Every week has its fair share of stocks that make huge moves. But i's not often that we can know what stocks will be making such moves before it actually happens.

Motley Fool contributor Brian Stoffel, however, has been successfully calling out stocks that would make big moves -- before it actually happens -- for over a year now. By focusing on two key variables, it's actually been a very simple exercise.

Brian doesn't think it's wise to try to time the market. Instead, he offers up these videos to let investors in certain companies know that they should prepare themselves mentally for volatility in their holdings before it actually happens.

To find out which two companies will likely be making such big moves this week, and why they'll be making them, check out the following video.