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 circuit board builder TTM Technologies (Nasdaq: TTMI) jumped more than 11% overnight with a large spike in trading volume.

So what: The longtime Stock Advisor recommendation took a look at the ongoing quarter, liked what it saw, and kicked its quarterly guidance up a couple of notches. Both sales and earnings will easily beat the original guidance and Street estimates when TTM files a proper report in mid-February.

Now what: The guidance upgrade rests on high demand, and the market is taking it as a good sign for the circuit board industry as a whole. Fellow quick-turn board maker DDi (Nasdaq: DDIC) is trading more than 4% higher on a generally blah market day and occasional rival Sanmina-SCI (Nasdaq: SANM) is up by 2.5%. But you shouldn't map this turn of events to surging consumer electronics demand, tempting as it may be: TTM's largest customers are defense giants and network equipment specialists.

Interested in more info on TTM Technologies? Add it to your watchlist.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. TTM Technologies is a Motley Fool Stock Advisor selection. 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 is investors writing for investors.