COST Options History — May 2024

In May 2024, COST traded between $726.27 and $815.29. ATM implied volatility averaged 24.2%, placing in the 56.1% IV rank vs the trailing year. The 30-day expected move averaged 6.6%. IV traded above realized volatility by 9.3% (HV 20d: 15.0%). Max pain ranged from $695.00 to $730.00. Net GEX was positive for 22 of 22 trading days. Term structure was in contango for 0 of 22 days. Put/call ratio averaged 0.87.

Notable Days

2024-05-31: Highest Volume — 101,689 contracts
2024-05-31: Largest IV drop — 27.8% change
2024-05-30: Highest IV Rank — 69.4%
2024-05-30: Largest Expected Move — 8.4%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$783.35	$726.27	$815.29	$726.27	$805.94
Max Pain	$717.27	$695.00	$730.00	$725.00	$730.00
ATM IV	24.2%	19.3%	26.8%	24.9%	19.3%
Expected Move	6.6%	5.2%	8.4%	5.5%	5.5%
HV 20d	15.0%	13.0%	16.6%	13.0%	15.5%
HV 60d	22.6%	22.0%	22.9%	22.0%	22.6%
IV Rank	56.1%	30.1%	69.4%	59.7%	30.1%
IV Percentile	94.3%	61.9%	98.4%	98.0%	61.9%
Term Structure	-1.1%	-2.1%	-0.5%	-0.8%	-0.7%
VWIV	23.7%	18.8%	30.5%	19.9%	19.9%
Skew 25d	0.9%	-0.0%	2.2%	2.2%	0.8%
Skew 10d	2.0%	0.0%	5.0%	4.9%	2.2%
Call IV 25d	24.1%	19.3%	27.1%	24.0%	19.3%
Put IV 25d	25.0%	20.1%	27.6%	26.2%	20.1%
Bid-Ask Spread %	48.92	40.55	60.56	59.33	60.56
Gamma HHI	0.06	0.03	0.18	0.04	0.03
Net GEX	149.4M	74.3M	262.5M	85.1M	74.3M
Net DEX	-4.46B	-5.61B	-2.13B	-2.13B	-4.40B
Net VEX	-19.1M	-20.2M	-18.4M	-19.9M	-18.5M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.87	0.58	1.20	1.20	1.19
Total Volume	41,094.5	18,283	101,689	18,283	101,689
Total OI	268,894.727	248,289	302,467	262,202	302,467

Daily Data (22 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
2024-05-01	$726.27	$725.00	24.9%	5.5%	13.0%	59.7%	19.9%	2.2%	-0.8%	85.1M	-2.13B	-19.9M	1.20	59.33	8,317	9,966	130,812	131,390
2024-05-02	$732.44	$725.00	25.2%	5.6%	13.2%	61.1%	19.8%	2.1%	-0.7%	138.8M	-2.59B	-20.2M	0.87	56.70	16,875	14,712	131,480	132,917
2024-05-03	$745.20	$725.00	24.1%	5.2%	14.1%	55.3%	18.8%	1.8%	-0.7%	229.4M	-3.66B	-19.7M	0.64	57.63	29,191	18,689	133,820	136,137
2024-05-06	$753.11	$695.00	24.2%	6.5%	14.3%	55.9%	23.0%	1.7%	-0.5%	146.6M	-3.76B	-18.9M	0.70	42.95	21,673	15,065	126,275	129,420
2024-05-07	$769.17	$700.00	24.2%	6.4%	15.7%	56.0%	23.1%	1.4%	-0.8%	176.0M	-4.63B	-18.6M	0.87	40.74	26,989	23,562	127,815	133,588
2024-05-08	$764.52	$705.00	24.1%	6.4%	16.0%	55.1%	23.1%	1.2%	-1.3%	143.9M	-4.24B	-19.4M	1.09	40.55	16,560	17,987	132,436	140,123
2024-05-09	$779.37	$710.00	23.8%	6.4%	16.5%	54.0%	22.8%	0.9%	-1.1%	240.3M	-5.20B	-18.6M	0.73	43.66	30,339	22,274	135,589	145,073
2024-05-10	$785.88	$715.00	23.5%	6.2%	16.6%	52.0%	22.3%	0.9%	-1.1%	262.5M	-5.61B	-18.4M	0.65	49.48	32,312	20,988	136,444	150,198
2024-05-13	$776.52	$715.00	24.0%	6.5%	15.9%	55.0%	22.9%	1.1%	-1.2%	130.8M	-4.35B	-19.0M	1.03	45.13	12,176	12,513	126,940	138,860
2024-05-14	$776.58	$715.00	24.0%	6.5%	15.7%	54.7%	23.3%	1.3%	-1.3%	132.5M	-4.32B	-19.1M	0.84	46.91	11,478	9,636	129,520	141,991
2024-05-15	$787.14	$715.00	23.3%	6.5%	15.8%	51.4%	23.2%	1.1%	-0.5%	194.4M	-5.02B	-18.6M	0.96	47.30	17,521	16,873	131,574	143,618
2024-05-16	$794.25	$715.00	24.0%	6.6%	15.6%	55.0%	23.5%	0.7%	-1.2%	221.1M	-5.44B	-18.5M	0.58	49.18	45,624	26,582	133,617	147,409
2024-05-17	$796.79	$720.00	23.6%	6.5%	14.9%	52.6%	23.1%	0.5%	-1.5%	139.7M	-5.46B	-18.7M	0.59	51.31	24,500	14,361	138,045	152,661
2024-05-20	$795.16	$720.00	23.9%	6.7%	14.9%	54.3%	24.0%	0.4%	-0.8%	118.9M	-4.40B	-19.6M	1.10	48.85	12,273	13,535	117,481	130,808
2024-05-21	$798.58	$720.00	24.3%	6.9%	14.8%	56.5%	24.5%	0.2%	-1.0%	121.5M	-4.56B	-19.7M	0.61	49.84	11,831	7,269	119,657	136,402
2024-05-22	$800.92	$720.00	24.5%	7.0%	14.8%	57.4%	25.0%	0.3%	-1.0%	138.5M	-4.69B	-19.3M	0.64	50.71	17,823	11,343	121,335	138,156
2024-05-23	$798.55	$720.00	25.2%	7.3%	14.6%	61.2%	25.7%	0.6%	-1.2%	106.7M	-4.50B	-19.3M	0.70	48.99	18,756	13,097	123,385	140,882
2024-05-24	$810.87	$720.00	24.6%	7.2%	14.8%	57.9%	25.4%	-0.0%	-1.3%	220.4M	-5.27B	-19.2M	0.87	45.02	27,950	24,265	124,947	143,654
2024-05-28	$812.68	$720.00	25.5%	7.7%	14.1%	62.8%	27.7%	0.5%	-1.2%	90.9M	-4.63B	-19.3M	1.06	47.48	13,394	14,159	114,216	135,671
2024-05-29	$808.38	$725.00	26.4%	8.1%	14.2%	67.4%	29.1%	0.1%	-1.6%	80.8M	-4.49B	-19.2M	1.14	43.86	12,437	14,133	118,970	140,828
2024-05-30	$815.29	$725.00	26.8%	8.4%	14.3%	69.4%	30.5%	0.6%	-2.1%	92.9M	-4.80B	-19.5M	1.10	50.02	34,895	38,467	123,374	145,699
2024-05-31	$805.94	$730.00	19.3%	5.5%	15.5%	30.1%	19.9%	0.8%	-0.7%	74.3M	-4.40B	-18.5M	1.19	60.56	46,508	55,181	136,965	165,502