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As of today, SunPower Corp's current share price is $20.14. SunPower Corp's E10 for the quarter that ended in Dec. 2015 was $-0.85. 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 Dec. 2015 was $-0.934. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $-0.85 for the trailing ten years ended in Dec. 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 Dec15 is calculated as:
For example, SunPower Corp's adjusted earnings per share data for the three months ended in Dec. 2015 was:
|Adj_EPS||=||Earnigns per Share||/||CPI of Dec. 2015 (Change)||*||Current CPI (Dec. 2015)|
Current CPI (Dec. 2015) = 236.525.
SunPower Corp Quarterly Data
|per share eps||0.730||0.148||0.420||0.090||0.200||0.774||-0.070||0.040||-0.410||-0.934|
|per share eps||-0.020||-1.510||-3.770||-0.943||-0.670||-0.710||-0.410||-1.215||-0.460||0.150|
|per share eps||0.290||-2.310||-0.120||0.150||0.200||0.089||0.130||-0.070||0.210||1.148|
|per share eps||0.000||0.080||0.130||0.153||0.020||-0.070||0.100||0.059||0.140||0.370|
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