Latin America-focused private equity firms ACON Investments and Humus Capital Partners have acquired a majority stake in Biosidus and Biosidus Farma, an Argentina-based manufacturer and distributor of biosimilar pharmaceuticals. ACON invested through ACON Latin America Opportunities Fund IV. Biosidus exports to more than 25 countries across four continents. The company plans to use the new capital to continue its international expansion strategy. Financial details of the transaction were not disclosed.