In 2005, Amadeus was delisted from the Paris, Frankfurt and Madrid stock exchanges when BC Partners and Cinven bought their stake from three of the four founding airlines and the rest of the capital floated from institutional and minority shareholders. The transition from distribution system to technology provider was reflected by the change in its corporate name to Amadeus IT Group in 2006, . In 2009, Amadeus invested about €257 million in R&D.[11][12] Amadeus was listed on the Spanish Stock Exchanges on 29 April 2010.[13]