Shares of Research in Motion took a bit of a hit in after-market trading the moment its earnings were released. Seems like a classic "sell on the news" kind of reaction, but this stock could yet turn around during the company's conference call.

On their face, RIM's numbers are blockbuster: 50 cents a share; $1.37 billion in revenue; 3 million handsets shipped, 1.45 million new subscribers. All those categories are up sharply, both year over year and sequentially. Trouble is, when a stock runs up 40% in just three months, much of this growth was already built into shares. That's the reason for the sell-off.