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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.

JP Morgan Chase (JPM): More than 8,000 June 48 calls traded, mostly for $2.69 to $2.74, but volume was below open interest at the strike. JPM fell 0.39 percent to $48.72.

Seagate Technology (STX): A block of 7,500 April 35 calls were bought for $0.69 and an equal number of April 38 calls were sold for $0.22. Known as a bullish call spread, the trade cost $0.47 and will earn a maximum profit of 538 percent on a move to $38. STX fell 0.91 percent to $32.03. (See related story )

SandRidge Energy (SD): Volume surged in the April 6 puts and the April 7 puts as an existing bearish spread was closed. SD rose 3.14 percent to $5.58.

Agilent Technologies (:A): An investor bought 2,500 May 39 puts for $0.96, bracing for downside in the share price. A rose 0.21 percent to $42.02.

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