OPK Options History — July 2011

In July 2011, OPK traded between $3.69 and $4.43. ATM implied volatility averaged 72.5%, placing in the 5.0% IV rank vs the trailing year. The 30-day expected move averaged 15.1%. IV traded above realized volatility by 37.2% (HV 20d: 35.3%). Max pain ranged from $2.50 to $5.00. Net GEX was positive for 20 of 20 trading days. Term structure was in contango for 17 of 20 days. Put/call ratio averaged 0.29.

Notable Days

2011-07-08: Highest Volume — 378 contracts
2011-07-14: Largest IV drop — 59.0% change
2011-07-27: Highest IV Rank — 10.7%
2011-07-01: Largest Expected Move — 31.8%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$4.16	$3.69	$4.43	$3.72	$4.35
Max Pain	$3.63	$2.50	$5.00	$2.50	$5.00
ATM IV	72.5%	37.5%	133.3%	110.9%	45.9%
Expected Move	15.1%	10.8%	31.8%	31.8%	13.2%
HV 20d	35.3%	31.3%	38.6%	34.6%	38.6%
HV 60d	33.0%	30.7%	34.8%	30.7%	34.8%
IV Rank	5.0%	0.0%	10.7%	5.6%	5.3%
IV Percentile	4.1%	0.0%	14.8%	3.2%	3.7%
Term Structure	13.9%	-22.1%	32.5%	-10.9%	26.4%
VWIV	46.4%	33.2%	69.3%	47.5%	35.8%
Bid-Ask Spread %	56.24	19.54	110.04	30.50	23.06
Gamma HHI	0.99	0.97	1.00	0.97	1.00
Net GEX	82.6K	51.0K	109.5K	51.9K	101.9K
Net DEX	-1.6M	-2.1M	-1.0M	-1.2M	-2.0M
Net VEX	-9.8K	-11.3K	-8.1K	-9.0K	-10.1K
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.29	0.00	2.13	0.00	0.00
Total Volume	89.2	0	378	20	1
Total OI	18,391	17,969	18,733	17,969	18,719

Daily Data (20 trading days)

Date	Price	Max Pain	ATM IV	Exp Move	HV 20d	IV Rank	VWIV	Skew 25d	Term Str	GEX	DEX	VEX	P/C	Spread %	Call Wall	Put Wall	Call Vol	Put Vol	Call OI	Put OI
2011-07-01	$3.72	$2.50	110.9%	31.8%	34.6%	0.0%	0.0%	0.0%	-10.9%	51.9K	-1.2M	-9.0K	0.00	30.50	N/A	N/A	20	0	16,711	1,258
2011-07-05	$3.69	$2.50	133.3%	21.0%	34.3%	0.0%	0.0%	0.0%	-22.1%	51.0K	-1.1M	-8.7K	0.00	93.86	N/A	N/A	30	0	16,731	1,258
2011-07-06	$3.81	$2.50	108.9%	15.5%	35.9%	0.0%	0.0%	0.0%	12.5%	54.2K	-1.0M	-8.1K	0.30	91.52	N/A	N/A	33	10	16,761	1,258
2011-07-07	$3.96	$2.50	89.9%	14.3%	37.6%	0.0%	0.0%	0.0%	17.7%	61.4K	-1.3M	-9.0K	0.27	91.73	N/A	N/A	115	31	16,791	1,258
2011-07-08	$4.06	$2.50	97.7%	13.6%	36.5%	0.0%	0.0%	0.0%	10.5%	70.1K	-1.2M	-8.8K	0.04	110.04	N/A	N/A	363	15	16,839	1,235
2011-07-11	$4.01	$2.50	92.6%	13.0%	37.1%	0.0%	0.0%	0.0%	18.7%	70.9K	-1.8M	-10.6K	0.28	63.79	N/A	N/A	36	10	17,110	1,226
2011-07-12	$4.00	$2.50	112.1%	14.7%	36.7%	0.0%	0.0%	0.0%	13.6%	67.3K	-1.4M	-8.9K	0.00	66.00	N/A	N/A	0	0	17,146	1,236
2011-07-13	$4.14	$2.50	133.0%	14.1%	37.4%	0.0%	0.0%	0.0%	15.8%	73.6K	-1.5M	-9.1K	2.13	65.23	N/A	N/A	40	85	17,146	1,236
2011-07-14	$4.33	$2.50	54.5%	15.6%	37.1%	0.0%	0.0%	0.0%	18.4%	89.3K	-1.8M	-10.6K	0.20	92.99	N/A	N/A	126	25	17,171	1,306
2011-07-15	$4.30	$2.50	44.0%	12.6%	37.6%	0.0%	47.5%	0.0%	20.6%	87.4K	-2.0M	-11.2K	0.95	90.79	N/A	N/A	105	100	17,173	1,331
2011-07-18	$4.33	$2.50	52.5%	15.0%	33.8%	5.6%	69.3%	0.0%	20.1%	95.7K	-1.6M	-10.2K	0.80	20.84	N/A	N/A	25	20	16,957	1,431
2011-07-19	$4.38	$5.00	50.9%	14.6%	33.2%	4.6%	0.0%	0.0%	26.4%	95.7K	-2.1M	-11.3K	0.00	65.98	N/A	N/A	59	0	16,964	1,451
2011-07-20	$4.34	$5.00	58.6%	16.8%	31.3%	9.7%	0.0%	0.0%	-14.4%	98.9K	-1.6M	-10.0K	0.00	46.67	N/A	N/A	0	0	16,975	1,451
2011-07-21	$4.27	$5.00	37.5%	10.8%	31.5%	0.0%	33.2%	0.0%	21.0%	93.3K	-1.5M	-9.5K	0.04	19.54	N/A	N/A	117	5	16,975	1,451
2011-07-22	$4.40	$5.00	47.4%	13.6%	31.7%	6.3%	0.0%	0.0%	22.3%	103.3K	-2.0M	-10.9K	0.23	21.94	N/A	N/A	111	25	17,063	1,456
2011-07-25	$4.43	$5.00	40.9%	11.7%	31.7%	2.1%	0.0%	0.0%	26.8%	109.5K	-2.1M	-10.9K	0.00	23.28	N/A	N/A	197	0	17,111	1,473
2011-07-26	$4.27	$5.00	41.3%	11.8%	34.2%	2.4%	0.0%	0.0%	14.4%	100.0K	-1.8M	-10.1K	0.00	20.23	N/A	N/A	34	0	17,229	1,473
2011-07-27	$4.11	$5.00	54.5%	15.6%	37.6%	10.7%	0.0%	0.0%	8.6%	87.7K	-1.9M	-10.3K	0.00	65.12	N/A	N/A	6	0	17,254	1,473
2011-07-28	$4.21	$5.00	43.5%	12.5%	38.1%	3.8%	0.0%	0.0%	32.5%	89.1K	-1.7M	-9.5K	0.00	21.69	N/A	N/A	40	0	17,260	1,473
2011-07-29	$4.35	$5.00	45.9%	13.2%	38.6%	5.3%	35.8%	0.0%	26.4%	101.9K	-2.0M	-10.1K	0.00	23.06	N/A	N/A	1	0	17,246	1,473