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.

Interested in more info on American Superconductor? Add it to your watchlist.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. 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 is investors writing for investors.