Listed below are options with unusually high volume for the previous trading session compared with average daily volume. The relative level of activity is expressed in the daily volume ratio, which represents the current day's volume divided by the average daily volume for the past month.

Symbol	Call Volume	Average Call Volume	Daily Volume Ratio
GENZ	41,541	17,599	2.36
ARNA	40,877	12,093	3.38
FIS	29,962	11,525	2.60
LPX	29,451	4,017	7.33
POT	23,103	11,487	2.01
FSLR	22,980	10,008	2.30
TLT	21,050	6,554	3.21
NOK	16,114	7,438	2.17
GNW	12,424	5,165	2.41
WYNN	12,334	5,470	2.25
AMGN	11,413	5,325	2.14
MET	11,339	4,960	2.29
DE	11,286	4,717	2.39
RRC	10,944	4,913	2.23
WMB	10,538	3,649	2.89
CSTR	8,011	2,237	3.58
JDSU	7,694	1,574	4.89
CELG	7,378	3,093	2.39
BRCD	7,244	2,606	2.78
KGC	6,734	2,278	2.96
PWER	6,210	1,009	6.15
XME	6,010	2,648	2.27
ACI	5,983	2,640	2.27
WCRX	5,574	437	12.76
PTV	5,511	1,544	3.57
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