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 digital media transport specialist Silicon Image (Nasdaq: SIMG) are trading down by more than 10.7% today on increasingly heavy volume.

So what: There's no specific news on which to pin this move, which may be a reason in and of itself. The CES electronics show came and went and nobody got too excited about high-definition multimedia interface (HDMI) technology, so Silicon Image investors are taking some profits off the table today.

Now what: The share price has doubled in the past six months even after this free-fall exercise. HDMI technology, which is the bread and butter of Silicon Image's operations, will remain an important part of the home entertainment puzzle for years to come. You don't have to like what Silicon Image does in order to profit from the results. Feel free to buy on this dip, because it's sure to be temporary.

Interested in more info on Silicon Image? Add it to your watchlist.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. 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 is investors writing for investors.