COST Options History — November 2021

In November 2021, COST traded between $491.56 and $555.51. ATM implied volatility averaged 22.4%, placing in the 53.4% IV rank vs the trailing year. The 30-day expected move averaged 6.6%. IV traded above realized volatility by 6.7% (HV 20d: 15.7%). Max pain ranged from $460.00 to $510.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 6 of 21 days. Put/call ratio averaged 0.63.

Notable Days

2021-11-04: Highest Volume — 73,616 contracts
2021-11-26: Largest IV spike — 14.0% change
2021-11-30: Highest IV Rank — 92.8%
2021-11-30: Largest Expected Move — 8.8%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$523.27	$491.56	$555.51	$491.56	$545.77
Max Pain	$483.10	$460.00	$510.00	$460.00	$510.00
ATM IV	22.4%	17.2%	28.2%	17.6%	28.2%
Expected Move	6.6%	5.1%	8.8%	5.2%	8.8%
HV 20d	15.7%	14.0%	17.3%	14.2%	17.1%
HV 60d	18.2%	17.2%	18.8%	17.2%	18.8%
IV Rank	53.4%	18.7%	92.8%	21.4%	92.8%
IV Percentile	73.5%	30.6%	99.6%	32.5%	99.6%
Term Structure	0.3%	-1.6%	2.5%	1.7%	-0.5%
VWIV	23.8%	18.7%	31.7%	19.1%	31.7%
Skew 25d	1.1%	-0.1%	2.2%	2.2%	1.4%
Skew 10d	2.0%	-1.3%	5.0%	4.1%	3.6%
Call IV 25d	22.5%	17.0%	28.4%	17.2%	28.3%
Put IV 25d	23.7%	19.1%	29.8%	19.4%	29.7%
Bid-Ask Spread %	46.36	34.74	54.04	34.74	46.33
Gamma HHI	0.10	0.07	0.17	0.10	0.07
Net GEX	103.5M	66.4M	145.0M	75.2M	68.6M
Net DEX	-3.29B	-3.98B	-2.22B	-2.22B	-3.33B
Net VEX	-10.6M	-11.6M	-9.3M	-9.6M	-11.6M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.63	0.52	0.93	0.63	0.53
Total Volume	37,465.048	21,322	73,616	30,311	43,130
Total OI	224,273.952	189,171	247,640	189,171	235,134

Daily Data (21 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 Vol	Put Vol	Call OI	Put OI
2021-11-01	$491.56	$460.00	17.6%	5.2%	14.2%	21.4%	19.1%	2.2%	1.7%	75.2M	-2.22B	-9.6M	0.63	34.74	18,578	11,733	88,783	100,388
2021-11-02	$497.71	$460.00	17.2%	5.1%	14.0%	18.7%	18.7%	2.0%	2.5%	102.5M	-2.60B	-9.3M	0.61	42.01	24,511	14,872	92,921	104,303
2021-11-03	$502.29	$465.00	17.6%	5.2%	14.0%	21.0%	19.3%	2.0%	2.5%	111.4M	-2.77B	-9.7M	0.60	42.31	19,167	11,426	97,181	109,404
2021-11-04	$515.20	$470.00	19.5%	6.1%	15.5%	33.7%	22.4%	1.1%	2.4%	112.9M	-3.41B	-9.7M	0.53	45.63	48,131	25,485	101,679	111,320
2021-11-05	$511.96	$470.00	20.4%	6.3%	16.0%	40.2%	22.3%	0.7%	2.3%	66.4M	-3.14B	-10.3M	0.55	44.25	27,168	14,946	108,685	117,766
2021-11-08	$504.48	$475.00	22.1%	6.5%	17.3%	51.4%	23.3%	0.9%	-0.1%	76.1M	-2.58B	-10.7M	0.69	45.84	20,621	14,234	104,929	109,593
2021-11-09	$507.59	$475.00	22.2%	6.4%	16.4%	52.2%	23.2%	0.9%	-0.2%	90.2M	-2.78B	-10.9M	0.59	50.35	15,903	9,411	110,168	114,031
2021-11-10	$504.40	$475.00	22.5%	6.3%	16.7%	54.2%	22.9%	1.4%	-0.3%	79.2M	-2.62B	-11.1M	0.67	49.22	12,775	8,547	112,887	115,738
2021-11-11	$511.64	$475.00	22.0%	6.2%	16.9%	51.0%	22.7%	1.7%	-0.4%	107.9M	-3.08B	-10.4M	0.60	52.99	16,620	10,032	113,932	117,039
2021-11-12	$517.58	$480.00	21.9%	6.2%	16.9%	50.3%	22.7%	1.5%	-0.4%	128.0M	-3.41B	-10.6M	0.52	48.87	27,233	14,231	116,935	118,451
2021-11-15	$518.31	$480.00	22.8%	6.5%	15.5%	56.3%	23.9%	1.6%	-0.3%	101.4M	-3.19B	-10.6M	0.56	45.78	21,813	12,169	109,405	113,007
2021-11-16	$527.81	$480.00	22.1%	6.3%	16.1%	51.6%	23.0%	0.7%	-0.2%	129.1M	-3.76B	-10.2M	0.59	52.52	26,500	15,746	115,564	116,813
2021-11-17	$527.33	$485.00	22.2%	6.4%	16.3%	52.4%	23.1%	0.7%	-0.0%	134.6M	-3.64B	-11.0M	0.83	54.04	16,412	13,615	117,712	119,166
2021-11-18	$530.29	$490.00	22.3%	6.4%	15.9%	53.0%	23.1%	0.7%	-0.3%	145.0M	-3.84B	-10.9M	0.93	49.81	16,093	15,027	120,164	122,102
2021-11-19	$533.60	$490.00	22.4%	6.4%	15.7%	53.8%	23.4%	0.4%	0.5%	143.3M	-3.98B	-10.8M	0.64	50.62	24,225	15,383	120,636	127,004
2021-11-22	$542.49	$495.00	24.4%	6.9%	15.8%	66.8%	25.0%	-0.1%	-0.5%	92.1M	-3.55B	-10.7M	0.79	46.58	23,810	18,906	105,136	107,828
2021-11-23	$544.85	$500.00	24.3%	7.1%	15.0%	66.1%	25.8%	1.2%	-0.4%	96.6M	-3.64B	-11.4M	0.62	37.82	21,729	13,519	110,290	113,849
2021-11-24	$549.02	$500.00	24.3%	7.1%	15.0%	66.4%	25.7%	0.9%	-0.2%	104.1M	-3.84B	-11.4M	0.60	43.21	23,680	14,196	112,921	117,056
2021-11-26	$549.20	$505.00	27.7%	8.1%	14.9%	89.4%	29.7%	1.3%	-1.6%	120.7M	-3.82B	-11.3M	0.62	48.65	19,677	12,190	117,996	119,710
2021-11-29	$555.51	$505.00	26.2%	8.1%	15.0%	79.2%	28.9%	0.7%	-0.5%	89.2M	-3.91B	-10.5M	0.60	41.89	33,259	20,063	110,830	111,297
2021-11-30	$545.77	$510.00	28.2%	8.8%	17.1%	92.8%	31.7%	1.4%	-0.5%	68.6M	-3.33B	-11.6M	0.53	46.33	28,127	15,003	118,352	116,782