Using weekly search frequency data for Russell 3000 and Initial Public Offering (IPO) stock ticker symbols over the period January 2004 through June 2008, along with contemporaneous trading, firm characteristics and news data, they conclude that: (cxoadvisory.com)
Our Free Level II tool will assist you in your trading, and update you on the latest market action for your penny stock ticker symbol. (jetlifepennystocks.com)
Additionally, STAM, CUBS, and SOX are not valid stock ticker symbols. (aaii.com)