COST Options History — July 2021

In July 2021, COST traded between $394.10 and $430.33. ATM implied volatility averaged 16.0%, placing in the 4.8% IV rank vs the trailing year. The 30-day expected move averaged 4.5%. IV traded above realized volatility by 3.6% (HV 20d: 12.4%). Max pain ranged from $370.00 to $405.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 18 of 21 days. Put/call ratio averaged 0.60.

Notable Days

2021-07-09: Highest Volume — 44,049 contracts
2021-07-19: Largest IV spike — 16.0% change
2021-07-19: Highest IV Rank — 13.0%
2021-07-19: Largest Expected Move — 5.1%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$413.09	$394.10	$430.33	$394.10	$430.33
Max Pain	$394.76	$370.00	$405.00	$370.00	$405.00
ATM IV	16.0%	15.1%	17.9%	15.6%	15.8%
Expected Move	4.5%	3.9%	5.1%	4.1%	4.3%
HV 20d	12.4%	11.3%	14.0%	13.5%	11.5%
HV 60d	14.9%	14.4%	15.2%	14.8%	14.5%
IV Rank	4.8%	1.1%	13.0%	3.2%	4.0%
IV Percentile	7.4%	0.8%	18.3%	4.0%	8.3%
Term Structure	0.2%	-0.6%	0.6%	0.0%	0.3%
VWIV	16.5%	14.2%	18.5%	15.3%	16.0%
Skew 25d	1.1%	0.5%	1.8%	0.8%	1.5%
Skew 10d	2.7%	0.9%	4.1%	0.9%	3.2%
Call IV 25d	15.9%	14.7%	17.7%	15.8%	15.5%
Put IV 25d	17.0%	15.4%	19.5%	16.5%	17.0%
Bid-Ask Spread %	29.26	12.87	48.11	12.87	41.05
Gamma HHI	0.12	0.06	0.34	0.12	0.34
Net GEX	105.4M	49.7M	190.0M	113.6M	124.0M
Net DEX	-1.97B	-2.89B	-1.36B	-1.60B	-1.94B
Net VEX	-8.5M	-9.0M	-7.9M	-9.0M	-8.4M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.60	0.32	0.87	0.66	0.61
Total Volume	21,622.571	10,942	44,049	13,783	37,173
Total OI	195,896.429	160,817	227,486	216,020	174,719

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
2021-07-01	$394.10	$370.00	15.6%	4.1%	13.5%	3.2%	15.3%	0.8%	0.0%	113.6M	-1.60B	-9.0M	0.66	12.87	8,296	5,487	115,843	100,177
2021-07-02	$399.65	$375.00	15.1%	3.9%	14.0%	1.2%	14.2%	0.7%	0.4%	190.0M	-2.08B	-8.8M	0.58	27.27	17,288	9,965	117,622	102,179
2021-07-06	$399.64	$390.00	16.0%	4.7%	11.8%	5.1%	17.1%	1.6%	-0.2%	133.2M	-1.89B	-8.7M	0.44	13.15	16,992	7,395	111,252	96,577
2021-07-07	$405.12	$390.00	16.2%	4.7%	12.4%	5.9%	16.9%	1.1%	0.2%	159.7M	-2.32B	-8.7M	0.43	23.61	21,633	9,336	115,516	99,734
2021-07-08	$406.64	$395.00	16.9%	4.9%	12.3%	8.7%	17.7%	0.8%	0.2%	175.6M	-2.45B	-8.2M	0.55	32.02	17,000	9,309	118,722	101,919
2021-07-09	$412.20	$395.00	16.0%	4.7%	12.8%	4.9%	17.1%	1.2%	-0.6%	162.3M	-2.89B	-8.4M	0.41	32.06	31,322	12,727	121,739	105,360
2021-07-12	$408.17	$395.00	16.3%	4.6%	13.6%	6.4%	17.1%	0.5%	-0.3%	111.6M	-2.29B	-8.6M	0.61	17.59	17,762	10,809	114,944	100,321
2021-07-13	$407.16	$395.00	16.3%	4.7%	13.7%	6.4%	17.2%	0.5%	0.0%	103.0M	-2.22B	-8.8M	0.80	13.30	7,072	5,691	117,324	104,719
2021-07-14	$410.11	$395.00	15.5%	4.5%	13.8%	3.0%	16.3%	0.5%	0.1%	107.0M	-2.41B	-8.5M	0.62	13.38	8,812	5,469	117,734	107,560
2021-07-15	$411.88	$395.00	15.7%	4.6%	12.7%	3.9%	16.2%	0.9%	0.1%	109.5M	-2.52B	-8.4M	0.67	13.07	10,145	6,841	117,831	107,819
2021-07-16	$410.94	$395.00	15.4%	4.4%	12.1%	2.6%	16.2%	0.8%	0.0%	99.9M	-2.45B	-8.5M	0.55	31.97	11,947	6,603	118,637	108,849
2021-07-19	$412.63	$395.00	17.9%	5.1%	11.5%	13.0%	18.5%	1.8%	0.5%	49.7M	-1.36B	-8.3M	0.47	39.72	15,557	7,307	79,060	81,757
2021-07-20	$416.55	$400.00	16.6%	4.7%	11.5%	7.3%	17.2%	1.4%	0.4%	70.6M	-1.49B	-8.5M	0.48	35.11	12,678	6,085	81,631	84,800
2021-07-21	$414.20	$400.00	15.9%	4.5%	11.3%	4.4%	16.6%	1.3%	0.1%	58.5M	-1.36B	-8.6M	0.71	35.16	7,740	5,509	83,008	87,075
2021-07-22	$417.41	$400.00	16.1%	4.6%	11.4%	5.1%	16.6%	1.4%	0.2%	81.8M	-1.56B	-8.3M	0.76	36.56	7,895	6,008	84,036	88,859
2021-07-23	$423.65	$400.00	15.2%	4.3%	12.0%	1.5%	16.3%	1.1%	0.6%	77.9M	-1.86B	-8.0M	0.72	48.11	13,459	9,752	84,789	90,753
2021-07-26	$423.29	$400.00	15.6%	4.4%	12.1%	3.3%	15.8%	1.1%	0.2%	61.7M	-1.66B	-7.9M	0.87	42.21	7,304	6,347	77,643	84,317
2021-07-27	$423.72	$400.00	15.8%	4.4%	12.0%	4.1%	15.9%	1.6%	0.4%	60.6M	-1.64B	-8.3M	0.60	39.71	6,830	4,112	79,542	86,263
2021-07-28	$422.09	$400.00	16.2%	4.5%	12.2%	5.8%	16.0%	1.3%	0.4%	56.2M	-1.56B	-8.6M	0.32	41.23	17,855	5,630	81,742	88,030
2021-07-29	$425.38	$400.00	15.1%	4.2%	11.6%	1.1%	15.7%	1.6%	0.4%	107.2M	-1.78B	-8.4M	0.73	25.34	10,950	7,982	84,151	89,272
2021-07-30	$430.33	$405.00	15.8%	4.3%	11.5%	4.0%	16.0%	1.5%	0.3%	124.0M	-1.94B	-8.4M	0.61	41.05	23,102	14,071	83,236	91,483