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Largest option buying in equities so far

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.

MGM Resorts International (MGM): More than 5,000 January 20 calls were bought for $0.40 as investors wager on a rally in the casino stock. MGM fell 3.36 percent to $14.51.

ExactTarget (ET): More than 5,000 July 30 puts were bought, mostly for $0.10, as investors positioned for downside in the share price. ET fell 0.06 percent to $33.67.

Groupon (GRPN): Some 6,250 January 3.50 puts were bought for $0.15 but volume was below open interest at the strike. GRPN fell 0.14 percent to $6.99.

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