CCO

Clear Channel Outdoor Holdings, Inc.

One of the world's largest outdoor-advertising companies, Clear Channel Outdoor owns and runs the billboards, digital screens, and transit and airport ads that line highways and cities across the Americas, Europe, and Asia. Its roots stretch back to 1901, when Walter Foster and George Kleiser began leasing land and putting up standardized wooden billboards in the Pacific Northwest. The "Clear Channel" name actually comes from radio engineering, where a clear-channel station broadcasts with interference-free reach — and in 2019 the billboard business split off from its parent broadcaster to stand on its own.