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 longtime Motley Fool Rule Breakers recommendation Akamai Technologies (Nasdaq: AKAM) fell close to 16% in intraday trading, after guiding to roughly zero sequential growth in the second quarter.

So what: First-quarter results beat expectations, but management's Q2 outlook disappointed investors. Q1 revenue grew 15% to $276 million, while normalized net income improved 9% year over year to $0.38 a share over the same period. Executives offered more of the same in the second quarter. By contrast, Wall Street had been calling for modest sequential improvements in both revenue and earnings.

Now what: Mostly, it appears that investors fear that Akamai's growth-stock days have ended. Competitive pressure from Limelight Networks (Nasdaq: LLNW) and AT&T (NYSE: T) partners Cotendo and EdgeCast are taking a toll, the bears will say.

Maybe they're right, but let's at least be patient enough to hold management to its word. In Q4, CEO Paul Sagan said growth would accelerate in the second half of the year, when the benefits of short-term pricing sacrifices made to secure long-term agreements would begin to appear.

Interested in more info on Akamai? Add it to your watchlist.

Fool contributor Tim Beyers is a member of the Motley Fool Rule Breakers stock-picking team. Akamai is a Rule Breakers recommendation. AT&T is a Motley Fool Inside Value pick. You can try any of our Foolish newsletter services free for 30 days.

Tim owned shares of Akamai at the time of publication. Check out his portfolio holdings and Foolish writings, or connect with him on Twitter as @milehighfool. You can also get his insights delivered directly to your RSS reader. 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 is also on Twitter as @TheMotleyFool. Its disclosure policy is at least 10% better than other disclosure policies.