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Power-One, Inc. (NAS:PWER)
Shiller P/E Ratio
(As of Today)

As of today, Power-One, Inc.'s current share price is \$6.34. Power-One, Inc.'s E10 for the quarter that ended in Mar. 2013 was \$0.00. Power-One, Inc.'s Shiller P/E Ratio for today is .

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.

Power-One, Inc.'s adjusted earnings per share data for the three months ended in Mar. 2013 was \$-0.060. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is \$0.00 for the trailing ten years ended in Mar. 2013.

Definition

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.

Power-One, Inc.'s Shiller P/E Ratio for today is calculated as

 Shiller P/E Ratio = Share Price / E10 = 6.34 / 0.00 =

* All numbers are in millions except for per share data and ratio. All numbers are in their own currency.

Power-One, Inc.'s E10 for the fiscal year that ended in Dec12 is calculated as:

For example, Power-One, Inc.'s adjusted earnings per share data for the three months ended in Mar. 2013 was:

 Adj_EPS = Earnigns per Share / CPI of Mar. 2013 (Change) * Current CPI (Mar. 2013) = -0.06 / 232.773 * 232.773 = -0.060

Current CPI (Mar. 2013) = 232.773.

Power-One, Inc. Quarterly Data

 201012 201103 201106 201109 201112 201203 201206 201209 201212 201303 per share eps 0.378 0.2 0.21 0.27 0.24 0.03 0.3 0.13 -0.141 -0.06 CPI 219.179 223.467 225.722 226.889 225.672 229.392 229.478 231.407 229.601 232.773 Adj_EPS 0.401 0.208 0.217 0.277 0.248 0.03 0.304 0.131 -0.143 -0.06 200806 200809 200812 200903 200906 200909 200912 201003 201006 201009 per share eps -0.04 -0.02 0.02 -0.7 -0.08 -0.03 0.07 0.04 0.17 0.4 CPI 218.815 218.783 210.228 212.709 215.693 215.969 215.949 217.631 217.965 218.439 Adj_EPS -0.043 -0.021 0.022 -0.766 -0.086 -0.032 0.075 0.043 0.182 0.426 200512 200603 200606 200609 200612 200703 200706 200709 200712 200803 per share eps 0.04 -0.06 0.04 0.01 -0.17 -0.14 -0.13 -0.07 -0.08 -0.16 CPI 196.8 199.8 202.9 202.9 201.8 205.352 208.352 208.49 210.036 213.528 Adj_EPS 0.047 -0.07 0.046 0.011 -0.196 -0.159 -0.145 -0.078 -0.089 -0.174 200306 200309 200312 200403 200406 200409 200412 200503 200506 200509 per share eps -0.01 -0.04 -0.12 -0.03 -0.05 -0.06 -0.11 -0.34 -0.17 0.02 CPI 183.7 185.2 184.3 187.4 189.7 189.9 190.3 193.3 194.5 198.8 Adj_EPS -0.013 -0.05 -0.152 -0.037 -0.061 -0.074 -0.135 -0.409 -0.203 0.023

Add all the adjusted EPS together and divide 10 will get our E10.

Explanation

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.

Be Aware

The Shiller P/E assumes that over the long term, businesses and profitability revert to their means. If a companys business model does not work in the future compared with the past, the Shiller P/E and P/S ratio will give false valuations.

Related Terms

Historical Data

* All numbers are in millions except for per share data and ratio. All numbers are in their own currency.

Power-One, Inc. Annual Data

 Dec03 Dec04 Dec05 Dec06 Dec07 Dec08 Dec09 Dec10 Dec11 Dec12 ShillerPE -14.90 -10.95 -6.30 -6.66 -5.16 -3.93 -10.99 -75.68 80.07 29.80

Power-One, Inc. Quarterly Data

 Dec10 Mar11 Jun11 Sep11 Dec11 Mar12 Jun12 Sep12 Dec12 Mar13 ShillerPE -75.68 -294.53 169.19 273.24 80.07 69.17 41.75 43.26 29.80 26.60
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