Stocks to Watch: Frontier Airlines Flies, Mentor Graphics Sinks

The Day's Winners

Shares of Action Performance (ATN Quote) were rising 5% to $26.91 after the company, which makes motorsports collectibles, said its third-quarter revenue will meet or exceed estimates. The company said it will record revenue of at least $106 million to $107 million, compared to Wall Street's consensus estimate of $107 million.

Auto supplier Aftermarket Tech (ATAC Quote) was gaining 3% to $19.63 after raising its second-quarter earnings guidance. The company expects to earn 46 cents a share, up from a previous forecast of 44 cents. Analysts are looking for 44 cents. Aftermarket said the new outlook comes despite "softening" in its drivetrain segment due to the mild winter weather. The company also reiterated its goal of $1.90 per share for the year.

Frontier Airlines (FRNT Quote) was climbing 10% to $8.28 on an upgrade from Raymond James. The brokerage firm raised its rating on Frontier to buy from market perform, saying that investors should be able to realize a "very good" return from the stock over the next year. The firm set a new price target of $11 on Frontier. ...