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Largest option trades in equities

David Russell (david.russell@optionmonster.com)

Nearing the halfway mark in today's session, here are the individual equity names with the most call and put buying on optionMONSTER's ActionTracker data system.

Xoma (XOMA): Some 3,400 October 5 calls were bought for $0.50 as investors look for continued upside in the drug developer. XOMA rose 4.39 percent to $4.64.

URS (URS): More than 3,100 November 50 puts were bought, mostly for $1.40, as investors brace for a pullback in the construction firm. URS rose 0.50 percent to $51.97. (See related story )

Myriad Genetics (MYGN): some 2,300 October 27 calls were purchased, mostly for $0.40, as investors look the drug developer to rally. MYGN rose 0.22 percent to $24.71.

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