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 wind turbine specialist American Superconductor (Nasdaq: AMSC) were facing some turbulent currents today as they slid as much as 13% in intraday trading before recovering substantially.

So what: What a mess. Currently trading at $8 and change, American Superconductor's stock is already well off of the high-$30s price tag that it held late last year. The company is locked in a dispute with China's Sinovel, which was American Superconductor's largest customer and has provided the majority of its sales for years. But in a filing yesterday, the company said that it will be restating its financials for September and December of last year as it apparently struggles to collect from other Chinese companies. September's sales will be lowered from $102 million to $98 million, and December will plummet from $114 million to $43 million. The company also said it expects to report full fiscal year revenue of $307 million -- well below the $360 million that analysts were looking for.

Now what: While the stock has already taken quite a pummeling since the beginning of the year, I'm a little surprised that it's fared as well as it has today. As I write, the stock continues to recover, suggesting that investors may not be all that concerned with this latest revelation. According to Forbes, though, the same can't be said for Jefferies analyst Jesse Pichel, who cut his price target on the stock to $6 and called it "uninvestable."

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Fool contributor Matt Koppenheffer does not have a financial interest in any of the companies mentioned. You can check out what Matt is keeping an eye on by visiting his CAPS portfolio, or you can follow Matt on Twitter @KoppTheFool or Facebook. The Fool's disclosure policy prefers dividends over a sharp stick in the eye.