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 teeth-straightening specialist Align Technology Inc. (NASDAQ:ALGN) surged 26% today after its quarterly results and outlook topped Wall Street expectations.

So what: The stock has soared in 2013 on strong sales of its Invisalign braces, and today's third-quarter results -- earnings of $34.5 million on a revenue surge of 21% -- coupled with upbeat fourth-quarter guidance suggests that the momentum isn't slowing. In fact, Invisalign shipments for the quarter climbed 15% while gross margins increased 250 basis points, giving investors plenty of good vibes over its competitive position going forward.

Now what: Management now sees fourth-quarter EPS of $0.41-$0.43 on revenue of $169.1 million-$173.1 million, well above Wall Street's view at $0.36 and $164.3 million, respectively.

"We continue to deliver solid execution of our long-term strategic plan and expect to continue those key initiatives, which are at the core of our progress," CEO Thomas Prescott said in a conference call. "Our results also reflect stable patient traffic in our customers' offices and their willingness to let us become a more significant part of their practices."

Of course, with the shares soaring to a new 52-week high today and trading at a 35-plus forward P/E, I'd wait for some of the excitement to fade before buying into that bullishness.

Fool contributor Brian Pacampara has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. 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 has a disclosure policy.