Calls							Days until expiration: 10
Symbol & Strike	Last	Chng	%Chng	High	Low	Bid	Ask	Volume	Open Int
XRTX Feb 20 2010 10.00	3.13	-2.27	-42.04	3.13	3.13	3.10	3.40	1	27
XRTX Feb 20 2010 12.50	0.90	—	—	0.90	0.90	0.85	1.10	10	93
XRTX Feb 20 2010 15.00	0.10	-0.10	-50.00	0.10	0.10	0.05	0.15	1	263
XRTX Feb 20 2010 17.50	0.30	0.10	50.00	0.30	0.25	0.05	0.10	17	59
XRTX Feb 20 2010 20.00	—	—	—	—	—	—	0.10	—	—

Puts						Bold and highlighted options are "At the Money"
Symbol & Strike	Last	Chng	%Chng	High	Low	Bid	Ask	Volume	Open Int
XRTX Feb 20 2010 10.00	0.05	-0.10	-66.67	0.05	0.05	0.05	0.15	100	170
XRTX Feb 20 2010 12.50	0.45	0.15	50.00	0.45	0.45	0.15	0.35	1	220
XRTX Feb 20 2010 15.00	2.25	0.85	60.71	2.25	2.25	1.70	1.90	10	1,583
XRTX Feb 20 2010 17.50	2.25	0.30	15.38	2.25	2.25	4.10	4.40	13	64
XRTX Feb 20 2010 20.00	—	—	—	—	—	6.60	6.90	—	—
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