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: Nuance Communications (Nasdaq: NUAN) popped 14% in intraday trading today on speculation that Apple (Nasdaq: AAPL) may be interested in acquiring the company.

So what: Nuance's suite of products includes voice control and text-to-speech for mobile devices. Adding such capabilities to mobile products such as the iPhone and iPad could help Apple compete with Research In Motion (Nasdaq: RIMM) and devices based on Google's (Nasdaq: GOOG) Android operating system.

Now what: A story in TechCrunch last Friday stated that Nuance and Apple have been negotiating a deal for months, but the nature of the deal was unknown. It could be an agreement for Nuance to sell products or license technology to Apple. Nuance's $6.5 billion market cap makes it significantly larger than any company Apple has acquired, making some think an acquisition is unlikely.  

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Fool contributor Cindy Johnson does not own shares of any company named above. 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.