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As of today, Alcoa Inc's current share price is $13.22. Alcoa Inc's E10 for the quarter that ended in Mar. 2015 was $-0.27. Alcoa Inc's Shiller P/E Ratio for today is .
During the past 13 years, Alcoa Inc's highest Shiller P/E Ratio was 240.25. The lowest was 3.41. And the median was 19.37.
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.
Alcoa Inc's adjusted earnings per share data for the three months ended in Mar. 2015 was $0.140. 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 $-0.27 for the trailing six years ended in Mar. 2015.
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.
Alcoa Inc's Shiller P/E Ratio for today is calculated as
|Shiller P/E Ratio||=||Share Price||/||E10|
Alcoa Inc's E10 for the fiscal year that ended in Dec14 is calculated as:
For example, Alcoa Inc's adjusted earnings per share data for the three months ended in Mar. 2015 was:
|Adj_EPS||=||Earnigns per Share||/||CPI of Mar. 2015||*||CPI of Current|
Since most companies do not have as long as 10 years history, GuruFocus uses 6 years to do the calculation.
Current CPI = 236.818.
Alcoa Inc Quarterly Data
|per share eps||0.221||0.130||-0.110||0.020||-2.180||-0.160||0.120||0.120||0.131||0.140|
|per share eps||0.130||0.060||0.250||0.270||0.280||0.150||-0.180||0.090||0.000||-0.130|
|per share eps||-0.470||0.080||-0.284||-0.200|
Add all the adjusted EPS together and divide 6 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.
The Shiller P/E assumes that over the long term, businesses and profitability revert to their means. If a companys business model does not work in the future compared with the past, the Shiller P/E and P/S ratio will give false valuations.
Alcoa Inc Annual Data
Alcoa Inc Quarterly Data