Clear Channel Communications' stock fell amid reports of a slowing economy and weak retail sales growth. The company on Aug. 30 completed its acquisition of AMFM Inc. for stock and assumed debt. The $23.8 billion deal makes Clear Channel the largest U.S. radio company with about 900 stations (plus 19 TV stations and more than 700,000 outdoor ad displays). Clear Channel climbed to $85 in early August but fell below $70 in late week trading last week. On Friday, it closed at $68.56, off 11.76% for the week.