COST Options History — March 2020

In March 2020, COST traded between $281.54 and $318.53. ATM implied volatility averaged 51.0%, placing in the 75.5% IV rank vs the trailing year. The 30-day expected move averaged 14.7%. IV traded below realized volatility by 2.5% (HV 20d: 53.5%). Max pain ranged from $300.00 to $305.00. Net GEX was positive for 18 of 22 trading days. Term structure was in contango for 2 of 22 days. Put/call ratio averaged 0.72.

Notable Days

2020-03-05: Highest Volume — 103,658 contracts
2020-03-05: Largest IV spike — 26.9% change
2020-03-09: Highest IV Rank — 100.0%
2020-03-18: Largest Expected Move — 21.9%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$296.91	$281.54	$318.53	$305.75	$288.08
Max Pain	$300.68	$300.00	$305.00	$305.00	$300.00
ATM IV	51.0%	34.5%	76.4%	39.5%	40.0%
Expected Move	14.7%	10.9%	21.9%	12.4%	12.0%
HV 20d	53.5%	42.7%	61.4%	47.5%	42.8%
HV 60d	33.7%	29.0%	37.4%	29.0%	37.4%
IV Rank	75.5%	42.0%	100.0%	77.0%	42.0%
IV Percentile	97.9%	92.5%	100.0%	99.6%	92.5%
Term Structure	-1.5%	-4.0%	1.0%	-1.0%	-1.2%
VWIV	50.1%	38.9%	73.6%	43.9%	42.8%
Skew 25d	16.5%	8.0%	29.9%	8.0%	11.9%
Skew 10d	29.2%	2.3%	52.2%	17.4%	2.3%
Call IV 25d	42.8%	30.6%	60.6%	35.4%	31.3%
Put IV 25d	59.3%	39.0%	90.4%	43.3%	43.2%
Bid-Ask Spread %	29.96	13.22	48.60	20.25	47.13
Gamma HHI	0.05	0.04	0.06	0.05	0.04
Net GEX	7.8M	-13.2M	41.9M	14.0M	3.8M
Net DEX	-114.6M	-932.3M	406.5M	-315.8M	36.2M
Net VEX	-6.9M	-7.6M	-6.1M	-6.3M	-6.3M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.72	0.41	1.27	0.41	0.83
Total Volume	32,512.955	15,028	103,658	51,697	16,284
Total OI	184,475.227	155,858	227,708	157,174	179,248

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
2020-03-02	$305.75	$305.00	39.5%	12.4%	47.5%	77.0%	43.9%	8.0%	-1.0%	14.0M	-315.8M	-6.3M	0.41	20.25	36,774	14,923	74,569	82,605
2020-03-03	$305.57	$305.00	40.0%	12.7%	47.4%	78.3%	43.5%	11.4%	-1.5%	18.1M	-344.6M	-6.6M	0.75	20.46	18,294	13,678	83,690	86,071
2020-03-04	$318.53	$305.00	34.5%	10.9%	49.6%	62.0%	38.9%	8.4%	-1.4%	41.9M	-932.3M	-6.6M	0.55	20.03	28,698	15,855	88,594	92,163
2020-03-05	$315.56	$300.00	43.7%	11.3%	49.7%	89.5%	40.6%	9.2%	-2.9%	31.7M	-772.2M	-7.2M	0.44	21.22	72,186	31,472	95,020	97,713
2020-03-06	$307.78	$300.00	42.9%	11.0%	50.5%	87.0%	42.0%	18.1%	-2.5%	2.7M	-264.4M	-7.3M	0.72	14.48	44,649	31,974	116,278	111,430
2020-03-09	$304.27	$300.00	49.6%	14.0%	50.4%	100.0%	48.6%	16.2%	0.2%	11.9M	-240.3M	-7.5M	0.55	19.06	18,015	9,913	92,711	94,247
2020-03-10	$306.88	$300.00	44.3%	12.0%	50.5%	85.1%	41.7%	16.4%	-2.5%	17.7M	-329.7M	-7.4M	0.75	22.48	15,313	11,532	94,745	95,451
2020-03-11	$297.43	$300.00	52.9%	15.0%	51.6%	100.0%	52.4%	15.8%	-0.6%	707.0K	-10.9M	-7.5M	1.26	25.48	8,564	10,782	97,664	99,115
2020-03-12	$283.49	$300.00	65.1%	18.3%	53.7%	100.0%	60.8%	21.4%	-1.9%	-12.2M	406.5M	-7.4M	1.27	13.22	12,361	15,723	98,883	101,973
2020-03-13	$291.90	$300.00	61.9%	17.1%	55.0%	93.8%	56.5%	21.9%	-4.0%	-7.3M	174.9M	-7.4M	0.76	42.21	13,282	10,067	99,016	99,693
2020-03-16	$289.90	$300.00	70.8%	20.1%	54.9%	100.0%	68.2%	24.8%	-2.4%	2.4M	59.6M	-7.3M	0.96	16.01	8,883	8,521	89,205	90,780
2020-03-17	$301.26	$300.00	65.1%	18.6%	56.7%	90.0%	61.4%	24.9%	-1.6%	10.3M	-237.1M	-7.4M	0.49	14.96	19,239	9,480	89,922	91,869
2020-03-18	$299.76	$300.00	76.4%	21.9%	56.7%	100.0%	73.6%	29.9%	-2.0%	11.5M	-254.7M	-7.6M	0.84	17.11	18,306	15,338	92,796	94,133
2020-03-19	$308.11	$300.00	62.4%	18.0%	57.7%	77.7%	59.2%	25.8%	-2.3%	24.0M	-465.8M	-7.4M	0.58	31.07	14,890	8,604	95,469	97,466
2020-03-20	$291.26	$300.00	55.9%	16.2%	60.8%	67.3%	51.5%	24.0%	-1.9%	-13.2M	224.4M	-6.6M	0.62	44.13	17,672	11,016	95,576	98,303
2020-03-23	$281.54	$300.00	52.7%	15.7%	61.4%	62.3%	52.9%	16.1%	-0.5%	-4.0M	263.4M	-6.2M	0.63	38.59	15,931	10,072	74,302	81,556
2020-03-24	$284.95	$300.00	47.0%	13.7%	61.1%	53.1%	45.7%	11.3%	-2.4%	734.3K	177.4M	-6.1M	0.76	44.78	14,086	10,705	82,099	83,993
2020-03-25	$284.64	$300.00	48.4%	14.9%	61.1%	55.3%	46.6%	12.1%	-0.4%	1.2M	171.9M	-6.4M	0.52	44.97	16,447	8,624	87,599	89,719
2020-03-26	$288.04	$300.00	43.3%	12.5%	60.2%	47.2%	45.7%	9.6%	1.0%	7.5M	57.6M	-6.4M	0.67	45.00	12,470	8,356	91,975	89,405
2020-03-27	$286.66	$300.00	45.4%	13.5%	55.4%	50.6%	46.4%	14.3%	-0.5%	3.3M	83.2M	-6.5M	0.85	47.95	11,525	9,753	93,905	91,543
2020-03-30	$290.68	$300.00	40.5%	11.4%	42.7%	42.8%	40.0%	12.2%	-0.4%	5.0M	-8.0M	-6.4M	0.58	48.60	9,507	5,521	87,668	88,293
2020-03-31	$288.08	$300.00	40.0%	12.0%	42.8%	42.0%	42.8%	11.9%	-1.2%	3.8M	36.2M	-6.3M	0.83	47.13	8,917	7,367	89,946	89,302