NBIX Options History — August 2018

In August 2018, NBIX traded between $112.97 and $123.10. ATM implied volatility averaged 33.5%, placing in the 28.6% IV rank vs the trailing year. The 30-day expected move averaged 9.5%. IV traded below realized volatility by 16.3% (HV 20d: 49.8%). Max pain ranged from $95.00 to $110.00. Net GEX was positive for 23 of 23 trading days. Term structure was in contango for 20 of 23 days. Put/call ratio averaged 1.30.

Notable Days

2018-08-01: Highest Volume — 4,769 contracts
2018-08-13: Largest IV spike — 26.0% change
2018-08-13: Highest IV Rank — 49.0%
2018-08-16: Largest Expected Move — 10.1%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$117.29	$112.97	$123.10	$112.97	$123.10
Max Pain	$108.04	$95.00	$110.00	$95.00	$110.00
ATM IV	33.5%	29.2%	40.9%	35.1%	29.2%
Expected Move	9.5%	8.4%	10.1%	10.1%	8.4%
HV 20d	49.8%	19.0%	56.1%	55.4%	19.0%
HV 60d	36.1%	35.8%	36.7%	36.6%	36.0%
IV Rank	28.6%	17.1%	49.0%	29.9%	17.1%
IV Percentile	17.5%	5.6%	45.6%	20.6%	5.6%
Term Structure	1.3%	-1.5%	3.0%	-1.5%	3.0%
VWIV	33.2%	29.9%	35.8%	35.3%	29.9%
Skew 25d	2.2%	0.3%	5.5%	1.0%	2.9%
Skew 10d	3.8%	1.8%	7.9%	1.8%	4.0%
Call IV 25d	32.4%	28.3%	35.6%	35.6%	28.3%
Put IV 25d	34.6%	31.1%	37.4%	36.6%	31.1%
Bid-Ask Spread %	24.27	17.28	35.83	21.57	17.28
Gamma HHI	0.33	0.27	0.40	0.36	0.35
Net GEX	2.3M	1.3M	3.3M	2.5M	2.1M
Net DEX	-73.0M	-113.7M	-26.7M	-82.3M	-50.7M
Net VEX	-173.1K	-214.7K	-143.6K	-143.6K	-207.8K
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	1.30	0.31	4.36	0.31	2.36
Total Volume	2,043	1,062	4,769	4,769	1,517
Total OI	18,948.087	11,823	24,455	20,573	15,266

