Don't settle for ordinary quarterly reports.

Every week, I take a look at three companies that beat market expectations, since I believe that it's the biggest factor in a stock beating the market. Leaving Wall Street's pros with stunned expressions can be a good thing. It usually means the companies have more in the tank than analysts figured. Capital appreciation typically follows.

Let's take a look at a few companies that humbled the prognosticators over the past few trading days.

We can start with ZAGG (Nasdaq: ZAGG). The maker of protective covers for smartphones and tablets has been rolling lately. I guess iPhone and iPad owners must be pretty careful when it comes to safeguarding their Apple (Nasdaq: AAPL) gadgetry, because ZAGG's revenue soared 158% in its latest quarter. ZAGG's adjusted profit of $0.19 a share smoked past the $0.12 a share analysts were expecting.

Office supplies retailer Staples (Nasdaq: SPLS) came through with a quarterly profit of $0.22 a share. Wall Street was targeting net income of $0.20 a share, flat with last year's showing. The beat makes sense, since more problematic peers Office Depot (NYSE: ODP) and OfficeMax (NYSE: OMX) both outperformed the market's bottom-line guesstimates last month.

Then there's Bob Evans Farms (Nasdaq: BOBE). Despite a top-line dip at the restaurant chain operator with a strong grocery store retail presence, earnings soared 42% to $0.59 a share. After eyeing the comfort-food menu, analysts had ordered up a quarterly profit of only $0.51 a share.

It's important to keep watching the companies that surpass expectations. Over time, it will be a lucrative experience for investors as the market rewards the overachievers. That's the kind of surprise that we look for in the Rule Breakers newsletter service. Want in? Check out a 30-day trial subscription.

Either way, come back next Monday to learn about more stocks that blew the market away.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.