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Rio Tinto PLC (NYSE:RIO)
Shiller P/E Ratio
21.20 (As of Today)

As of today, Rio Tinto PLC's current share price is $58.42. Rio Tinto PLC's E10 for the quarter that ended in Dec. 2013 was $2.77. Rio Tinto PLC's Shiller P/E Ratio for today is 21.20.

RIO' s 10-Year Shiller P/E Ratio Range
Min: 4.5   Max: 48.03
Current: 21.2

4.5
48.03

During the past 13 years, Rio Tinto PLC's highest Shiller P/E Ratio was 48.03. The lowest was 4.50. And the median was 19.01.

RIO's Shiller P/E Ratiois ranked higher than
95% of the 2632 Companies
in the Global Industrial Metals & Minerals industry.

( Industry Median: 9999.00 vs. RIO: 21.20 )

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.

Rio Tinto PLC's adjusted earnings per share data of for the fiscal year that ended in Dec13 was $2.028. Since most companies do not have as long as 10 years history, here we use 6 years to calculate. Add all the adjusted EPS for the past 6 years together and divide 6 will get our E10, which is $2.77 for the trailing six years ended in Dec13.


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.

Rio Tinto PLC's Shiller P/E Ratio for today is calculated as

Shiller P/E Ratio=Share Price/E10
=58.42/2.77
=21.09

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

Rio Tinto PLC's E10 for the quarter that ended in Dec. 2013 is calculated as:

For example, Rio Tinto PLC's adjusted earnings per share data for the fiscal year that ended in Dec13 was:

Adj_EPS=Earnigns per Share/CPI of Dec13*CPI of Current
=1.973/233.049*239.556
=2.028

Since most companies do not have as long as 10 years history, here we use 6 years to calculate:

Current CPI = 239.556.

Rio Tinto PLC Annual Data

200812200912201012201112201212201312
per share eps 2.3312.7537.2183.015-1.61.973
CPI 210.228215.949219.179225.672229.601233.049
Adj_EPS 2.6563.0547.8893.200-1.7092.028

Add all the adjusted EPS together and divide 6 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

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.

Rio Tinto PLC Annual Data

Dec04Dec05Dec06Dec07Dec08Dec09Dec10Dec11Dec12Dec13
ShillerPE 24.0826.3921.3431.796.1613.5714.9710.4316.8420.39

Rio Tinto PLC Semi-Annual Data

Jun09Dec09Jun10Dec10Jun11Dec11Jun12Dec12Jun13Dec13
ShillerPE 0.0013.570.0014.970.0010.430.0016.840.0020.39
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