Greetings, Fools. It's once again time to divine -- with quite a degree of accuracy -- which stocks will be making big moves on Wall Street in the week ahead. Last time I made such a prediction, the average stock moved 19% on the date I predicted. This week, I believe that shares of on-line car-buying specialist TrueCar (TRUE 0.66%), retailer Nordstrom (JWN 0.38%), and Sam Adams' parent Boston Beer (SAM -1.55%) will be the big movers.

Why do I think this? Because all three of these companies are heavily shorted --or have investors betting against them -- and all three are reporting earnings. When these two forces combine, volatility is almost always the result.

But I don't suggest trying to make a quick fortune based on this information. You can just as easily lose a quick fortune. Instead, I think current shareholders need to be prepared for the volatility, and be able to differentiate between noise, and an actual signal in the week ahead. That's what's included in the slideshow below.

A better way to help pay for retirement: the $15,978 Social Security bonus most retirees completely overlook
If you're like most Americans, you're a few years (or more) behind on your retirement savings. But a handful of little-known "Social Security secrets" could help ensure a boost in your retirement income. In fact, one MarketWatch reporter argues that if more Americans knew about this, the government would have to shell out an extra $10 billion annually. For example: one easy, 17-minute trick could pay you as much as $15,978 more... each year! Once you learn how to take advantage of all these loopholes, we think you could retire confidently with the peace of mind we're all after. Simply click here to discover how you can take advantage of these strategies.

Photos: TrueCar, Nicholas Eckhart--via Flickr, Boston Beer.