Euroleague Basketball Company, or Euroleague Commercial Assets (ECA) S.A., is the private company that runs and operates the top two continental-wide men's professional club basketball competitions in Europe, the first-tier Euroleague, and the second-tier Eurocup. It has been organizing the Euroleague competition since the year 2000, beginning with the Euroleague 2000–01 season. It also oversees the European national basketball league rankings, and the Euroleague Basketball Next Generation Tournament. It is headquartered in Barcelona, Spain.