NBIX Options History — May 2018

In May 2018, NBIX traded between $80.44 and $96.47. ATM implied volatility averaged 33.8%, placing in the 21.6% IV rank vs the trailing year. The 30-day expected move averaged 9.7%. IV traded above realized volatility by 2.3% (HV 20d: 31.6%). Max pain ranged from $75.00 to $80.00. Net GEX was positive for 22 of 22 trading days. Term structure was in contango for 16 of 22 days. Put/call ratio averaged 0.86.

Notable Days

2018-05-11: Highest Volume — 6,052 contracts
2018-05-04: Largest IV drop — 24.9% change
2018-05-02: Highest IV Rank — 42.5%
2018-05-02: Largest Expected Move — 12.7%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$89.80	$80.44	$96.47	$83.30	$96.47
Max Pain	$79.55	$75.00	$80.00	$75.00	$80.00
ATM IV	33.8%	29.0%	44.4%	41.8%	30.8%
Expected Move	9.7%	8.3%	12.7%	12.0%	8.8%
HV 20d	31.6%	22.6%	34.5%	34.0%	22.6%
HV 60d	34.5%	33.3%	35.4%	34.4%	33.4%
IV Rank	21.6%	12.1%	42.5%	37.3%	15.6%
IV Percentile	13.5%	4.4%	54.0%	36.1%	7.1%
Term Structure	1.3%	-2.3%	4.3%	-2.3%	0.9%
VWIV	35.2%	26.3%	44.4%	42.8%	26.3%
Skew 25d	4.0%	2.4%	6.3%	5.8%	3.7%
Skew 10d	9.6%	5.1%	14.7%	14.5%	8.2%
Call IV 25d	32.9%	28.9%	44.1%	41.4%	29.6%
Put IV 25d	36.9%	31.9%	47.8%	47.2%	33.3%
Bid-Ask Spread %	27.46	20.94	39.19	30.39	22.88
Gamma HHI	0.26	0.18	0.40	0.21	0.27
Net GEX	3.3M	1.8M	5.1M	2.9M	3.3M
Net DEX	-57.0M	-118.5M	-20.1M	-35.5M	-57.2M
Net VEX	-240.5K	-261.2K	-222.7K	-260.6K	-222.7K
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.86	0.31	2.10	0.47	0.53
Total Volume	2,925.636	1,516	6,052	3,305	2,271
Total OI	26,539.955	18,581	33,559	27,951	20,938

