Clear Channel Outdoor | 54,015 followers on LinkedIn. We're at the forefront of driving innovation in the out-of-home advertising industry. Get More With Us. | Clear Channel Outdoor Holdings, Inc. (NYSE: CCO) is at the forefront of driving innovation in the out-of-home advertising industry. Our dynamic advertising platform is broadening the pool of advertisers using our medium through the expansion of digital billboards and displays and the integration of data analytics and programmatic capabilities that deliver measurable campaigns that are simpler to buy.