the company’s main operational and support function managers.

Julien BentzManaging Partner
Executive Committee

Marco de AlfaroPartner
Executive Committee

Tatiana NourissatCorporate Secretary and General Counsel - ESG Manager
Executive Committee


Download the Articles
of Association


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Download the Supervisory
Board’s internal rules
of procedure


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Rules of procedure of the CSR committee


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We have the skills and financial resources needed to help portfolio companies pursue their external growth strategy, whether in France or overseas, with the same goals in mind: stronger positioning and long-term development.

With the expertise of its subsidiary IDI Emerging Markets ($650M in assets under management), the group also operates in private equity in emerging countries.