The broader indexes were down 4-5%, and a few radio stocks escaped serious bloodshed. Beasley and Saga were down less than 1%, and Internet radio stock Pandora actually gained 2%. But CBS dropped $2.49 a share, down 9% to $24.21. Percentage-wise, Entravision (down 22% to $7.26) and Emmis (down 13% to 81 cents) looked the worst. Westwood One, awaiting a sale, slid 13% to $5.85. But many radio stocks dropped just about as much as the Dow (-4%) and the Nasdaq (-5%). Arbitron lost 5%, as did Cumulus, Entercom, Journal and Salem. One stock barely moved: Global Traffic Network, which accepted a cash buyout offer of $14 a share earlier this week from GTCR, and lost just two cents yesterday to close at $13.94.

The stock market dive caused changes in programming. CNBC went commercial-free for the last hour of trading, 3-4pm Eastern time. While Fox News Radio is offering its hourly "Fox Business Reports" to all of its regular "five-minute affiliates", through Friday, August 5. The :60 updates are downloadable on the affiliate website.