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 PMC-Sierra (NASDAQ:PMCS) bottomed out at a 10% loss early in the day, and have now settled into a loss of about 7%, thanks to a disappointing earnings report.

So what: PMC's revenue dipped by 7% year over year to $127.9 million, and earnings per share fell 11% year over year to $0.08. While the EPS result hit Wall Street's target, revenue fell short of the $130.4 million consensus. Guidance for the third quarter, which set a revenue range of $126 million to $134 million, also came in a bit below the consensus of $137.8 million.

Now what: No one likes to hear about the "uncertain environment" of a wobbly economy, but CEO Gregory Lang made note of this issue even as he provided soft guidance for the future. PMC's EPS and free cash flow both remain near multiyear lows, and even after today's drop it seems as though the stock might not be cheap enough. I'd wait on the sidelines while these problems are worked out.

Want more news and updates? Add PMC-Sierra to your watchlist now.

Fool contributor Alex Planes 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.