Keolis is the largest private sector French transport group. It runs passenger railways, tramways, bus networks, funiculars, trolley buses, and airport services. Based in Paris, Keolis is owned by the SNCF (French National Railways Corporation) at 70% and the Caisse de dépôt et placement du Québec which is translated as Quebec Deposit & Investment Fund (public pension plans in the province of Quebec) at 30%.
In 2013, Keolis turned over €5.1 billion. As at December 2013, Keolis employed 54,600 people in France, Australia, Belgium, Canada, China, Denmark, Germany, India, Luxembourg, the Netherlands, Norway, Portugal, Sweden, the United Kingdom and the United States. It is the largest provider of public-transportation services in France.
Keolis holds a 50% shareholding in Keolis Downer that has operated the Melbourne tram network since November 2009. Keolis Downer has operated the G:link light rail line on the Gold Coast since July 2014.
In March 2015, Keolis Downer purchased bus operator Australian Transit Enterprises which operates the Hornibrook Bus Lines, Link SA, Path Transit and SouthLink operations with 930 buses.