COST Options History — May 2014

In May 2014, COST traded between $111.98 and $116.51. ATM implied volatility averaged 14.9%, placing in the 20.1% IV rank vs the trailing year. The 30-day expected move averaged 5.0%. IV traded above realized volatility by 1.6% (HV 20d: 13.3%). Max pain ranged from $90.00 to $90.00. Net GEX was positive for 14 of 21 trading days. Term structure was in contango for 3 of 21 days. Put/call ratio averaged 1.02.

Notable Days

2014-05-28: Highest Volume — 24,222 contracts
2014-05-29: Largest IV drop — 16.4% change
2014-05-07: Highest IV Rank — 33.5%
2014-05-07: Largest Expected Move — 5.2%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$114.86	$111.98	$116.51	$115.56	$116.02
Max Pain	$90.00	$90.00	$90.00	$90.00	$90.00
ATM IV	14.9%	11.6%	16.4%	15.1%	11.6%
Expected Move	5.0%	4.8%	5.2%	5.1%	4.9%
HV 20d	13.3%	10.0%	15.7%	10.3%	15.7%
HV 60d	13.0%	11.7%	13.5%	13.5%	13.3%
IV Rank	20.1%	0.0%	33.5%	25.8%	0.0%
IV Percentile	32.4%	0.0%	59.5%	34.1%	0.0%
Term Structure	-0.3%	-1.2%	0.1%	-0.2%	0.1%
VWIV	18.6%	17.1%	20.4%	20.2%	18.3%
Skew 25d	1.8%	1.1%	2.3%	2.0%	1.1%
Skew 10d	3.8%	2.4%	5.1%	4.1%	2.7%
Call IV 25d	14.3%	11.3%	15.8%	14.7%	11.3%
Put IV 25d	16.1%	12.4%	17.5%	16.7%	12.4%
Bid-Ask Spread %	9.79	8.07	11.72	8.77	11.23
Gamma HHI	0.17	0.09	0.33	0.23	0.28
Net GEX	8.7M	-9.5M	35.0M	21.7M	35.0M
Net DEX	-126.4M	-230.1M	19.7M	-219.3M	-205.9M
Net VEX	-2.4M	-2.5M	-2.3M	-2.4M	-2.4M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	1.02	0.40	4.03	1.08	0.67
Total Volume	10,732.81	3,498	24,222	3,498	17,758
Total OI	141,729.429	134,011	156,015	138,821	156,015

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
2014-05-01	$115.56	$90.00	15.1%	5.1%	10.3%	25.8%	20.2%	2.0%	-0.2%	21.7M	-219.3M	-2.4M	1.08	8.77	1,683	1,815	76,875	61,946
2014-05-02	$115.15	$90.00	15.1%	5.1%	10.5%	26.0%	18.3%	2.3%	0.0%	22.9M	-194.4M	-2.4M	0.59	8.07	3,363	1,999	77,073	62,541
2014-05-05	$114.49	$90.00	15.6%	5.1%	10.0%	29.1%	19.0%	2.0%	-0.5%	13.0M	-142.3M	-2.4M	1.36	8.81	2,448	3,328	74,047	60,302
2014-05-06	$112.83	$90.00	15.8%	5.1%	11.6%	30.2%	18.1%	2.1%	-0.6%	-694.9K	-37.1M	-2.3M	4.03	10.03	3,785	15,247	74,854	61,760
2014-05-07	$111.98	$90.00	16.4%	5.2%	10.3%	33.5%	18.8%	1.7%	-0.5%	-2.2M	19.7M	-2.4M	0.99	9.69	5,277	5,217	76,355	64,364
2014-05-08	$114.73	$90.00	15.8%	5.1%	13.5%	29.8%	20.4%	1.6%	-0.4%	21.2M	-163.1M	-2.4M	0.66	9.08	8,284	5,485	78,363	66,227
2014-05-09	$115.39	$90.00	15.5%	5.1%	13.1%	28.3%	17.5%	1.6%	-0.5%	17.5M	-205.0M	-2.4M	0.80	8.70	6,491	5,175	79,355	69,545
2014-05-12	$116.51	$90.00	15.2%	5.1%	13.4%	26.2%	20.4%	1.8%	-0.1%	16.7M	-230.1M	-2.4M	0.40	8.22	10,826	4,282	72,551	65,234
2014-05-13	$116.29	$90.00	15.0%	5.1%	13.5%	25.1%	19.7%	1.8%	-0.4%	18.6M	-203.2M	-2.4M	0.44	9.54	9,701	4,235	75,426	66,859
2014-05-14	$115.13	$90.00	15.2%	5.0%	13.9%	26.2%	19.2%	1.8%	-0.7%	1.9M	-102.8M	-2.5M	1.65	9.00	3,278	5,413	72,311	68,759
2014-05-15	$114.35	$90.00	15.4%	5.0%	13.5%	27.9%	18.4%	1.9%	-1.2%	-4.9M	-57.0M	-2.5M	1.99	9.86	1,243	2,477	71,691	69,832
2014-05-16	$115.61	$90.00	14.8%	5.0%	14.1%	14.2%	18.2%	1.7%	-0.5%	5.2M	-139.1M	-2.5M	0.70	8.93	4,550	3,173	70,899	70,064
2014-05-19	$116.37	$90.00	15.1%	5.0%	14.1%	16.3%	19.2%	2.0%	-0.1%	11.4M	-177.9M	-2.4M	0.61	9.30	4,322	2,656	68,395	65,616
2014-05-20	$115.13	$90.00	15.0%	5.0%	14.6%	16.1%	19.6%	1.7%	-0.0%	5.2M	-120.6M	-2.5M	0.50	9.59	4,463	2,245	70,566	66,715
2014-05-21	$114.52	$90.00	15.0%	5.0%	14.2%	15.6%	17.9%	1.9%	-0.1%	-401.2K	-78.3M	-2.4M	1.16	11.52	2,842	3,308	72,736	67,573
2014-05-22	$114.73	$90.00	14.8%	5.0%	14.2%	14.1%	17.7%	1.9%	-0.1%	1.7M	-93.0M	-2.4M	0.51	11.59	3,974	2,012	73,900	68,989
2014-05-23	$114.94	$90.00	14.4%	5.0%	14.2%	11.3%	17.4%	1.8%	0.1%	16.5M	-106.7M	-2.4M	0.40	10.29	3,415	1,349	74,760	69,722
2014-05-27	$113.87	$90.00	15.0%	4.9%	14.5%	15.9%	17.7%	1.6%	-0.3%	-4.9M	-53.6M	-2.4M	1.38	9.98	4,558	6,275	71,489	66,793
2014-05-28	$114.24	$90.00	14.3%	4.9%	14.5%	10.8%	17.1%	1.4%	-0.3%	-3.7M	-75.9M	-2.4M	0.96	11.62	12,383	11,839	73,038	69,128
2014-05-29	$114.14	$90.00	11.9%	4.8%	14.5%	0.0%	17.2%	1.3%	-0.1%	-9.5M	-68.0M	-2.4M	0.60	11.72	14,490	8,725	78,806	74,844
2014-05-30	$116.02	$90.00	11.6%	4.9%	15.7%	0.0%	18.3%	1.1%	0.1%	35.0M	-205.9M	-2.4M	0.67	11.23	10,621	7,137	79,757	76,258