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.
Pfizer (PFE): An investor sold about 35,000 September 25 calls for $0.12 and bought an equal number of October 25 calls for $0.27. Volume was below open interest in September, indicating that an existing position was rolled from one contract to the other. The trade gives the investor an additional month of upside exposure to the pharma giant. PFE rose 0.50 percent to $24.10.
Williams (WMB): An investor bought 5,906 August calls for $3.10 against open interest. He or she also sold equal-sized blocks in the November 25 puts for $0.12 and the November 30 calls for $2.74, indicating that an existing short strangle in August was closed and rolled forward in time. WMB rose 0.34 percent to $32.26.
Facebook (FB): Almost 16,000 December 19 puts were bought for $2.12 to $2.21 as an investor positioned for downside in the shares. FB rose 1.91 percent to $20.77.
Dow Chemical (DOW): Some 5,800 August 30 puts were bought for $0.41. Volume was below open interest, so the investor may have bought back contracts he or she had previously sold short. DOW fell 0.64 percent to $29.49.
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