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AutoZone Inc (NYSE:AZO)
Shiller P/E Ratio
35.55 (As of Today)

As of today, AutoZone Inc's current share price is $765.75. AutoZone Inc's E10 for the quarter that ended in Feb. 2016 was $21.54. AutoZone Inc's Shiller P/E Ratio for today is 35.55.

AZO' s Shiller P/E Ratio Range Over the Past 10 Years
Min: 15.05   Max: 38.66
Current: 35.55


During the past 13 years, AutoZone Inc's highest Shiller P/E Ratio was 38.66. The lowest was 15.05. And the median was 28.79.

AZO's Shiller P/E Ratio is ranked lower than
75% of the 235 Companies
in the Global Specialty Retail industry.

( Industry Median: 19.24 vs. AZO: 35.55 )

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

AutoZone Inc's adjusted earnings per share data for the three months ended in Feb. 2016 was $7.430. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $21.54 for the trailing ten years ended in Feb. 2016.


For the Shiller P/E, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

AutoZone Inc's Shiller P/E Ratio for today is calculated as

Shiller P/E Ratio=Share Price/E10

* All numbers are in millions except for per share data and ratio. All numbers are in their own currency.

AutoZone Inc's E10 for the fiscal year that ended in Aug15 is calculated as:

For example, AutoZone Inc's adjusted earnings per share data for the three months ended in Feb. 2016 was:

Adj_EPS=Earnigns per Share/CPI of Feb. 2016 (Change)*Current CPI (Feb. 2016)

Current CPI (Feb. 2016) = 237.111.

AutoZone Inc Quarterly Data

per share eps 6.2905.6308.46011.3667.2706.5109.57012.8488.2907.430
CPI 233.069234.781237.900237.852236.151234.722237.805238.316237.336237.111
Adj_EPS 6.3995.6868.43211.3317.3006.5769.54212.7838.2827.430
per share eps 5.2907.2744.6804.1506.2808.5635.4104.7807.27010.516
CPI 225.964226.545226.230227.663229.815230.379230.221232.166232.945233.877
Adj_EPS 5.5517.6134.9054.3226.4798.8135.5724.8827.40010.661
per share eps 2.2302.0303.1304.5042.8202.4604.1205.7273.7703.340
CPI 212.425212.193213.856215.834216.330216.741218.178218.312218.803221.309
Adj_EPS 2.4892.2683.4704.9483.0912.6914.4786.2204.0853.578
per share eps 1.8902.9551.7301.4502.1703.2692.0201.6702.4903.898
CPI 202.500203.900201.500203.499207.949207.917210.177211.693216.632219.086
Adj_EPS 2.2133.4362.0361.6892.4743.7282.2791.8712.7254.219

Add all the adjusted EPS together and divide 10 will get our E10.


Compared with the regular P/E ratio, which works poorly for cyclical businesses, the Shiller P/E smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller P/E should give similar results to regular P/E.

Compared with the P/S ratio, the Shiller P/E makes the comparison between different industries more meaningful.

Be Aware

The Shiller P/E assumes that over the long term, businesses and profitability revert to their means. If a company’s business model does not work in the future compared with the past, the Shiller P/E and P/S ratio will give false valuations.

Related Terms

P/E Ratio, P/B Ratio, P/S Ratio, Price-to-Free-Cash-Flow ratio, E10

Historical Data

* All numbers are in millions except for per share data and ratio. All numbers are in their own currency.

AutoZone Inc Annual Data

ShillerPE 20.5024.1622.4121.0524.9829.1928.9828.2430.7235.29

AutoZone Inc Quarterly Data

ShillerPE 30.1134.1631.8630.7232.2635.2334.8435.2937.7935.96
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