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 Frontier Communications (FTR) have gotten crushed today by as much as 11% after reporting earnings.

So what: Revenue in the quarter was $1.3 billion, which resulted in net income of $67 million, or $0.07 per share. Those results were right on target with what the market was expecting. Free cash flow in the third quarter was $215.3 million.

Now what: Frontier narrowed its customer losses, losing just under 52,000 customers during the quarter. That's less than each of the past two quarters. Full-year guidance calls for free cash flow in the range of $900 million to $1 billion. Frontier is a popular dividend play, so don't miss fellow Fool Eric Bleeker's breakdown of the results by clicking here.