BX Options History — October 2018

In October 2018, BX traded between $30.48 and $39.06. ATM implied volatility averaged 28.1%, placing in the 45.7% IV rank vs the trailing year. The 30-day expected move averaged 8.2%. IV traded below realized volatility by 6.1% (HV 20d: 34.3%). Max pain ranged from $35.00 to $39.00. Net GEX was positive for 22 of 23 trading days. Term structure was in contango for 6 of 23 days. Put/call ratio averaged 1.13.

Notable Days

2018-10-25: Highest Volume — 53,887 contracts
2018-10-10: Largest IV spike — 16.8% change
2018-10-11: Highest IV Rank — 70.6%
2018-10-29: Largest Expected Move — 12.1%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$35.08	$30.48	$39.06	$38.69	$32.68
Max Pain	$37.07	$35.00	$39.00	$37.00	$35.00
ATM IV	28.1%	23.3%	35.2%	23.4%	31.3%
Expected Move	8.2%	6.3%	12.1%	6.3%	9.7%
HV 20d	34.3%	27.9%	43.0%	27.9%	43.0%
HV 60d	25.7%	20.2%	31.9%	20.4%	31.9%
IV Rank	45.7%	28.3%	70.6%	29.0%	55.7%
IV Percentile	89.2%	69.4%	99.6%	73.0%	95.6%
Term Structure	-0.7%	-8.0%	1.8%	-0.8%	-0.7%
VWIV	29.5%	22.1%	38.4%	22.1%	38.4%
Skew 25d	5.4%	2.6%	22.7%	3.0%	5.1%
Skew 10d	11.7%	4.9%	41.0%	5.9%	9.0%
Call IV 25d	26.8%	21.2%	34.9%	21.5%	29.1%
Put IV 25d	32.2%	24.6%	57.5%	24.6%	34.3%
Bid-Ask Spread %	15.49	6.57	30.38	10.70	10.81
Gamma HHI	0.20	0.14	0.27	0.27	0.16
Net GEX	7.4M	-1.4M	16.5M	15.6M	3.9M
Net DEX	-213.4M	-555.3M	43.5M	-529.9M	-78.2M
Net VEX	-2.7M	-3.0M	-2.3M	-3.0M	-2.6M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	1.13	0.25	2.63	0.79	1.41
Total Volume	25,409.478	13,546	53,887	15,658	24,660
Total OI	424,529.435	396,692	462,698	396,692	428,440

