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November 12, 2013  Tue 10:11 AM CT

GERN: SEE CHART GET CHAIN FIND STRATEGIES
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.

Geron (GERN): More than 3,000 December 6 calls were sold, mostly for $0.65. Volume was below open interest, which suggests a trader is taking profits after a big run in the name. GERN fell 1.98 percent to $4.95.

Cemex (CX): More than 7,000 December 10 calls trade in the cement maker. They were initially purchased in bullish trades, followed by selling. CX fell 0.63 percent to $10.31.

Blackstone Group (BX): A block of 3,000 November 25 puts was sold for $0.03 against open interest and an equal number of December 25 puts was bought for $0.47. That suggests a protective position in the private-equity firm was closed and rolled forward in time. BX fell 1.39 percent to $26.25.
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