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As of today, Dell Inc's current share price is $13.86. Dell Inc's E10 for the quarter that ended in Jul. 2013 was $1.30. Dell Inc's Shiller P/E Ratio for today is 10.66.
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.
Dell Inc's adjusted earnings per share data for the three months ended in Jul. 2013 was $0.123. 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 $1.30 for the trailing six years ended in Jul. 2013.
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.
Dell Inc's Shiller P/E Ratio for today is calculated as
|Shiller P/E Ratio||=||Share Price||/||E10|
Dell Inc's E10 for the fiscal year that ended in Jan13 is calculated as:
For example, Dell Inc's adjusted earnings per share data for the three months ended in Jul. 2013 was:
|Adj_EPS||=||Earnigns per Share||/||CPI of Jul. 2013||*||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 = 238.709.
Dell Inc Quarterly Data
|per share eps||0.490||0.480||0.490||0.427||0.360||0.420||0.270||0.303||0.070||0.120|
|per share eps||0.370||0.180||0.150||0.240||0.170||0.169||0.170||0.280||0.420||0.479|
|per share eps||0.340||0.308||0.380||0.310|
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.
Dell Inc Annual Data
Dell Inc Quarterly Data