The drug store chain moved to number four, from 24th, on last week’s Media Monitors chart of top radio advertisers. CVS ran 26,784 commercials on radio stations across the country. GEICO was on top of the chart once again with 32,758 spots. Walgreens was second with 28,309, followed by Indeed.com with 27,264. The US Department of Transportation was fifth airing 24,818 commercials.