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 biopharma specialist Cell Therapeutics (Nasdaq: CTIC) leapt more than 16% today on huge volume.

So What: So what? That may be just about the extent of it here. Without any apparent news driving the stock's move today, we're likely just seeing the typical volatility of a penny stock. There has been some recent coverage on bullish trading on Cell Therapeutics' options, so that could be having an impact, along with the options expiration coming up tomorrow.

Now What: Unexplained moves like this can bring a flutter to bulls' hearts, but in the long run, they're relatively meaningless. The primary focus for investors should continue to be whether the company can save its pixantrone cancer drug and keep its head above water. Leave the blips like this to day traders and penny-stock pumpers.

Interested in more info on Cell Therapeutics? Add it to your watchlist by clicking here.

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Fool contributor Matt Koppenheffer does not own shares of any of the companies mentioned. You can check out what Matt is keeping an eye on by visiting his CAPS portfolio, or you can follow Matt on Twitter @KoppTheFool or on his RSS feed. The Fool's disclosure policy assures you no Wookiees were harmed in the making of this article.