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As of today, Allergan PLC's current share price is $303.74. Allergan PLC's E10 for the quarter that ended in Jun. 2015 was $-1.39. Allergan PLC's Shiller P/E Ratio for today is .
During the past 13 years, Allergan PLC's highest Shiller P/E Ratio was 413.29. The lowest was 0.00. And the median was 64.39.
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.
Allergan PLC's adjusted earnings per share data for the three months ended in Jun. 2015 was $-0.800. 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 $-1.39 for the trailing six years ended in Jun. 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.
Allergan PLC's Shiller P/E Ratio for today is calculated as
|Shiller P/E Ratio||=||Share Price||/||E10|
Allergan PLC's E10 for the fiscal year that ended in Dec14 is calculated as:
For example, Allergan PLC's adjusted earnings per share data for the three months ended in Jun. 2015 was:
|Adj_EPS||=||Earnigns per Share||/||CPI of Jun. 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 = 238.662.
Allergan PLC Quarterly Data
|per share eps||-0.790||-4.270||0.490||-0.852||0.550||0.280||-3.950||-2.759||-1.850||-0.800|
|per share eps||0.210||0.146||0.360||0.420||0.540||0.748||0.430||-0.490||0.600||0.214|
|per share eps||0.550||0.511||0.570||0.570|
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.
Allergan PLC Annual Data
Allergan PLC Quarterly Data