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As of today, SunPower Corp's current share price is $22.05. SunPower Corp's E10 for the quarter that ended in Sep. 2015 was $-0.76. SunPower Corp's Shiller P/E Ratio for today is .
During the past 13 years, SunPower Corp's highest Shiller P/E Ratio was 1084.50. The lowest was 0.00. And the median was 842.50.
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.
SunPower Corp's adjusted earnings per share data for the three months ended in Sep. 2015 was $-0.410. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $-0.76 for the trailing ten years ended in Sep. 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.
SunPower Corp's Shiller P/E Ratio for today is calculated as
|Shiller P/E Ratio||=||Share Price||/||E10|
SunPower Corp's E10 for the fiscal year that ended in Dec14 is calculated as:
For example, SunPower Corp'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)|
Current CPI (Sep. 2015) = 237.945.
SunPower Corp Quarterly Data
|per share eps||0.150||0.730||0.150||0.420||0.090||0.200||0.830||-0.070||0.040||-0.410|
|per share eps||1.480||-0.020||-1.510||-3.770||-0.940||-0.670||-0.710||-0.410||-1.230||-0.460|
|per share eps||0.370||0.290||-2.350||-0.120||0.150||0.200||0.090||0.130||-0.070||0.210|
|per share eps||0.250||0.000||0.080||0.130||0.150||0.020||-0.070||0.100||0.060||0.140|
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.
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.
SunPower Corp Annual Data
SunPower Corp Quarterly Data