Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of online marketing software technologist Constant Contact (NASDAQ:CTCT) soared 28% today after its preliminary quarterly results topped Wall Street expectations.

So what: Constant Contact shares have slumped in 2014 on concerns over slowing growth, but today's upbeat view -- management now sees 16% full-year revenue growth versus a prior view of 13% -- is quickly easing those worries. Additionally, management expects full-year EBITDA margin to expand 200 basis points, to roughly 18.2%, suggesting that its competitive position and cost structure are improving, as well.

Now what: Management now expects Q1 revenue of $78.7 million-$78.8 million, and a full-year top line of $330 million, versus the consensus of $77.34 million and $323.38 million, respectively. According to CEO Gail Goodman:

In the coming weeks, we will be rolling out significantly enhanced bundles that combine products and capabilities to deliver a more powerful experience for our customers. This is an exciting milestone in our evolution from an email marketing company to a robust marketing platform for small businesses. We expect this will drive higher average revenue per user (ARPU) and improved customer retention rates, while driving a meaningful acceleration of revenue growth in 2014 and beyond.

Of course, with the stock now up about 140% over its 52-week lows, and trading at a 25-ish forward P/E, I'd wait for a wider margin of safety before buying into that growth.

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Brian Pacampara has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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