COST Options History — August 2014

In August 2014, COST traded between $117.80 and $121.62. ATM implied volatility averaged 12.2%, placing in the 7.7% IV rank vs the trailing year. The 30-day expected move averaged 4.6%. IV traded above realized volatility by 1.0% (HV 20d: 11.2%). Max pain ranged from $95.00 to $120.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 10 of 21 days. Put/call ratio averaged 0.81.

Notable Days

2014-08-06: Highest Volume — 17,916 contracts
2014-08-13: Largest IV drop — 8.5% change
2014-08-07: Highest IV Rank — 19.4%
2014-08-05: Largest Expected Move — 4.9%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$119.76	$117.80	$121.62	$117.88	$121.08
Max Pain	$104.25	$95.00	$120.00	$95.00	$120.00
ATM IV	12.2%	10.7%	14.2%	13.4%	10.9%
Expected Move	4.6%	4.3%	4.9%	4.8%	4.3%
HV 20d	11.2%	9.2%	12.3%	9.7%	10.2%
HV 60d	10.1%	9.2%	11.1%	11.1%	9.2%
IV Rank	7.7%	0.0%	19.4%	14.1%	1.3%
IV Percentile	11.6%	0.0%	31.7%	22.2%	0.8%
Term Structure	0.0%	-0.9%	0.8%	0.2%	-0.0%
VWIV	17.2%	13.8%	27.6%	18.4%	27.6%
Skew 25d	1.9%	1.0%	2.6%	1.5%	1.8%
Skew 10d	3.7%	2.4%	6.8%	3.1%	3.2%
Call IV 25d	11.7%	10.4%	13.4%	12.9%	10.6%
Put IV 25d	13.5%	11.6%	15.7%	14.4%	12.4%
Bid-Ask Spread %	21.74	17.04	30.32	22.21	28.86
Gamma HHI	0.21	0.15	0.30	0.26	0.17
Net GEX	39.5M	29.7M	48.4M	45.2M	36.2M
Net DEX	-352.4M	-483.1M	-276.0M	-281.8M	-343.8M
Net VEX	-2.1M	-2.3M	-1.9M	-2.2M	-1.9M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.81	0.25	1.66	0.96	0.55
Total Volume	7,948.286	2,614	17,916	8,873	2,958
Total OI	142,264	133,760	151,042	137,888	151,042

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
2014-08-01	$117.88	$95.00	13.4%	4.8%	9.7%	14.1%	18.4%	1.5%	0.2%	45.2M	-281.8M	-2.2M	0.96	22.21	4,530	4,343	85,368	52,520
2014-08-04	$118.15	$95.00	13.7%	4.8%	9.7%	16.0%	17.5%	2.5%	-0.2%	35.6M	-287.4M	-2.2M	0.44	21.13	2,971	1,319	83,778	51,877
2014-08-05	$118.05	$95.00	13.6%	4.9%	9.2%	15.9%	16.9%	2.6%	0.3%	35.0M	-282.6M	-2.3M	0.32	19.81	4,002	1,289	84,733	52,365
2014-08-06	$119.59	$95.00	13.6%	4.9%	10.1%	15.6%	16.7%	1.8%	-0.1%	43.1M	-399.7M	-2.3M	0.41	17.72	12,679	5,237	86,818	52,744
2014-08-07	$117.80	$95.00	14.2%	4.9%	11.6%	19.4%	20.9%	2.3%	-0.4%	43.6M	-276.0M	-2.3M	0.58	17.14	5,995	3,502	89,926	55,150
2014-08-08	$119.16	$95.00	13.6%	4.9%	12.3%	15.5%	18.1%	2.6%	0.5%	48.4M	-404.6M	-2.2M	0.30	17.92	11,273	3,416	91,496	56,730
2014-08-11	$119.18	$95.00	13.5%	4.9%	12.1%	15.1%	18.2%	2.2%	-0.2%	42.5M	-354.0M	-2.2M	1.34	17.43	2,066	2,768	85,509	52,721
2014-08-12	$119.01	$95.00	13.4%	4.9%	12.0%	14.3%	17.9%	2.2%	-0.6%	42.0M	-336.0M	-2.2M	1.66	19.79	1,108	1,835	86,005	53,691
2014-08-13	$118.64	$95.00	12.2%	4.8%	12.1%	7.2%	17.7%	2.1%	-0.2%	39.5M	-294.1M	-2.1M	1.03	18.79	2,920	3,020	86,115	54,792
2014-08-14	$119.26	$95.00	12.0%	4.8%	11.7%	6.0%	19.0%	2.0%	-0.5%	44.7M	-330.8M	-2.1M	1.40	17.04	2,672	3,730	84,156	55,532
2014-08-15	$118.57	$95.00	12.3%	4.8%	11.6%	7.4%	17.7%	2.2%	-0.9%	29.7M	-276.4M	-2.1M	1.07	19.21	6,132	6,533	84,504	57,310
2014-08-18	$119.46	$0.00	11.6%	4.4%	11.6%	3.0%	16.1%	1.6%	0.8%	35.3M	-314.1M	-2.0M	0.64	25.33	5,279	3,364	78,910	54,850
2014-08-19	$120.61	$100.00	10.9%	4.3%	12.0%	0.0%	16.5%	1.5%	0.7%	35.6M	-399.3M	-2.0M	0.54	22.84	6,011	3,252	81,825	56,591
2014-08-20	$120.91	$115.00	10.9%	4.4%	12.0%	0.2%	14.8%	1.2%	0.5%	36.3M	-433.9M	-2.0M	0.52	24.27	8,442	4,366	83,959	58,590
2014-08-21	$121.62	$115.00	10.7%	4.4%	12.0%	0.0%	14.4%	1.0%	0.3%	39.6M	-483.1M	-2.0M	0.25	27.00	5,900	1,489	86,516	61,589
2014-08-22	$121.29	$115.00	10.9%	4.3%	11.9%	1.3%	14.6%	1.6%	0.1%	42.3M	-464.5M	-2.0M	0.27	21.73	6,757	1,846	87,486	62,198
2014-08-25	$121.39	$115.00	11.0%	4.3%	11.7%	1.9%	15.4%	1.6%	0.1%	41.5M	-382.8M	-1.9M	1.20	22.57	3,953	4,757	79,900	60,823
2014-08-26	$121.09	$120.00	11.0%	4.3%	10.7%	2.1%	15.2%	1.8%	-0.1%	41.1M	-356.8M	-1.9M	1.09	22.93	2,336	2,553	79,695	63,939
2014-08-27	$121.24	$120.00	11.1%	4.3%	10.4%	2.7%	13.8%	1.4%	0.0%	41.1M	-361.4M	-1.9M	1.59	22.52	2,977	4,720	79,770	65,793
2014-08-28	$120.97	$120.00	11.3%	4.3%	10.2%	3.7%	14.7%	1.3%	-0.0%	32.3M	-336.2M	-1.9M	0.89	30.32	1,383	1,231	81,010	69,218
2014-08-29	$121.08	$120.00	10.9%	4.3%	10.2%	1.3%	27.6%	1.8%	-0.0%	36.2M	-343.8M	-1.9M	0.55	28.86	1,911	1,047	81,325	69,717