Largest option buying in equities so far

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.

Zynga (ZNGA): Some 15,000 September 3.50 calls were sold for $0.43 and an equal number of September 4 calls were bought for $0.36 but volume was below open interest. That suggests an existing short position was rolled down, resulting in a credit of $0.07, as the investor lowers their upside target on the gaming stock. ZNGA dropped 4.06 percent to $2.96.

Dell (DELL): Large blocks traded in the August 14 calls and the August 15 calls, but volume was below open interest in both. DELL is down 0.07 percent to $13.82.

Genworth (GNW): Some 11,095 June 4 puts and June 8 calls were bought for $0.05 and $1.05, respectively. Volume was below open interest in both, indicating that a short strangle was closed. GNW fell 1.96 percent to $8.51.

Bank of America (BAC): A block of 10,000 puts were bought at the 11.50 strike, expiring two weeks from now on March 8, for $0.27. The trade reflects a belief the shares will push lower in the near term. BAC fell 2.46 percent to $11.51.

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