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Arch Coal Inc (NYSE:ACI)
Shiller P/E Ratio
(As of Today)

As of today, Arch Coal Inc's current share price is \$1.11. Arch Coal Inc's E10 for the quarter that ended in Sep. 2015 was \$-11.46. Arch Coal Inc's Shiller P/E Ratio for today is .

ACI' s 10-Year Shiller P/E Ratio Range
Min: 6.16   Max: 746.38
Current: 0

6.16
746.38

During the past 13 years, Arch Coal Inc's highest Shiller P/E Ratio was 746.38. The lowest was 6.16. And the median was 25.92.

ACI's Shiller P/E Ratiois ranked lower than
447% of the 34 Companies
in the Global Coal industry.

( Industry Median: 11.36 vs. ACI: 0.00 )

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.

Arch Coal Inc's adjusted earnings per share data for the three months ended in Sep. 2015 was \$-93.910. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is \$-11.46 for the trailing ten years ended in Sep. 2015.

Definition

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.

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

 Shiller P/E Ratio = Share Price / E10 = 1.11 / -11.46 =

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

Arch Coal Inc's E10 for the fiscal year that ended in Dec14 is calculated as:

For example, Arch Coal Inc's adjusted earnings per share data for the three months ended in Sep. 2015 was:

 Adj_EPS = Earnigns per Share / CPI of Sep. 2015 (Change) * Current CPI (Sep. 2015) = -93.91 / 237.945 * 237.945 = -93.910

Current CPI (Sep. 2015) = 237.945.

Arch Coal Inc Quarterly Data

 201306 201309 201312 201403 201406 201409 201412 201503 201506 201509 per share eps -3.4 -6.1 -17.499 -5.9 -4.6 -4.58 -11.314 -5.3 -7.9 -93.91 CPI 233.504 234.149 233.049 236.293 238.343 238.031 234.812 236.119 238.638 237.945 Adj_EPS -3.465 -6.199 -17.867 -5.941 -4.592 -4.578 -11.465 -5.341 -7.877 -93.91 201012 201103 201106 201109 201112 201203 201206 201209 201212 201303 per share eps 2.925 3.4 0.4 0.4 3.342 0.1 -20.5 2.2 -14.086 -3.3 CPI 219.179 223.467 225.722 226.889 225.672 229.392 229.478 231.407 229.601 232.773 Adj_EPS 3.175 3.62 0.422 0.419 3.524 0.104 -21.256 2.262 -14.598 -3.373 200806 200809 200812 200903 200906 200909 200912 201003 201006 201009 per share eps 7.8 6.8 4.356 2.1 -1.1 1.6 0.094 -0.1 4.1 2.9 CPI 218.815 218.783 210.228 212.709 215.693 215.969 215.949 217.631 217.965 218.439 Adj_EPS 8.482 7.396 4.93 2.349 -1.213 1.763 0.104 -0.109 4.476 3.159 200512 200603 200606 200609 200612 200703 200706 200709 200712 200803 per share eps -0.086 4.2 4.8 3.5 5.536 2 2.6 1.9 5.635 5.6 CPI 196.8 199.8 202.9 202.9 201.8 205.352 208.352 208.49 210.036 213.528 Adj_EPS -0.104 5.002 5.629 4.105 6.528 2.317 2.969 2.168 6.384 6.24

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

Explanation

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

Historical Data

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

Arch Coal Inc Annual Data

 Dec05 Dec06 Dec07 Dec08 Dec09 Dec10 Dec11 Dec12 Dec13 Dec14 ShillerPE 0.00 0.00 0.00 163.96 31.30 41.47 15.55 11.76 13.90 0.00

Arch Coal Inc Quarterly Data

 Jun13 Sep13 Dec13 Mar14 Jun14 Sep14 Dec14 Mar15 Jun15 Sep15 ShillerPE 6.38 7.90 13.90 25.03 26.47 25.82 0.00 0.00 0.00 0.00
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