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April 19, 2013  Fri 7:34 AM CT

VRTX: SEE CHART GET CHAIN FIND STRATEGIES
Improved Lung Function Cited

Vertex Pharmaceuticals said its VX-661 compound improved breathing for patients suffering from cystic fibrosis. The Phase II study combined the drug with another one of the company's products that is already in the market. VRTX rockets 61 percent before the bell on my tradeMONSTER platform.

Dell Lower as Blackstone Backs Out

Dell had surged on takeover chatter, but now Blackstone Group is backing out. The private-equity firm cited the recent plunge in PC sales as the reason. DELL falls almost 3 percent in early trading.

Air Methods Expects Surprise Loss

Air Methods said it expects to report a first-quarter loss of $0.14 to $0.16 a share. Analysts, however, had expected profit of $0.32 a share from the medical-transport company. AIRM drops 17 percent in the premarket.
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The Movement of Delta

In our last column, we spoke about delta. You might remember that we discussed what delta was and what factors affected or changed delta. As you recall, we stated that three factors will have an effect on delta. They were movements of time, volatility, and underlying price. Today, we want to take a further look into the change of delta, this time focusing on change due to the movement in the underlying price. 

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