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 GT Advanced (NASDAQOTH:GTATQ) got crushed by as much as 21%, after the company announced a reorganization that entailed massive layoffs.

So what: The company is laying off a quarter of its entire workforce, which is expected to reduce annual expenses by $13 million. GT Advanced is consolidating its businesses and looking to reduce costs in the face of a challenging economic environment. The December quarter will see restructuring charges of about $4.2 million as a result.

Now what: Revenue for the third quarter is expected to come in on the low end of management's guidance of $110 million to $140 million, with complete earnings results to be released on Nov. 6. CEO Tom Gutierrez said that Asian customers are "experiencing severe financial difficulties," and believes that the company's core markets will be challenging next year. However, the company remains optimistic about its long-term prospects in the solar and LED markets.

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Evan Niu, CFA, has no positions in the stocks mentioned above. The Motley Fool has no positions in the stocks mentioned above. 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.