Daily Data (22 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
2018-05-01	$83.30	$75.00	41.8%	12.0%	34.0%	37.3%	42.8%	5.8%	-2.3%	2.9M	-35.5M	-260.6K	0.47	30.39	N/A	N/A	2,249	1,056	18,522	9,429
2018-05-02	$80.44	$75.00	44.4%	12.7%	34.5%	42.5%	44.4%	3.7%	-1.3%	2.5M	-26.4M	-261.2K	0.77	32.19	N/A	N/A	2,279	1,759	19,391	9,440
2018-05-03	$80.50	$80.00	43.0%	11.4%	34.5%	39.7%	40.7%	3.6%	1.0%	2.3M	-20.1M	-258.0K	0.91	25.45	N/A	N/A	2,097	1,908	19,384	10,213
2018-05-04	$83.02	$80.00	32.3%	10.4%	33.5%	18.5%	39.7%	5.1%	2.2%	3.2M	-29.2M	-248.4K	1.72	23.38	N/A	N/A	1,080	1,857	19,011	10,199
2018-05-07	$83.67	$80.00	38.4%	10.7%	32.9%	30.6%	41.8%	5.4%	2.3%	3.3M	-32.4M	-246.1K	2.10	32.72	N/A	N/A	880	1,852	19,032	10,268
2018-05-08	$83.16	$80.00	36.9%	10.4%	32.3%	27.7%	39.4%	6.3%	1.9%	3.2M	-30.4M	-236.2K	0.51	23.95	N/A	N/A	2,071	1,046	19,039	10,292
2018-05-09	$86.36	$80.00	34.3%	9.8%	33.9%	22.4%	39.3%	5.4%	2.2%	4.0M	-53.1M	-237.7K	1.75	39.19	N/A	N/A	1,164	2,037	18,422	10,319
2018-05-10	$87.71	$80.00	32.1%	9.2%	33.7%	18.1%	36.6%	4.9%	3.3%	4.1M	-61.2M	-246.8K	1.88	20.94	N/A	N/A	1,085	2,037	18,276	11,304
2018-05-11	$90.46	$80.00	31.9%	9.1%	34.1%	17.7%	31.7%	2.4%	4.3%	4.4M	-79.6M	-237.8K	0.48	34.66	N/A	N/A	4,090	1,962	18,312	11,333
2018-05-14	$90.92	$80.00	33.1%	9.5%	34.0%	20.1%	33.5%	2.5%	2.3%	5.1M	-93.1M	-249.5K	0.49	29.49	N/A	N/A	2,078	1,010	20,198	11,353
2018-05-15	$92.65	$80.00	31.9%	9.1%	33.9%	17.6%	34.9%	4.6%	3.6%	4.9M	-108.2M	-241.3K	0.75	28.08	N/A	N/A	1,260	950	20,357	11,370
2018-05-16	$94.00	$80.00	32.1%	9.2%	32.5%	18.1%	31.7%	3.8%	3.3%	5.1M	-118.5M	-239.2K	0.31	25.33	N/A	N/A	3,214	984	20,748	11,384
2018-05-17	$92.55	$80.00	31.9%	9.1%	32.3%	17.7%	33.6%	3.5%	2.0%	4.8M	-109.2M	-242.6K	0.96	23.16	N/A	N/A	1,098	1,050	22,089	11,445
2018-05-18	$93.13	$80.00	32.7%	9.4%	32.1%	19.3%	33.3%	3.2%	0.9%	1.8M	-111.0M	-238.1K	0.34	27.87	N/A	N/A	3,257	1,109	22,071	11,488
2018-05-21	$91.71	$80.00	33.3%	9.6%	32.9%	20.5%	34.4%	3.6%	-1.0%	1.9M	-31.8M	-232.2K	0.96	23.93	N/A	N/A	855	825	10,996	7,585
2018-05-22	$93.29	$80.00	30.3%	8.7%	29.7%	14.7%	29.2%	3.7%	-0.0%	2.0M	-38.6M	-227.5K	0.41	28.03	N/A	N/A	1,826	754	11,032	7,636
2018-05-23	$93.80	$80.00	31.3%	9.0%	29.0%	16.6%	32.9%	3.0%	-0.1%	2.3M	-40.8M	-240.7K	0.86	30.43	N/A	N/A	887	764	12,011	7,738
2018-05-24	$94.64	$80.00	31.0%	8.9%	28.6%	16.0%	31.0%	4.0%	-0.4%	2.5M	-43.9M	-235.7K	0.77	21.81	N/A	N/A	901	691	12,119	7,755
2018-05-25	$94.16	$80.00	29.0%	8.3%	28.2%	12.1%	29.3%	3.0%	1.6%	2.5M	-41.0M	-234.5K	0.44	21.07	N/A	N/A	1,582	689	12,139	7,758
2018-05-29	$94.20	$80.00	31.4%	9.0%	28.0%	16.8%	29.3%	3.5%	1.8%	2.9M	-43.1M	-228.1K	0.87	22.18	N/A	N/A	809	707	12,956	7,758
2018-05-30	$95.48	$80.00	30.6%	8.8%	27.4%	15.1%	38.5%	3.4%	0.8%	3.2M	-50.0M	-226.7K	0.54	37.00	N/A	N/A	1,482	802	12,976	7,793
2018-05-31	$96.47	$80.00	30.8%	8.8%	22.6%	15.6%	26.3%	3.7%	0.9%	3.3M	-57.2M	-222.7K	0.53	22.88	N/A	N/A	1,480	791	13,057	7,881