BX Options History — December 2018

In December 2018, BX traded between $27.80 and $34.89. ATM implied volatility averaged 37.7%, placing in the 78.0% IV rank vs the trailing year. The 30-day expected move averaged 11.1%. IV traded below realized volatility by 2.8% (HV 20d: 40.5%). Max pain ranged from $31.00 to $34.00. Net GEX was positive for 11 of 20 trading days. Term structure was in contango for 9 of 20 days. Put/call ratio averaged 1.28.

Notable Days

2018-12-11: Highest Volume — 128,243 contracts
2018-12-04: Largest IV spike — 20.2% change
2018-12-24: Highest IV Rank — 100.0%
2018-12-24: Largest Expected Move — 13.9%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$30.37	$27.80	$34.89	$34.89	$29.88
Max Pain	$31.60	$31.00	$34.00	$34.00	$31.00
ATM IV	37.7%	25.9%	45.5%	25.9%	36.5%
Expected Move	11.1%	7.9%	13.9%	7.9%	11.6%
HV 20d	40.5%	35.7%	42.7%	36.2%	40.7%
HV 60d	38.7%	36.5%	40.2%	36.5%	39.4%
IV Rank	78.0%	35.3%	100.0%	35.3%	68.9%
IV Percentile	96.9%	74.2%	100.0%	74.2%	95.2%
Term Structure	-0.3%	-5.5%	5.8%	1.0%	5.8%
VWIV	39.9%	27.0%	49.0%	27.0%	43.4%
Skew 25d	6.0%	-0.3%	8.1%	4.0%	7.3%
Skew 10d	14.8%	-12.0%	32.7%	7.4%	32.7%
Call IV 25d	36.6%	24.8%	49.3%	24.8%	36.0%
Put IV 25d	42.6%	28.9%	50.8%	28.9%	43.3%
Bid-Ask Spread %	39.04	17.03	50.58	37.53	17.03
Gamma HHI	0.13	0.10	0.23	0.19	0.11
Net GEX	976.8K	-8.3M	14.7M	14.7M	325.3K
Net DEX	11.4M	-307.2M	191.7M	-307.2M	21.4M
Net VEX	-2.2M	-2.6M	-1.8M	-2.6M	-2.0M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	1.28	0.06	4.02	0.06	0.68
Total Volume	27,977.3	10,970	128,243	53,552	12,576
Total OI	463,420.65	415,573	493,552	447,228	422,243

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
2018-12-03	$34.89	$34.00	25.9%	7.9%	36.2%	35.3%	27.0%	4.0%	1.0%	14.7M	-307.2M	-2.6M	0.06	37.53	N/A	N/A	50,565	2,987	283,779	163,449
2018-12-04	$32.71	$34.00	31.2%	10.1%	42.7%	55.2%	36.3%	5.4%	1.2%	8.0M	-130.2M	-2.5M	0.44	40.64	N/A	N/A	17,743	7,884	305,649	163,796
2018-12-05	$32.63	$34.00	30.8%	10.1%	42.5%	54.0%	37.1%	4.2%	1.0%	7.5M	-123.2M	-2.5M	0.43	44.96	N/A	N/A	18,481	7,980	305,649	163,796
2018-12-06	$32.07	$32.00	32.8%	9.6%	42.0%	61.3%	34.5%	6.5%	0.3%	4.2M	-68.2M	-2.4M	1.04	43.42	N/A	N/A	19,753	20,566	309,846	165,836
2018-12-07	$31.66	$32.00	33.4%	9.7%	41.6%	63.7%	37.8%	5.6%	1.0%	4.3M	-53.2M	-2.4M	1.18	50.58	N/A	N/A	5,036	5,934	321,523	172,029
2018-12-10	$30.54	$32.00	38.6%	10.9%	41.2%	83.7%	40.7%	7.2%	-0.9%	1.8M	6.1M	-2.3M	1.69	43.81	N/A	N/A	12,502	21,133	305,791	168,615
2018-12-11	$30.64	$31.00	38.5%	10.7%	40.8%	83.0%	40.0%	6.0%	-0.8%	2.0M	-2.9M	-2.3M	0.17	37.88	N/A	N/A	109,680	18,563	309,774	180,356
2018-12-12	$30.56	$31.00	35.9%	9.9%	40.6%	73.2%	35.2%	6.4%	-1.2%	-100.1K	18.6M	-2.1M	2.87	49.86	N/A	N/A	5,360	15,405	283,371	185,681
2018-12-13	$30.27	$31.00	34.5%	10.1%	40.4%	67.8%	35.5%	6.2%	0.7%	-1.9M	46.3M	-2.1M	1.20	39.86	N/A	N/A	7,640	9,161	284,832	185,787
2018-12-14	$29.82	$31.00	36.1%	10.6%	40.3%	74.1%	38.3%	6.9%	0.9%	-2.0M	70.6M	-2.0M	4.02	39.86	N/A	N/A	5,672	22,821	285,059	186,380
2018-12-17	$28.74	$31.00	41.0%	11.6%	41.9%	92.5%	40.6%	6.5%	-0.2%	-3.6M	127.8M	-1.9M	1.67	35.43	N/A	N/A	10,287	17,145	280,377	186,979
2018-12-18	$28.78	$31.00	39.9%	11.4%	41.4%	88.3%	42.4%	6.6%	-0.2%	-5.5M	131.7M	-2.0M	2.72	40.86	N/A	N/A	5,106	13,882	284,994	197,103
2018-12-19	$27.80	$31.00	39.4%	11.3%	42.3%	86.5%	39.0%	8.1%	-1.8%	-6.2M	191.7M	-1.8M	1.02	46.34	N/A	N/A	9,013	9,181	287,037	199,681
2018-12-20	$27.85	$31.00	42.8%	12.4%	39.2%	99.5%	44.8%	8.1%	-2.2%	-4.9M	179.2M	-1.9M	1.43	41.55	N/A	N/A	7,499	10,690	289,488	198,213
2018-12-21	$28.47	$31.00	42.0%	12.1%	38.5%	96.6%	42.7%	7.2%	-0.2%	-8.3M	138.4M	-2.0M	1.05	39.52	N/A	N/A	8,301	8,749	291,484	199,484
2018-12-24	$29.01	$31.00	45.5%	13.9%	35.7%	100.0%	49.0%	-0.3%	1.0%	-472.5K	57.6M	-1.9M	0.88	43.08	N/A	N/A	6,824	5,979	249,780	165,793
2018-12-26	$30.52	$31.00	44.7%	13.3%	41.1%	97.1%	47.4%	5.0%	-4.0%	2.7M	-37.5M	-2.2M	1.12	37.78	N/A	N/A	9,291	10,386	252,109	166,562
2018-12-27	$30.36	$31.00	44.7%	12.9%	40.7%	97.4%	47.3%	6.5%	-5.5%	3.0M	-24.7M	-2.2M	1.18	30.21	N/A	N/A	6,788	7,983	256,196	174,499
2018-12-28	$30.15	$31.00	40.4%	12.0%	40.7%	82.3%	39.5%	7.2%	-1.2%	4.2M	-14.5M	-2.1M	0.68	20.51	N/A	N/A	8,950	6,050	258,554	176,839
2018-12-31	$29.88	$31.00	36.5%	11.6%	40.7%	68.9%	43.4%	7.3%	5.8%	325.3K	21.4M	-2.0M	0.68	17.03	N/A	N/A	7,506	5,070	253,129	169,114