GOOG Options History — April 2011

In April 2011, GOOG traded between $13.03 and $14.78. ATM implied volatility averaged 29.2%, placing in the 26.6% IV rank vs the trailing year. The 30-day expected move averaged 6.8%. IV traded above realized volatility by 1.4% (HV 20d: 27.7%). Max pain ranged from $13.61 to $14.49. Net GEX was positive for 13 of 20 trading days. Term structure was in contango for 10 of 20 days. Put/call ratio averaged 0.75.

Notable Days

2011-04-15: Highest Volume — 15,990,240 contracts
2011-04-14: Largest IV drop — 55.0% change
2011-04-13: Highest IV Rank — 100.0%
2011-04-01: Largest Expected Move — 8.9%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$13.85	$13.03	$14.78	$14.78	$13.59
Max Pain	$14.08	$13.61	$14.49	$14.49	$13.61
ATM IV	29.2%	15.9%	65.1%	19.0%	15.9%
Expected Move	6.8%	4.5%	8.9%	8.9%	4.5%
HV 20d	27.7%	18.2%	36.7%	18.8%	35.3%
HV 60d	22.1%	18.3%	25.6%	18.3%	24.8%
IV Rank	26.6%	0.0%	100.0%	5.4%	0.0%
IV Percentile	42.2%	0.0%	100.0%	8.7%	0.0%
Term Structure	0.0%	-5.8%	3.2%	-5.8%	3.2%
VWIV	23.9%	16.3%	30.9%	30.9%	16.3%
Skew 25d	2.5%	0.8%	4.2%	3.0%	0.8%
Skew 10d	4.5%	1.3%	7.1%	5.3%	1.6%
Call IV 25d	22.7%	16.1%	29.1%	29.1%	16.1%
Put IV 25d	25.2%	16.9%	32.1%	32.1%	16.9%
Bid-Ask Spread %	13.97	8.99	32.44	13.13	22.98
Gamma HHI	0.10	0.04	0.57	0.06	0.36
Net GEX	14.9M	-506.2M	330.2M	154.6M	330.2M
Net DEX	767.1M	-2.33B	5.56B	-2.33B	226.2M
Net VEX	-27.0M	-29.3M	-21.9M	-28.8M	-26.4M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.75	0.54	1.14	0.77	0.78
Total Volume	3,654,614	1,740,340	15,990,240	4,277,800	3,165,440
Total OI	17,634,012	15,685,780	21,034,260	16,142,920	18,765,500

Daily Data (20 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
2011-04-01	$14.78	$14.49	19.0%	8.9%	18.8%	5.4%	30.9%	3.0%	-5.8%	154.6M	-2.33B	-28.8M	0.77	13.13	2,419,820	1,857,980	8,610,320	7,532,600
2011-04-04	$14.68	$14.49	22.1%	7.4%	18.2%	11.8%	26.2%	2.7%	-1.3%	90.9M	-1.41B	-28.7M	0.82	15.77	1,476,040	1,204,440	8,421,020	7,283,080
2011-04-05	$14.21	$14.49	28.3%	8.0%	21.4%	24.8%	27.7%	3.5%	-1.9%	-26.5M	619.0M	-27.8M	0.88	13.14	2,944,460	2,582,420	8,736,680	7,597,020
2011-04-06	$14.34	$14.36	38.6%	7.8%	21.8%	46.5%	27.3%	3.5%	-1.5%	23.5M	-93.9M	-29.0M	0.72	12.49	1,695,420	1,224,860	9,522,720	8,220,180
2011-04-07	$14.49	$14.36	40.8%	7.8%	21.0%	51.0%	27.3%	3.5%	-1.6%	106.1M	-1.06B	-29.3M	0.54	9.23	1,689,880	911,280	9,813,480	8,398,840
2011-04-08	$14.44	$14.36	42.0%	8.0%	20.9%	53.6%	27.6%	3.6%	-1.6%	90.9M	-897.9M	-29.1M	0.83	8.99	1,515,440	1,260,500	10,006,280	8,472,900
2011-04-11	$14.42	$14.36	52.7%	8.4%	20.5%	75.9%	28.8%	3.3%	-2.5%	77.4M	-627.9M	-28.5M	0.74	12.49	1,129,800	832,000	9,471,940	7,865,420
2011-04-12	$14.25	$14.36	56.2%	8.4%	20.9%	83.2%	29.1%	3.6%	-2.1%	48.7M	20.4M	-28.0M	0.80	11.12	1,256,940	1,004,440	9,762,520	8,087,200
2011-04-13	$14.39	$14.36	65.1%	8.5%	19.5%	100.0%	29.3%	4.0%	-2.3%	94.3M	-743.9M	-28.3M	0.68	9.29	1,679,160	1,140,420	9,955,180	8,241,960
2011-04-14	$14.45	$14.36	29.3%	8.4%	19.4%	26.4%	29.5%	4.2%	-1.4%	110.7M	-986.8M	-28.2M	0.65	32.44	4,668,300	3,056,220	10,290,200	8,498,580
2011-04-15	$13.25	$14.36	22.6%	6.5%	36.7%	12.6%	22.7%	1.0%	1.1%	-506.2M	5.56B	-21.9M	1.14	15.33	7,456,520	8,533,720	11,666,060	9,368,200
2011-04-18	$13.16	$13.99	21.8%	6.2%	35.0%	11.1%	22.0%	2.0%	1.6%	-68.2M	2.66B	-25.2M	0.64	15.59	2,307,900	1,477,760	8,535,360	7,150,420
2011-04-19	$13.03	$13.74	20.6%	5.9%	35.0%	8.6%	20.7%	1.8%	2.1%	-64.9M	3.01B	-25.0M	0.56	9.84	1,360,440	766,640	9,211,840	7,535,040
2011-04-20	$13.13	$13.74	18.6%	5.3%	34.9%	4.6%	19.1%	1.5%	2.2%	-39.3M	2.62B	-25.5M	0.56	11.67	1,131,900	628,340	9,519,680	7,670,940
2011-04-21	$13.11	$13.74	18.3%	5.2%	34.6%	3.9%	18.8%	1.6%	2.6%	-233.7M	2.67B	-25.7M	0.83	10.04	1,339,340	1,115,560	9,745,140	7,782,340
2011-04-25	$13.11	$13.61	19.2%	5.5%	34.6%	5.7%	19.6%	1.3%	1.7%	-58.1M	2.46B	-25.3M	0.90	13.40	925,880	835,520	9,064,980	7,744,940
2011-04-26	$13.31	$13.61	18.1%	5.2%	35.3%	3.6%	18.8%	1.1%	2.6%	11.5M	1.51B	-26.3M	0.64	10.52	1,817,220	1,167,200	9,496,800	8,113,060
2011-04-27	$13.43	$13.61	17.1%	4.9%	35.2%	1.5%	18.0%	2.0%	2.8%	83.6M	1.05B	-26.7M	0.67	14.85	1,061,180	711,560	9,861,980	8,262,220
2011-04-28	$13.44	$13.61	16.9%	4.8%	35.2%	1.0%	17.8%	1.9%	2.8%	72.7M	1.08B	-26.7M	0.87	17.04	929,280	811,060	10,020,580	8,377,040
2011-04-29	$13.59	$13.61	15.9%	4.5%	35.3%	0.0%	16.3%	0.8%	3.2%	330.2M	226.2M	-26.4M	0.78	22.98	1,775,540	1,389,900	10,148,620	8,616,880