Listed below are options with unusually high volume for the most recent 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
DELL	48,418	12,837	3.77
IYR	44,788	13,497	3.32
CTIC	37,499	11,306	3.32
ERTS	17,706	3,451	5.13
MDVN	16,457	7,327	2.25
CVS	15,786	6,349	2.49
TCK	14,211	5,446	2.61
PARD	10,715	2,826	3.79
XLB	7,843	3,726	2.10
EWW	6,916	1,637	4.22
VECO	6,620	1,380	4.80
SHAW	5,659	2,360	2.40
CMCSK	5,114	1,270	4.03
NTES	4,159	1,918	2.17
RVBD	4,086	901	4.53
NXY	3,798	807	4.71
ARG	3,791	1,409	2.69
SAP	3,537	1,744	2.03
AMAG	3,219	1,353	2.38
SCHN	3,190	1,106	2.88
JCG	3,047	1,412	2.16
BG	3,010	1,488	2.02
GIL	2,844	208	13.67
ARIA	2,734	401	6.82
NBL	2,285	730	3.13
1 2 3 4