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Westell Technologies Inc  (NAS:WSTL) E10: $-0.75 (As of Sep. 2017)

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.

Westell Technologies Inc's adjusted earnings per share data for the three months ended in Sep. 2017 was $0.050. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $-0.75 for the trailing ten years ended in Sep. 2017.

As of today, Westell Technologies Inc's current stock price is $4.22. Westell Technologies Inc's E10 for the quarter that ended in Sep. 2017 was $-0.75. Westell Technologies Inc's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Westell Technologies Inc was 63.00. The lowest was 0.00. And the median was 16.53.


Historical Data

* All numbers are in millions except for per share data and ratio. All numbers are in their local exchange's currency.

* Premium members only.

Westell Technologies Inc Annual Data

Mar08 Mar09 Mar10 Mar11 Mar12 Mar13 Mar14 Mar15 Mar16 Mar17
E10 Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.53 0.30 -0.38 -0.58 -0.74

Westell Technologies Inc Quarterly Data

Dec12 Mar13 Jun13 Sep13 Dec13 Mar14 Jun14 Sep14 Dec14 Mar15 Jun15 Sep15 Dec15 Mar16 Jun16 Sep16 Dec16 Mar17 Jun17 Sep17
E10 Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -0.72 -0.75 -0.74 -0.75 -0.75

Competitive Comparison
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap.


Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today’s price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get E10.

For example, Westell Technologies Inc's adjusted earnings per share data for the three months ended in Sep. 2017 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Sep. 2017 (Change)*Current CPI (Sep. 2017)
=0.05/246.819*246.819
=0.050

Current CPI (Sep. 2017) = 246.819.

Westell Technologies Inc Quarterly Data

per share eps CPI Adj_EPS
200712 -0.160 210.036 -0.188
200803 -4.080 213.528 -4.716
200806 -0.320 218.815 -0.361
200809 -0.280 218.783 -0.316
200812 -0.240 210.228 -0.282
200903 -0.120 212.709 -0.139
200906 0.120 215.693 0.137
200909 0.160 215.969 0.183
200912 0.160 215.949 0.183
201003 0.160 217.631 0.181
201006 0.280 217.965 0.317
201009 0.280 218.439 0.316
201012 0.160 219.179 0.180
201103 3.200 223.467 3.534
201106 1.200 225.722 1.312
201109 0.200 226.889 0.218
201112 1.160 225.672 1.269
201203 -0.120 229.392 -0.129
201206 -0.120 229.478 -0.129
201209 -0.160 231.407 -0.171
201212 -0.120 229.601 -0.129
201303 -2.520 232.773 -2.672
201306 -0.200 233.504 -0.211
201309 0.080 234.149 0.084
201312 0.120 233.049 0.127
201403 0.240 236.293 0.251
201406 -0.200 238.343 -0.207
201409 -1.040 238.031 -1.078
201412 -1.840 234.812 -1.934
201503 -0.840 236.119 -0.878
201506 -0.240 238.638 -0.248
201509 -0.160 237.945 -0.166
201512 -0.320 236.525 -0.334
201603 -0.360 238.132 -0.373
201606 -0.510 241.018 -0.522
201609 -0.380 241.428 -0.388
201612 -0.120 241.432 -0.123
201703 -0.040 243.801 -0.040
201706 -0.040 244.955 -0.040
201709 0.050 246.819 0.050

Add all the adjusted EPS together and divide 10 will get our e10.


Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

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.

Westell Technologies Inc's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=4.22/-0.75
=

* All numbers are in millions except for per share data and ratio. All numbers are in their local exchange's currency.

During the past 13 years, the highest Shiller P/E Ratio of Westell Technologies Inc was 63.00. The lowest was 0.00. And the median was 16.53.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


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