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: NTELOS Holdings (Nasdaq: NTLS) dropped 12% in intraday trading today after reporting a significant earnings miss.

So what: EPS of $0.30 fell 3% year over year, and badly missed the $0.35 consensus estimate. Operating revenue grew 17% year over year to $155 million.

Now what: Despite the strong revenue growth, operating income fell 2% year over year to $31.3 million. Management stated it "remain[s] confident in ongoing improvements in wireless subscriber and financial results" and the company is "well positioned for significant data revenue growth in the Competitive segment later this year and in 2012."

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