As of today's market close, here are the top 10 names showing
unusual option activity on tradeMONSTER's LiveAction data system.
National Semiconductor (NSM): Option volume 3,040 percent above
average. An investor bought some 10,000 September 24 calls for
$0.85, looking for upside. NSM fell 0.04 percent to $24.54.
Mindray Medical (MR): Option volume 2,646 percent above average.
Roughly 4,000 August 25 calls were sold for $1.65 to $1.95, and
about 5,900 September 30 calls were bought for $1.05 to $1.45 as an
investor sought more time for upside. MR fell 6.25 percent to
Assuarant (AIZ): Option volume 1,869 percent above average. An
investor rolled 1,875 September 32.50 calls to the September 30
strike at a net cost of $2.10, hoping for upside. AIZ fell 2.49
percent to $31.33.
Affymax (AFFY): Option volume 1,687 percent above average. An
investor sold 2,250 October 5 calls for $0.70 and $0.65, calling a
top in the drug developer. AFFY fell 10 percent to $4.67.
Market Vectors Russia ETF (RSX): Option volume 1,600 percent above
average. Investors sold the September 32 puts for $2.05 and bought
the August 29 puts in separate transactions. RSX fell 12 percent to
Rounding out the rest of the top 10 are:
(Chart courtesy of tradeMONSTER)
- Janus Capital (JNS): Option volume 1,510 percent above
- Endo Pharmaceuticals (ENDP): Option volume 1,387 percent
- ProShares Short S&P 500 ETF (SH): Option volume 1,376
percent above average.
- Savient Pharmaceuticals (SVNT): Option volume 1,278 percent
- Photronics (PLAB): Option volume 1,089 percent above
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