Antin Infrastructure Partners, a private equity firm, completed the investment in Proxima, the first independent high-speed train operator in France. Financial terms were not disclosed. "We are delighted to provide our support to Proxima. The great knowledge of the French market brought by Rachel Picard and Tim Jackson, the partnerships concluded with Alstom and Lisea and Antin's expertise in financing infrastructure projects are the winning combination that will make Proxima a success," Alain Rauscher, Antin Infrastructures Partners Chairman and CEO.