COST Options History — March 2023

In March 2023, COST traded between $469.11 and $496.54. ATM implied volatility averaged 23.7%, placing in the 11.6% IV rank vs the trailing year. The 30-day expected move averaged 6.8%. IV traded above realized volatility by 5.9% (HV 20d: 17.8%). Max pain ranged from $485.00 to $495.00. Net GEX was positive for 12 of 23 trading days. Term structure was in contango for 8 of 23 days. Put/call ratio averaged 0.99.

Notable Days

2023-03-03: Highest Volume — 124,427 contracts
2023-03-03: Largest IV drop — 18.1% change
2023-03-01: Highest IV Rank — 25.8%
2023-03-01: Largest Expected Move — 9.0%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$485.50	$469.11	$496.54	$479.13	$496.54
Max Pain	$488.80	$485.00	$495.00	$495.00	$490.00
ATM IV	23.7%	20.8%	28.1%	28.1%	20.8%
Expected Move	6.8%	5.6%	9.0%	9.0%	5.6%
HV 20d	17.8%	15.7%	19.1%	16.2%	16.1%
HV 60d	23.5%	22.9%	24.6%	23.8%	23.2%
IV Rank	11.6%	0.2%	25.8%	25.8%	0.2%
IV Percentile	15.7%	0.8%	43.7%	43.7%	0.8%
Term Structure	-0.0%	-0.6%	0.8%	-0.5%	0.8%
VWIV	24.2%	20.6%	31.9%	31.9%	20.6%
Skew 25d	4.6%	3.3%	5.3%	4.9%	4.4%
Skew 10d	9.5%	6.6%	11.2%	9.4%	9.3%
Call IV 25d	21.7%	18.3%	26.0%	26.0%	18.3%
Put IV 25d	26.3%	22.7%	30.9%	30.9%	22.7%
Bid-Ask Spread %	5.00	3.10	8.26	4.71	3.62
Gamma HHI	0.05	0.03	0.21	0.04	0.05
Net GEX	-8.3M	-121.4M	57.9M	-33.7M	57.9M
Net DEX	61.5M	-514.5M	987.3M	547.4M	-514.5M
Net VEX	-11.3M	-11.6M	-10.6M	-11.4M	-11.2M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.99	0.51	1.31	1.22	0.84
Total Volume	31,369.826	15,495	124,427	26,405	31,293
Total OI	213,145.348	179,206	245,197	206,359	213,341

