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What: Shares of semiconductor manufacturer Skyworks Solutions (Nasdaq: SWKS) were earthbound today, sinking as much as 11% in intraday trading.

So what: It was Charter Equity analyst Edward Snyder who brought the hammer down on Skyworks shares today when he downgraded the stock to "underperform," from "market perform," on concerns that Skyworks will lose significant chip share in Apple's (Nasdaq: AAPL) upcoming iPhone 5. He noted that the company pulled in $4 for each iPhone 4, but may only take $1 to $1.50 for each iPhone 5. This, combined with the troubles at Nokia (NYSE: NOK) and tough competition from TriQuint Semiconductor (Nasdaq: TQNT) and Avago (Nasdaq: AVGO), spells bad news for Skyworks' bottom line.

Now what: The suppliers for the iPhone 5 aren't written in stone quite yet and Snyder does hold out some hope that Skyworks' team could claw back more share, but he doesn't think it'll be possible for them to get it all back. Members of the Motley Fool CAPS community have rated Skyworks' stock four stars out of a possible five. However, many highlighted the company's relationship with Apple, so if the company continues losing its foothold with Jobs & Co., it may also find itself with far fewer fans among investors.

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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.