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 (NYSE:GME)Abercrombie & Fitch (NYSE:ANF), or Veeva Systems (NYSE:VEEV), 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

Brian Stoffel owns shares of Veeva Systems. The Motley Fool recommends GlaxoSmithKline and Veeva Systems. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.