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 Vol	Put Vol	Call OI	Put OI
2023-03-01	$479.13	$495.00	28.1%	9.0%	16.2%	25.8%	31.9%	4.9%	-0.5%	-33.7M	547.4M	-11.4M	1.22	4.71	11,892	14,513	97,365	108,994
2023-03-02	$486.83	$495.00	26.8%	8.6%	15.7%	21.7%	30.6%	3.9%	-0.5%	-8.7M	137.8M	-11.5M	0.71	5.57	34,524	24,630	99,993	114,212
2023-03-03	$475.82	$495.00	21.9%	6.1%	16.7%	5.8%	21.8%	3.3%	0.3%	-121.4M	889.7M	-10.6M	0.88	8.26	66,175	58,252	116,484	128,713
2023-03-06	$482.38	$490.00	21.7%	6.2%	17.4%	5.0%	22.6%	3.6%	-0.0%	8.7M	88.3M	-11.1M	0.74	3.72	32,862	24,291	103,463	113,140
2023-03-07	$485.75	$490.00	22.9%	6.5%	17.7%	9.0%	22.7%	3.8%	-0.1%	16.2M	-98.4M	-11.6M	0.51	3.10	25,612	13,101	106,314	116,516
2023-03-08	$485.38	$490.00	23.2%	6.5%	17.6%	9.7%	24.0%	3.7%	-0.2%	8.6M	-60.5M	-11.6M	1.29	3.51	10,645	13,687	109,351	119,388
2023-03-09	$479.74	$490.00	25.0%	7.0%	16.4%	15.9%	24.8%	4.3%	-0.4%	-32.0M	291.3M	-11.6M	1.03	4.46	11,211	11,541	111,218	124,242
2023-03-10	$469.11	$490.00	27.0%	7.6%	17.8%	22.5%	26.5%	5.0%	-0.6%	-94.3M	987.3M	-11.4M	1.08	7.70	17,115	18,543	111,085	125,078
2023-03-13	$473.44	$485.00	26.7%	7.5%	18.4%	21.2%	26.3%	5.3%	-0.3%	-43.6M	597.0M	-11.3M	0.97	6.49	7,849	7,646	101,004	116,583
2023-03-14	$479.92	$485.00	24.9%	7.1%	18.1%	15.4%	24.9%	4.8%	-0.2%	-20.2M	262.0M	-11.4M	1.15	5.90	11,619	13,362	102,986	118,467
2023-03-15	$483.67	$485.00	25.5%	7.2%	18.5%	17.3%	26.0%	5.2%	-0.4%	-10.1M	82.1M	-11.6M	1.31	6.92	6,851	8,961	104,841	119,905
2023-03-16	$487.63	$485.00	23.3%	6.6%	18.4%	10.1%	23.7%	4.8%	-0.3%	21.8M	-149.8M	-11.4M	1.15	6.21	8,392	9,647	106,529	121,785
2023-03-17	$485.21	$485.00	25.3%	7.2%	18.3%	16.8%	25.9%	5.0%	-0.3%	3.2M	-16.3M	-11.4M	1.16	5.55	14,071	16,353	108,129	122,656
2023-03-20	$488.35	$485.00	24.1%	6.9%	18.4%	13.0%	24.7%	5.1%	-0.4%	-2.2M	-94.2M	-11.4M	1.05	4.16	8,118	8,522	79,763	99,443
2023-03-21	$491.68	$485.00	22.2%	6.4%	18.5%	6.7%	22.6%	4.8%	0.4%	9.2M	-243.9M	-11.3M	1.03	4.41	9,009	9,270	82,645	102,869
2023-03-22	$490.96	$485.00	22.4%	6.4%	18.2%	7.4%	22.8%	5.0%	-0.0%	7.1M	-228.4M	-11.3M	1.27	7.09	8,447	10,750	84,966	106,286
2023-03-23	$488.26	$487.50	23.6%	6.8%	18.2%	11.2%	22.3%	5.2%	-0.1%	-13.7M	-43.1M	-11.4M	0.71	5.59	17,500	12,411	86,702	108,709
2023-03-24	$495.03	$490.00	22.5%	6.4%	18.4%	7.6%	23.2%	4.8%	0.1%	32.5M	-461.2M	-11.5M	1.19	4.32	14,019	16,725	94,101	111,864
2023-03-27	$493.33	$490.00	21.6%	6.3%	18.3%	4.8%	22.4%	5.0%	0.7%	24.9M	-315.2M	-11.2M	1.09	3.71	11,262	12,240	88,589	101,288
2023-03-28	$485.87	$490.00	23.1%	6.6%	19.1%	9.4%	23.0%	5.3%	0.5%	-17.0M	96.2M	-11.2M	1.00	3.33	10,375	10,389	91,732	107,080
2023-03-29	$490.60	$490.00	21.7%	6.2%	18.9%	4.8%	21.4%	4.9%	0.6%	2.3M	-125.0M	-11.2M	0.68	3.53	11,597	7,862	94,161	111,042
2023-03-30	$491.91	$490.00	21.6%	6.0%	18.1%	4.7%	21.2%	4.7%	0.6%	13.2M	-213.7M	-11.2M	0.77	3.20	10,370	8,002	96,134	113,187
2023-03-31	$496.54	$490.00	20.8%	5.6%	16.1%	0.2%	20.6%	4.4%	0.8%	57.9M	-514.5M	-11.2M	0.84	3.62	16,972	14,321	97,563	115,778