Don't settle for ordinary quarterly reports.

I take a look at three companies that beat market expectations every week, 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 that 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 Mosaic (NYSE: MOS). The maker of potash for the agricultural industry came through with a profit of $1.01 a share in its latest quarter excluding a tax-related windfall, comfortably ahead of the $0.91 a share that Wall Street was expecting. It's been a lucrative niche for investors, as shares of Mosaic, Agrium (NYSE: AGU), and PotashCorp (NYSE: POT) have more than doubled over the past two years as investor interest in fertilizer hasn't been higher since before the 2008 market meltdown.

Blood-test specialist Immucor (Nasdaq: BLUD) passed Wall Street's test, earning $0.30 a share in its fiscal second quarter. Analysts -- the financial kind, not the needle-pricking variety -- figured that Immucor would only show net income of $0.27 a share for the period.

Finally, we have Robbins & Myers (NYSE: RBN). Shares of the diversified machinery maker popped 16% on Friday, after it posted $0.44 a share in quarterly earnings. Analysts would have been satisfied with a profit of $0.33 a share. Robbins & Myers also helped its cause by serving up an upbeat near-term outlook.

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.

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Longtime Fool contributor Rick Munarriz is a fan of toppers. He does not own shares in any of the stocks in this column. He is also part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early. The Fool has a disclosure policy.