Securities and Exchange Commission

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum

The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

Compare To Other Companies

Annual (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.544	2012-09-25	10-K	2012	FY	2009-08-01	2010-07-31	CY2010
0.461	2013-09-27	10-K	2013	FY	2010-08-01	2011-07-31	CY2011
0.464	2014-09-17	10-K	2014	FY	2011-08-01	2012-07-31	CY2012
0.487	2015-09-17	10-K	2015	FY	2012-08-01	2013-07-31	CY2013
0.462	2016-09-15	10-K	2016	FY	2013-08-01	2014-07-31	CY2014
0.451	2017-09-20	10-K	2017	FY	2014-08-01	2015-07-31	CY2015
0.388	2017-09-20	10-K	2017	FY	2015-08-01	2016-07-31	CY2016

Quarterly (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.458	2015-03-03	10-Q	2015	Q2	2013-11-01	2014-01-31	CY2013Q4
0.423	2015-06-03	10-Q	2015	Q3	2014-02-01	2014-04-30	CY2014Q1
0.451	2015-12-02	10-Q	2016	Q1	2014-08-01	2014-10-31	CY2014Q3
0.394	2016-06-02	10-Q	2016	Q3	2015-02-01	2015-04-30	CY2015Q1
0.388	2015-12-02	10-Q	2016	Q1	2015-08-01	2015-10-31	CY2015Q3

All Reported Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.544	2012-09-25	10-K	2012	FY	2009-08-01	2010-07-31	CY2010
0.461	2013-09-27	10-K	2013	FY	2010-08-01	2011-07-31	CY2011
0.464	2014-09-17	10-K	2014	FY	2011-08-01	2012-07-31	CY2012
0.487	2015-09-17	10-K	2015	FY	2012-08-01	2013-07-31	CY2013
0.487	2014-09-17	10-K	2014	FY	2012-08-01	2013-07-31
0.462	2015-03-03	10-Q	2015	Q2	2013-08-01	2014-01-31
0.458	2015-03-03	10-Q	2015	Q2	2013-11-01	2014-01-31	CY2013Q4
0.462	2015-06-03	10-Q	2015	Q3	2013-08-01	2014-04-30
0.423	2015-06-03	10-Q	2015	Q3	2014-02-01	2014-04-30	CY2014Q1
0.462	2016-09-15	10-K	2016	FY	2013-08-01	2014-07-31	CY2014
0.462	2015-09-17	10-K	2015	FY	2013-08-01	2014-07-31
0.462	2014-09-17	10-K	2014	FY	2013-08-01	2014-07-31
0.451	2015-12-02	10-Q	2016	Q1	2014-08-01	2014-10-31	CY2014Q3
0.451	2016-03-02	10-Q	2016	Q2	2014-08-01	2015-01-31
0.451	2015-03-03	10-Q	2015	Q2	2014-08-01	2015-01-31
0.451	2016-06-02	10-Q	2016	Q3	2014-08-01	2015-04-30
0.451	2015-06-03	10-Q	2015	Q3	2014-08-01	2015-04-30
0.394	2016-06-02	10-Q	2016	Q3	2015-02-01	2015-04-30	CY2015Q1
0.394	2015-06-03	10-Q	2015	Q3	2015-02-01	2015-04-30
0.451	2017-09-20	10-K	2017	FY	2014-08-01	2015-07-31	CY2015
0.451	2016-09-15	10-K	2016	FY	2014-08-01	2015-07-31
0.451	2015-09-17	10-K	2015	FY	2014-08-01	2015-07-31
0.388	2015-12-02	10-Q	2016	Q1	2015-08-01	2015-10-31	CY2015Q3
0.388	2016-03-02	10-Q	2016	Q2	2015-08-01	2016-01-31
0.388	2016-06-02	10-Q	2016	Q3	2015-08-01	2016-04-30
0.388	2017-09-20	10-K	2017	FY	2015-08-01	2016-07-31	CY2016
0.388	2016-09-15	10-K	2016	FY	2015-08-01	2016-07-31