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
2018-10-01	$38.69	$37.00	23.4%	6.3%	27.9%	29.0%	22.1%	3.0%	-0.8%	15.6M	-529.9M	-3.0M	0.79	10.70	N/A	N/A	8,753	6,905	261,800	134,892
2018-10-02	$38.52	$37.00	23.3%	6.3%	28.0%	28.3%	22.9%	3.8%	-0.7%	14.9M	-517.2M	-2.9M	0.49	9.20	N/A	N/A	16,295	7,972	262,758	136,249
2018-10-03	$39.06	$37.00	23.9%	6.4%	27.9%	30.8%	22.8%	3.1%	-1.6%	16.5M	-555.3M	-2.8M	0.61	6.57	N/A	N/A	12,630	7,718	260,213	137,223
2018-10-04	$37.55	$39.00	25.8%	6.9%	29.0%	37.7%	25.9%	2.6%	-1.2%	11.4M	-396.6M	-2.9M	1.64	14.85	N/A	N/A	10,669	17,517	260,953	138,565
2018-10-05	$37.24	$39.00	25.2%	7.1%	29.2%	35.4%	26.1%	4.3%	-0.1%	12.8M	-361.7M	-2.9M	2.44	10.79	N/A	N/A	8,603	21,014	263,813	141,643
2018-10-08	$37.27	$39.00	24.6%	7.3%	28.6%	33.2%	27.2%	4.4%	1.8%	11.9M	-371.5M	-2.9M	0.94	9.89	N/A	N/A	6,995	6,551	260,380	147,921
2018-10-09	$37.14	$39.00	25.7%	7.1%	28.4%	37.2%	27.2%	4.6%	-0.7%	11.8M	-363.5M	-2.8M	0.71	9.14	N/A	N/A	10,098	7,137	261,671	148,189
2018-10-10	$34.67	$39.00	30.0%	8.5%	37.9%	53.0%	30.7%	4.1%	-0.8%	6.0M	-164.5M	-2.7M	1.38	13.46	N/A	N/A	16,615	22,994	263,980	148,587
2018-10-11	$34.56	$38.00	34.8%	9.0%	37.9%	70.6%	31.7%	22.7%	-8.0%	6.0M	-158.2M	-2.8M	1.08	22.47	N/A	N/A	20,865	22,638	270,619	161,568
2018-10-12	$34.82	$37.00	29.8%	8.9%	36.4%	52.0%	31.8%	4.4%	1.4%	6.6M	-175.4M	-2.9M	2.63	14.10	N/A	N/A	7,880	20,716	275,367	167,505
2018-10-15	$35.29	$37.00	30.8%	8.6%	36.8%	55.9%	30.2%	2.7%	0.0%	7.4M	-221.2M	-2.9M	2.05	29.63	N/A	N/A	10,195	20,933	270,739	163,183
2018-10-16	$36.09	$37.00	26.6%	7.6%	37.4%	40.6%	30.3%	5.2%	-1.2%	9.8M	-281.6M	-2.9M	1.39	14.88	N/A	N/A	9,392	13,061	273,061	164,716
2018-10-17	$36.06	$37.00	26.7%	7.7%	37.4%	40.9%	26.4%	4.4%	-0.9%	9.7M	-293.1M	-2.9M	0.86	17.05	N/A	N/A	17,062	14,594	274,706	171,165
2018-10-18	$35.21	$37.00	27.5%	8.0%	38.0%	43.8%	27.6%	5.6%	-1.6%	5.6M	-172.2M	-2.8M	0.99	13.01	N/A	N/A	11,154	10,996	282,192	179,554
2018-10-19	$34.69	$37.00	26.2%	7.6%	32.9%	39.1%	27.3%	5.4%	-0.1%	5.6M	-124.8M	-2.7M	1.48	20.10	N/A	N/A	8,051	11,933	283,528	179,170
2018-10-22	$34.42	$36.00	24.9%	7.4%	32.7%	34.5%	26.5%	4.7%	0.1%	4.8M	-129.4M	-2.6M	0.71	11.20	N/A	N/A	9,323	6,589	255,516	164,219
2018-10-23	$33.70	$36.00	27.9%	8.3%	32.8%	45.2%	31.1%	5.3%	-1.0%	4.3M	-75.9M	-2.5M	0.75	25.50	N/A	N/A	10,512	7,836	257,979	165,925
2018-10-24	$32.35	$36.00	30.7%	9.4%	34.9%	53.3%	34.2%	5.5%	-0.3%	488.6K	16.7M	-2.4M	1.05	23.34	N/A	N/A	9,531	9,972	259,345	167,970
2018-10-25	$32.81	$36.00	28.7%	8.6%	35.7%	45.7%	31.5%	4.8%	0.2%	1.0M	-1.7M	-2.5M	0.25	11.31	N/A	N/A	43,102	10,785	261,494	172,516
2018-10-26	$31.86	$36.00	31.6%	9.8%	36.4%	56.8%	31.6%	6.9%	-0.4%	-1.4M	12.0M	-2.5M	0.36	17.37	N/A	N/A	19,275	6,906	267,198	172,561
2018-10-29	$30.48	$36.00	35.2%	12.1%	37.3%	70.5%	37.5%	6.8%	0.1%	2.7M	43.5M	-2.3M	0.92	30.38	N/A	N/A	8,866	8,157	262,262	159,230
2018-10-30	$31.64	$35.50	32.8%	10.3%	41.2%	61.3%	38.3%	5.0%	-0.6%	3.0M	-7.9M	-2.4M	1.02	10.45	N/A	N/A	10,397	10,571	262,657	160,955
2018-10-31	$32.68	$35.00	31.3%	9.7%	43.0%	55.7%	38.4%	5.1%	-0.7%	3.9M	-78.2M	-2.6M	1.41	10.81	N/A	N/A	10,215	14,445	265,046	163,394