SAN ANTONIO--(BUSINESS WIRE)--Clear Channel Outdoor Holdings, Inc. (NYSE:CCO) today reported financial results for the second quarter ended June 30, 2015. “We continue to provide advertisers and agencies with opportunities to use out-of-home advertising to test creative boundaries and create an even deeper sense of engagement with consumers, both in our Americas and International outdoor business,” said Bob Pittman, Chairman and CEO of Clear Channel Outdoor Holdings, Inc. “Outdoor provides trem