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 NetScout Systems (Nasdaq: NTCT) are surging today, up by 22% at the high, after reporting strong second-quarter earnings this morning.

So what: The company's second-quarter revenue tallied up to $72.6 million, which resulted in earnings per share of $0.24. Both figures bested the consensus estimates of $69.9 million in revenue and $0.22 earnings per share.

Now what: NetScout CEO Anil Singhal said, "For the quarter, new business and total bookings increased 30% year over year. All of our major verticals were strong, with financial services and government bookings up substantially." The company is sticking with its previously issued full-year guidance of revenue between $300 million and $315 million, with non-GAAP net income expected between $1.07 and $1.19. It's a solid earnings report that's giving investors plenty of reason to cheer today.

Interested in more info on NetScout Systems? Add it to your watchlist by clicking here.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.