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November 7, 2011  Mon 7:26 AM CT

TKLC: SEE CHART GET CHAIN FIND STRATEGIES
Deal Values Tekelec at $780 Million

Tekelec, a maker of networking technology, agreed to be purchased by Siris Capital for $11 a share. TKLC pops 11 percent before the bell.

Pharmasset Lifted by Hep-C Data

Pharmasset released data over the weekend showing promise of its PSI-7977 compound in fighting Hepatitis C. Those results were from a Phase II trial, and now support the case for more advanced Phase III testing. VRUS climbs 9 percent in the premarket.

Omnivision Lowers Outlook

Omnivision Technologies cut its outlook in a preliminary earnings release because of an "unexpected cutback in orders." Management now sees revenue of now more than $217 million, down from an earlier $255-275 million estimate. OVTI drops 17 percent in the pre.
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The Strike-Based Greeks

The other Greeks (Gamma, Vega, and Theta) are calculated by using month and strike data, and not by individual option. These are called strike-based Greeks. Gamma, Theta, and Vega are all strike-based Greeks

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