|Company Name||# of Hedge Funds||# of Insiders Buying||# of Insiders Selling|
|Millennial Media, Inc. (NYSE:MM)||12||0||5|
|MDC Partners Inc. (USA) (NASDAQ:MDCA)||6||0||0|
|Clear Channel Outdoor Holdings, Inc. (NYSE:CCO)||9||0||1|
|National CineMedia, Inc. (NASDAQ:NCMI)||14||0||2|
|Valassis Communications, Inc. (NYSE:VCI)||15||0||7|
With the returns demonstrated by Insider Monkey’s research, everyday investors must always watch hedge fund and insider trading activity, and Arbitron Inc. (NYSE:ARB) is an important part of this process.