What's better than momentum? Mo' momentum. Let's take a closer look at five of this past week's biggest scorchers.

Company

Dec. 14

Weekly Gain

My Watchlist

Clearwire (NASDAQ: CLWR)

$3.37

41%

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Celldex Therapeutics (CLDX -3.78%)

$6.70

21%

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Alpha Natural Resources (NYSE: ANR)

$9.68

17%

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Solazyme (TVIA)

$8.60

17%

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ZAGG (ZAGG)

$7.80

12%

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Source: Barron's.

Clearwire soared after Sprint Nextel (S), Clearwire's biggest customer and stakeholder, proposed a $2.1 billion deal to swallow its WiMAX network partner whole.

Celldex Therapeutics climbed after releasing encouraging phase 2 clinical trial data for its promising drug candidate as a treatment for breast cancer.

Alpha Natural Resources is one of the country's largest coal producers. This has been a difficult sector over the past year, and Alpha Natural Resources has been one of the market's biggest laggards in that time. However, coal stocks have been bouncing back since taking a hit after last month's presidential election. Investors are starting to get encouraged by the overseas prospects of domestic coal producers as exporters.

Solazyme got moving after the biofuel maker achieved commercial-scale production at a new Iowa facility. The biofuel production is four times greater than it has achieved at its Illinois plant.

ZAGG, the company behind the popular invisibleSHIELD screen protectors for smartphones and tablets and other third-party accessory products, posted a double-digit percentage gain after refinancing its debt and approving a small share repurchase plan.

More winners for you
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