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
COP	306,564	21,078	14.54
SO	278,086	14,183	19.61
MSFT	265,455	87,300	3.04
CPNO	53,908	2,721	19.81
MWE	52,917	2,829	18.71
NVDA	50,508	21,916	2.30
SYMC	41,425	5,190	7.98
RRC	38,664	4,083	9.47
S	33,177	14,978	2.22
MOS	32,343	13,701	2.36
PAYX	30,079	1,703	17.66
VLO	21,693	5,748	3.77
ESRX	21,235	4,665	4.55
POT	20,207	8,364	2.42
GT	15,767	1,259	12.52
BRCM	14,594	4,715	3.10
CVS	12,590	2,849	4.42
WAT	11,991	1,190	10.08
APL	11,450	1,260	9.09
BRCD	11,052	2,267	4.88
TYC	10,558	1,503	7.02
MEE	10,420	3,993	2.61
CQP	7,854	538	14.60
SLM	7,821	1,366	5.73
GMCR	7,401	2,992	2.47
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