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.

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