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AutoZone Inc (NYSE:AZO)
Shiller PE Ratio
19.50 (As of Today)

As of today, AutoZone Inc's current share price is $511.01. AutoZone Inc's E10 for the quarter that ended in May. 2017 was $26.20. AutoZone Inc's Shiller P/E Ratio for today is 19.50.

AZO' s Shiller PE Ratio Range Over the Past 10 Years
Min: 15.08   Max: 39.06
Current: 19.51


During the past 13 years, AutoZone Inc's highest Shiller P/E Ratio was 39.06. The lowest was 15.08. And the median was 29.09.

AZO's Shiller PE Ratio is ranked lower than
55% of the 255 Companies
in the Global Specialty Retail industry.

( Industry Median: 18.75 vs. AZO: 19.51 )

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 May. 2017 was $11.440. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $26.20 for the trailing ten years ended in May. 2017.


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 local exchange's currency.

AutoZone Inc's E10 for the fiscal year that ended in Aug16 is calculated as:

For example, AutoZone Inc's adjusted earnings per share data for the three months ended in May. 2017 was:

Adj_EPS=Earnigns per Share/CPI of May. 2017 (Change)*Current CPI (May. 2017)

Current CPI (May. 2017) = 244.733.

AutoZone Inc Quarterly Data

per share eps 6.5109.57012.7008.2907.43010.77014.2409.3608.08011.440
CPI 234.722237.805238.316237.336237.111240.229240.849241.353243.603244.733
Adj_EPS 6.7889.84913.0428.5487.66910.97214.4709.4918.11711.440
per share eps 8.4005.4104.7807.27010.3506.2905.6308.46011.2307.270
CPI 230.379230.221232.166232.945233.877233.069234.781237.900237.852236.151
Adj_EPS 8.9235.7515.0397.63810.8306.6055.8698.70311.5557.534
per share eps 2.4604.1205.6003.7703.3405.2907.1204.6804.1506.280
CPI 216.741218.178218.312218.803221.309225.964226.545226.230227.663229.815
Adj_EPS 2.7784.6216.2784.2173.6945.7297.6925.0634.4616.688
per share eps 3.2002.0201.6702.4903.8502.2302.0303.1304.3702.820
CPI 207.917210.177211.693216.632219.086212.425212.193213.856215.834216.330
Adj_EPS 3.7672.3521.9312.8134.3012.5692.3413.5824.9553.190

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 local exchange's currency.

AutoZone Inc Annual Data

ShillerPE 24.1722.4721.1225.1429.4328.9628.5531.0735.6631.60

AutoZone Inc Quarterly Data

ShillerPE 35.2635.2135.6637.8136.3234.0531.6032.0629.1023.13
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