Daily Data (23 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
2018-08-01	$112.97	$95.00	35.1%	10.1%	55.4%	29.9%	35.3%	1.0%	-1.5%	2.5M	-82.3M	-143.6K	0.31	21.57	N/A	N/A	3,634	1,135	11,220	9,353
2018-08-02	$116.06	$95.00	34.1%	9.8%	55.8%	28.6%	32.7%	5.5%	-0.8%	2.6M	-93.9M	-167.7K	0.49	35.83	N/A	N/A	1,531	745	12,366	9,738
2018-08-03	$115.99	$95.00	33.2%	9.5%	55.1%	26.8%	33.4%	2.1%	-1.2%	2.5M	-93.4M	-164.7K	0.90	22.74	N/A	N/A	765	685	12,175	9,862
2018-08-06	$115.40	$110.00	35.6%	9.7%	55.3%	34.5%	34.3%	2.6%	2.4%	2.6M	-93.6M	-161.2K	0.32	28.09	N/A	N/A	2,205	707	12,296	9,914
2018-08-07	$117.20	$110.00	34.2%	9.6%	55.3%	30.6%	33.7%	2.1%	1.8%	2.6M	-101.5M	-157.3K	0.78	20.07	N/A	N/A	1,018	794	12,772	9,909
2018-08-08	$116.91	$110.00	34.6%	9.7%	55.1%	31.7%	33.7%	2.4%	1.0%	2.7M	-101.7M	-163.5K	0.93	26.45	N/A	N/A	830	771	12,979	10,099
2018-08-09	$119.49	$110.00	32.2%	9.7%	55.4%	25.1%	33.7%	1.8%	1.4%	2.4M	-113.7M	-156.3K	0.66	26.10	N/A	N/A	1,414	940	13,097	10,153
2018-08-10	$118.24	$110.00	32.5%	9.4%	55.7%	26.0%	33.0%	0.3%	2.8%	2.7M	-111.4M	-172.3K	1.10	22.72	N/A	N/A	837	924	13,800	10,246
2018-08-13	$116.14	$110.00	40.9%	10.1%	56.1%	49.0%	34.6%	1.6%	1.4%	3.0M	-101.9M	-170.4K	1.10	24.06	N/A	N/A	823	905	13,879	10,307
2018-08-14	$116.18	$110.00	39.6%	9.9%	55.4%	45.3%	34.9%	2.1%	2.1%	2.9M	-103.1M	-166.2K	0.96	20.30	N/A	N/A	764	737	13,884	10,298
2018-08-15	$113.79	$110.00	34.8%	10.0%	55.5%	32.3%	35.8%	1.8%	2.1%	3.2M	-93.7M	-164.8K	1.04	26.18	N/A	N/A	693	719	13,947	10,309
2018-08-16	$113.55	$110.00	35.3%	10.1%	55.5%	33.5%	35.6%	3.4%	2.0%	3.3M	-93.5M	-160.2K	0.78	28.49	N/A	N/A	946	734	13,963	10,304
2018-08-17	$114.82	$110.00	34.0%	9.7%	55.5%	30.0%	34.3%	2.3%	1.6%	2.8M	-100.1M	-161.5K	0.59	18.73	N/A	N/A	1,650	981	14,049	10,406
2018-08-20	$113.89	$110.00	33.4%	9.6%	55.6%	28.3%	32.9%	3.2%	0.7%	1.3M	-26.7M	-158.8K	1.29	22.76	N/A	N/A	508	656	6,647	5,176
2018-08-21	$114.92	$110.00	33.1%	9.5%	55.4%	27.6%	33.9%	2.0%	1.2%	1.3M	-27.7M	-169.7K	1.57	26.15	N/A	N/A	413	649	6,685	5,397
2018-08-22	$117.25	$110.00	32.3%	9.3%	55.2%	25.5%	32.0%	2.6%	0.6%	1.6M	-33.0M	-166.0K	2.13	19.92	N/A	N/A	463	988	6,714	5,416
2018-08-23	$117.53	$110.00	30.9%	8.8%	55.2%	21.5%	32.3%	1.5%	1.2%	1.6M	-33.9M	-179.4K	1.92	30.60	N/A	N/A	489	938	6,813	5,766
2018-08-24	$118.55	$110.00	31.0%	8.9%	55.1%	22.0%	32.0%	1.6%	2.6%	1.6M	-36.5M	-185.4K	0.82	18.59	N/A	N/A	1,198	977	6,924	5,812
2018-08-27	$120.84	$110.00	32.4%	9.3%	44.7%	25.8%	32.5%	1.8%	1.0%	2.0M	-46.6M	-189.9K	1.16	29.54	N/A	N/A	780	908	7,706	6,040
2018-08-28	$120.68	$110.00	30.7%	8.8%	44.8%	21.1%	31.3%	1.8%	2.0%	2.2M	-46.1M	-188.4K	2.05	26.57	N/A	N/A	1,079	2,207	7,726	6,070
2018-08-29	$121.90	$110.00	31.1%	8.9%	20.9%	22.2%	31.2%	3.1%	0.5%	2.0M	-46.3M	-214.7K	2.33	17.31	N/A	N/A	861	2,009	7,829	7,293
2018-08-30	$122.17	$110.00	31.3%	9.0%	19.0%	22.8%	31.4%	1.9%	1.1%	2.0M	-48.1M	-211.6K	4.36	28.16	N/A	N/A	459	2,003	7,892	7,309
2018-08-31	$123.10	$110.00	29.2%	8.4%	19.0%	17.1%	29.9%	2.9%	3.0%	2.1M	-50.7M	-207.8K	2.36	17.28	N/A	N/A	452	1,065	7,927	7,339