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 computer security specialist SourceFire
So what: SourceFire has no news of its own to explain this move, and shrugged off an analyst upgrade without much of a market reaction Friday. But fellow network security experts FortiNet
Now what: None of the jumping security stocks has anything major going on today and none of the spikes had much staying power. This could be a delayed and somewhat misdirected reaction to buyout news elsewhere in the enterprise computing sector, or perhaps a well-heeled hedge fund or mutual fund opening large positions in the security sector. If it's the latter, we'll see the details in Form 4 or Form 13 SEC filings over the next few weeks, and if not, you can chalk this up to another one of Mr. Market's nutty antics.
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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.