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 InterDigital (Nasdaq: IDCC), a digital wireless technology specialist, surged as much as 15% in early trading before closing up more than 13% for the day. The stock rallied on news that Samsung could make a bid for its patents.

So what: And Samsung isn't the only one. Bloomberg reports that Apple (Nasdaq: AAPL) and Google (Nasdaq: GOOG) are also looking at InterDigital's portfolio, touching off speculation that there could be a bidding war. It wouldn't be surprising. Nortel's patents fetched billions recently.

Now what: But a rumor is still a rumor until proven true. Here's hoping this one is -- because if it isn't, speculators who bought in today could be in for a whipping now that the stock trades for more than twice the long-term growth rate analysts expect. Do you agree? Disagree? Weigh in using the comments box below.

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