COST Options History — August 2020

In August 2020, COST traded between $329.32 and $348.40. ATM implied volatility averaged 21.0%, placing in the 11.8% IV rank vs the trailing year. The 30-day expected move averaged 5.5%. IV traded above realized volatility by 5.3% (HV 20d: 15.7%). Max pain ranged from $320.00 to $340.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 13 of 21 days. Put/call ratio averaged 0.67.

Notable Days

2020-08-04: Highest Volume — 76,273 contracts
2020-08-24: Largest IV spike — 11.9% change
2020-08-31: Highest IV Rank — 23.9%
2020-08-31: Largest Expected Move — 6.3%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$340.84	$329.32	$348.40	$329.32	$348.06
Max Pain	$333.57	$320.00	$340.00	$320.00	$340.00
ATM IV	21.0%	17.5%	28.6%	20.1%	28.6%
Expected Move	5.5%	5.0%	6.3%	5.5%	6.3%
HV 20d	15.7%	14.0%	17.1%	14.9%	15.6%
HV 60d	15.3%	15.0%	16.1%	15.0%	15.0%
IV Rank	11.8%	6.2%	23.9%	10.3%	23.9%
IV Percentile	37.6%	18.7%	75.0%	31.0%	75.0%
Term Structure	0.9%	-0.9%	4.3%	-0.4%	-0.0%
VWIV	20.3%	18.2%	23.1%	20.1%	23.1%
Skew 25d	2.3%	-0.8%	5.9%	1.9%	4.1%
Skew 10d	4.9%	-0.6%	9.5%	2.1%	6.6%
Call IV 25d	20.5%	17.0%	27.2%	20.7%	26.8%
Put IV 25d	22.8%	18.9%	30.9%	22.6%	30.9%
Bid-Ask Spread %	41.54	24.34	58.24	46.56	25.67
Gamma HHI	0.10	0.07	0.37	0.08	0.07
Net GEX	73.6M	36.8M	138.7M	55.1M	69.1M
Net DEX	-1.20B	-1.65B	-808.6M	-892.3M	-1.24B
Net VEX	-6.8M	-7.9M	-6.2M	-6.2M	-7.9M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.67	0.34	1.32	0.63	0.72
Total Volume	27,463.286	13,164	76,273	28,232	20,735
Total OI	214,265.857	190,835	231,543	190,835	217,306

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
2020-08-03	$329.32	$320.00	20.1%	5.5%	14.9%	10.3%	20.1%	1.9%	-0.4%	55.1M	-892.3M	-6.2M	0.63	46.56	17,361	10,871	95,046	95,789
2020-08-04	$339.43	$320.00	19.9%	5.6%	17.1%	9.9%	21.2%	-0.3%	-0.5%	98.9M	-1.49B	-6.3M	0.56	49.49	48,797	27,476	102,781	100,930
2020-08-05	$338.72	$320.00	20.8%	5.4%	17.1%	11.4%	20.7%	-0.8%	0.7%	98.3M	-1.42B	-6.3M	0.48	52.29	27,885	13,433	111,514	108,041
2020-08-06	$343.07	$330.00	19.5%	5.4%	14.2%	9.4%	19.8%	2.5%	0.3%	128.0M	-1.65B	-6.3M	0.52	57.68	28,457	14,899	115,961	111,860
2020-08-07	$341.15	$330.00	20.4%	5.7%	14.5%	10.7%	21.1%	2.4%	-0.3%	67.1M	-1.44B	-6.6M	0.58	58.24	15,303	8,851	116,000	115,543
2020-08-10	$340.24	$335.00	19.5%	5.7%	14.0%	9.4%	20.4%	3.4%	0.1%	65.0M	-1.18B	-6.6M	0.67	33.24	8,822	5,951	101,752	103,881
2020-08-11	$333.63	$335.00	20.4%	5.8%	15.6%	10.9%	20.9%	5.9%	-0.1%	36.8M	-808.6M	-6.8M	0.64	38.09	14,995	9,583	104,013	106,750
2020-08-12	$336.53	$335.00	19.3%	5.7%	15.8%	9.1%	20.9%	3.7%	0.5%	55.5M	-996.2M	-6.7M	0.70	49.90	10,199	7,101	107,583	110,489
2020-08-13	$335.69	$335.00	19.9%	5.8%	15.8%	9.9%	20.5%	3.7%	0.3%	55.9M	-925.1M	-6.9M	0.90	37.17	7,459	6,680	109,896	112,893
2020-08-14	$336.11	$335.00	19.2%	5.6%	15.7%	8.9%	20.1%	4.6%	0.5%	43.2M	-944.2M	-6.7M	0.97	50.17	11,623	11,325	111,344	118,311
2020-08-17	$340.08	$335.00	19.2%	5.5%	16.0%	8.9%	20.2%	2.4%	4.3%	61.1M	-1.15B	-6.2M	0.61	40.78	12,485	7,632	95,268	108,527
2020-08-18	$341.00	$335.00	18.0%	5.2%	16.0%	7.0%	18.7%	2.5%	4.3%	78.8M	-1.21B	-6.4M	0.49	24.34	10,863	5,365	98,295	109,581
2020-08-19	$340.68	$335.00	17.5%	5.0%	16.1%	6.2%	18.2%	2.5%	3.8%	78.5M	-1.18B	-6.3M	0.75	31.70	7,536	5,628	98,733	110,488
2020-08-20	$341.31	$335.00	19.0%	5.3%	15.8%	8.5%	19.2%	2.7%	3.3%	78.6M	-1.21B	-6.4M	1.32	49.20	13,875	18,309	99,626	110,801
2020-08-21	$345.23	$335.00	19.8%	5.2%	16.0%	9.8%	18.8%	2.7%	3.9%	138.7M	-1.57B	-6.9M	0.36	51.37	30,066	10,857	106,046	123,646
2020-08-24	$344.03	$335.00	22.1%	5.1%	16.0%	13.5%	18.8%	0.6%	-0.3%	57.8M	-1.11B	-6.9M	1.02	29.40	14,293	14,638	90,359	103,754
2020-08-25	$344.67	$340.00	22.6%	5.1%	16.0%	14.3%	19.3%	0.7%	0.6%	57.6M	-1.09B	-7.4M	0.79	36.56	8,677	6,878	94,639	111,438
2020-08-26	$343.78	$340.00	23.6%	5.1%	16.0%	16.0%	19.0%	1.0%	0.1%	52.3M	-1.07B	-7.3M	0.48	37.63	16,058	7,675	96,886	113,789
2020-08-27	$346.61	$340.00	25.6%	5.9%	15.7%	19.1%	22.4%	1.8%	-0.6%	72.9M	-1.24B	-7.8M	0.55	32.72	20,704	11,338	104,276	118,096
2020-08-28	$348.40	$340.00	26.8%	6.0%	15.7%	21.0%	22.2%	0.2%	-0.9%	96.6M	-1.37B	-7.8M	0.34	40.08	19,384	6,662	106,015	121,637
2020-08-31	$348.06	$340.00	28.6%	6.3%	15.6%	23.9%	23.1%	4.1%	-0.0%	69.1M	-1.24B	-7.9M	0.72	25.67	12,078	8,657	105,344	111,962