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CarMax Inc (NYSE:KMX)
Shiller PE Ratio
32.36 (As of Today)

As of today, CarMax Inc's current share price is $64.39. CarMax Inc's E10 for the quarter that ended in Feb. 2017 was $1.99. CarMax Inc's Shiller P/E Ratio for today is 32.36.

KMX' s Shiller PE Ratio Range Over the Past 10 Years
Min: 13.04   Max: 79.94
Current: 32.34


During the past 13 years, CarMax Inc's highest Shiller P/E Ratio was 79.94. The lowest was 13.04. And the median was 35.03.

KMX's Shiller PE Ratio is ranked lower than
53% of the 207 Companies
in the Global Auto & Truck Dealerships industry.

( Industry Median: 28.83 vs. KMX: 32.34 )

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.

CarMax Inc's adjusted earnings per share data for the three months ended in Feb. 2017 was $0.810. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $1.99 for the trailing ten years ended in Feb. 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.

CarMax 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.

CarMax Inc's E10 for the fiscal year that ended in Feb17 is calculated as:

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

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

Current CPI (Feb. 2017) = 243.603.

CarMax Inc Quarterly Data

per share eps 0.6000.6700.8600.8200.6300.7100.9000.8400.7200.810
CPI 236.151234.722237.805238.316237.336237.111240.229240.849241.353243.603
Adj_EPS 0.6190.6950.8810.8380.6470.7290.9130.8500.7270.810
per share eps 0.5200.4800.4100.4600.6400.6200.4700.4300.7600.700
CPI 229.815230.379230.221232.166232.945233.877233.069234.781237.900237.852
Adj_EPS 0.5510.5080.4340.4830.6690.6460.4910.4460.7780.717
per share eps 0.3300.3400.4400.4800.3600.3700.5400.4800.3600.410
CPI 216.330216.741218.178218.312218.803221.309225.964226.545226.230227.663
Adj_EPS 0.3720.3820.4910.5360.4010.4070.5820.5160.3880.439
per share eps 0.3000.2900.1400.1000.1300.060-0.1000.1700.1300.460
CPI 207.949207.917210.177211.693216.632219.086212.425212.193213.856215.834
Adj_EPS 0.3510.3400.1620.1150.1460.067-0.1150.1950.1480.519

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.

CarMax Inc Annual Data

ShillerPE 38.2418.1230.8243.4831.9034.6038.1945.3326.9032.42

CarMax Inc Quarterly Data

ShillerPE 39.6445.3345.5637.3034.3326.9029.8931.5729.9032.42
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