The firm typically invests between €5 to €45 million in small and mid-cap French small and medium sized businesses. Notable investments made by ActoMezz include: Sylpa, Travelsoft, Ellisphere, Tournus Equipment, Passman, Lease Protect, Bioclinic, Solware, Joryf, Biogroup-LCD, Prenax, Groupe Walor International, Document Store, Sogetrel, Furnotel, NACC, Emeraude, Groupe RG, Domidep, CESA, Sodime, Sotralu, Vignal, Legallais, and Faab.
In 2007, ActoMezz announced raising €187 million in capital for their Acto Mezzanine 2007 fund.
In 2013, ActoMezz announced raising €209 million in capital for their Acto Mezzanine 2013 fund.
In 2017, ActoMezz announced raising €315 million in capital for their ActoMezz III fund.