Trying to time the market is not a good idea. That's doubly true when you know volatility is right around the corner. 

That's an important disclaimer for this article, because I'll be introducing three stocks that have a very high probability of making huge moves in the week ahead. That's because all three are reporting quarterly earnings, and all three are heavily shorted -- or have lots of investors betting against them. If you don't believe me, just look at the three stocks I singled out last week, which moved an average of 7% after reporting earnings.

Using this information to try and make a quick profit, however, is dangerous. While I know there's a high likelihood of outsized moves in store, there's no way to tell you if those moves will be up or down.

Instead, I think it's vital that long-term shareholders of Stratasys (NASDAQ:SSYS), Abercrombie & Fitch (NYSE:ANF), and Amabrella (NASDAQ:AMBA) -- the three stocks for this week -- ignore the noise and focus on what really matters when these companies report. To find out what those important metrics are, check out the slideshow below.

Sources: Stratasys, GoPro, Abercrombie & Fitch.