I can't say with 100% certainty that the three stocks I'm talking about today will make huge moves this week. But I'd feel comfortable putting that figure at about 95% sure.

That's because all three stocks are heavily shorted and reporting earnings this week. That's a recipe for volatility. If you don't believe me, check out the three stocks from two weeks ago that I identified, which moved an average of 13%.

But I don't think you should try and turn a quick buck off of these moves. That's because (1) it's not a Foolish way to invest, and (2) there's no telling whether these stocks will move up or down. Instead, if you already own shares of GameStop (GME 3.08%)Abercrombie & Fitch (ANF 2.70%), or Veeva Systems (VEEV -0.62%), I think you should find out what long-term investors should focus on -- instead of the normal headline numbers.

Photos: GameStop, Abercrombie & Fitch, Veeva Systems