Largest option buying in equities so far

optionMONSTER

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.

Micron (MU): More than 18,000 October 14 calls were purchased for $1.37 as investors look for a bounce in the chip maker. MU fell 3.67 percent to $13.39.

ARM Holdings (ARMH): Some 16,734 July 35 puts were bought for $1.80 and 20,734 July 37 puts were sold for $2.90. Volume was below open interest in the 37s, which suggests an existing position was closed and rolled to the lower strike, resulting in a credit of $3 million. ARMH fell 0.47 percent to $35. (See related story )

Chesapeake Energy (CHK): Volume surged in the July 20 puts and the July 19 puts, but volume was below open interest at both strikes. CHK fell 4.15 percent to $19.38.

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