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 voice over Internet protocol technologist Interactive Intelligence (Nasdaq: ININ) got a bad signal today, falling a precipitous 14.8% as of this writing on heavy volume, and might go lower still when the day is done.

So what: Interactive Intelligence's first-quarter sales easily topped Street estimates, adjusted earnings beat analyst consensus by a penny, and management guidance came in above the current zeitgeist. Then again, the stock had raced ahead by 32% over the previous three months, leaving it ripe for an adjustment.

Now what: One analyst firm downgraded the stock from buy to hold, while another raised its one-year price targets to $46 per share -- whom do you believe? For the record, Interactive Intelligence is growing sales and earnings faster than peers ShoreTel (Nasdaq: SHOR) and Nuance Communications (Nasdaq: NUAN), while also sporting wider margins. Interactive may trade at a market premium, but sometimes you get exactly what you pay for -- which is what makes this stock a true Rule Breaker.

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

Fool contributor Anders Bylund holds no position in any of the companies discussed here. Interactive Intelligence is a Motley Fool Rule Breakers selection. Nuance Communications is a Motley Fool Stock Advisor recommendation and a Motley Fool Hidden Gems selection. 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 is investors writing for investors.