Aena SME, S.A. is a Spanish state-owned company that manages 46 airports and 2 heliports in Spain. Through its subsidiary company Aena Internacional, it also participates in the management of another 23 airports: one in Europe (London Luton airport, of which it owns 51% of the share capital), 17 airports in  Brazil  and 16 other airports in the rest of the Americas (12 in Mexico, 2 in Colombia and 2 in Jamaica). ENAIRE, the state-owned air navigation manager in Spain and Western Sahara owns 51% of the shares of Aena, while the remaining shares are publicly-floated on the Bolsa Madrid.