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 power-transmission technologist American Superconductor (Nasdaq: AMSC) dropped as much as 10.6% on heavy trading before recovering to a much smaller drop.

So what: The fall stems from American Superconductor buying a smaller rival known as The Switch Engineering. Though the deal is expected to add to the bottom line immediately, investors are clearly not jazzed about this deal.

Now what: Of course, the company lowered its 2011 guidance to account for acquisition costs. I still don't see how it could be a bad move to get into Switch's core market of wind-powered generators, with financial windfalls starting almost right away. We know that Mr. Market is myopic, and you may want to take a closer look at this well-managed company while the old dude is finding his glasses.

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