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As of today, PowerShares QQQ Trust, Series 1 (ETF)'s current share price is $103.67. PowerShares QQQ Trust, Series 1 (ETF)'s E10 for the quarter that ended in . 20 was $0.00. PowerShares QQQ Trust, Series 1 (ETF)'s Shiller P/E Ratio for today is 0.00.
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.
PowerShares QQQ Trust, Series 1 (ETF)'s adjusted earnings per share data of for the fiscal year that ended in . 20 was $. 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 $0.00 for the trailing six years ended in . 20.
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.
PowerShares QQQ Trust, Series 1 (ETF)'s Shiller P/E Ratio for today is calculated as
|Shiller P/E Ratio||=||Share Price||/||E10|
PowerShares QQQ Trust, Series 1 (ETF)'s E10 for the quarter that ended in . 20 is calculated as:
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.
PowerShares QQQ Trust, Series 1 (ETF) Annual Data
PowerShares QQQ Trust, Series 1 (ETF) Semi-Annual Data