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Quanta Services Inc (NYSE:PWR)
Shiller P/E Ratio
30.95 (As of Today)

As of today, Quanta Services Inc's current share price is $35.99. Quanta Services Inc's E10 for the quarter that ended in Jun. 2014 was $1.16. Quanta Services Inc's Shiller P/E Ratio for today is 30.95.

PWR' s 10-Year Shiller P/E Ratio Range
Min: 20.2   Max: 363.5
Current: 30.95

20.2
363.5

During the past 13 years, Quanta Services Inc's highest Shiller P/E Ratio was 363.50. The lowest was 20.20. And the median was 32.26.

PWR's Shiller P/E Ratiois ranked higher than
75% of the 1116 Companies
in the Global Engineering & Construction industry.

( Industry Median: 9999.00 vs. PWR: 30.95 )

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.

Quanta Services Inc's adjusted earnings per share data for the three months ended in Jun. 2014 was $0.371. 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 $1.16 for the trailing six years ended in Jun. 2014.


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.

Quanta Services Inc's Shiller P/E Ratio for today is calculated as

Shiller P/E Ratio=Share Price/E10
=35.99/1.16
=31.03

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

Quanta Services Inc's E10 for the fiscal year that ended in Dec13 is calculated as:

For example, Quanta Services Inc's adjusted earnings per share data for the three months ended in Jun. 2014 was:

Adj_EPS=Earnigns per Share/CPI of Jun. 2014*CPI of Current
=0.37/238.343*239.229
=0.371

Since most companies do not have as long as 10 years history, here we use 6 years to calculate:

Current CPI = 239.229.

Quanta Services Inc Quarterly Data

201203201206201209201212201303201306201309201312201403201406
per share eps 0.2200.3100.4500.4640.3400.3300.4300.7670.2500.370
CPI 229.392229.478231.407229.601232.773233.504234.149233.049236.293238.343
Adj_EPS 0.2290.3230.4650.4830.3490.3380.4390.7870.2530.371
200909200912201003201006201009201012201103201106201109201112
per share eps 0.3200.2100.1100.1600.3000.157-0.0800.1500.2500.315
CPI 215.969215.949217.631217.965218.439219.179223.467225.722226.889225.672
Adj_EPS 0.3540.2330.1210.1760.3290.171-0.0860.1590.2640.334
200809200812200903200906
per share eps 0.2800.2350.1100.170
CPI 218.783210.228212.709215.693
Adj_EPS 0.3060.2670.1240.189

Add all the adjusted EPS together and divide 6 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

P/E Ratio, P/B Ratio, P/S Ratio, Price-to-Free-Cash-Flow ratio, E10


Historical Data

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

Quanta Services Inc Annual Data

Dec04Dec05Dec06Dec07Dec08Dec09Dec10Dec11Dec12Dec13
ShillerPE 49.17330.03-111.67-111.0470.9443.1531.7030.6629.2328.98

Quanta Services Inc Quarterly Data

Mar12Jun12Sep12Dec12Mar13Jun13Sep13Dec13Mar14Jun14
ShillerPE 28.2731.4830.3329.2329.9026.7827.4728.9832.7129.89
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