TWER (Towerstream) E10: $-424.33 (As of Dec. 2018)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

What is Towerstream E10?

Towerstream TWER E10 is $-424.33 as of Dec. 2018.

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.

Towerstream's adjusted earnings per share data for the three months ended in Dec. 2018 was $-6.530. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $-424.33 for the trailing ten years ended in Dec. 2018.

Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

As of today (2026-07-25), Towerstream's current stock price is $0.0101. Towerstream's E10 for the quarter that ended in Dec. 2018 was $-424.33. Towerstream's Shiller PE Ratio of today is .


Towerstream  (OTCPK:TWER) 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.


Be Aware

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


Towerstream E10 Related Terms


Towerstream E10 Historical Data

* Premium members only.

The historical data trend for Towerstream's E10 can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Towerstream E10 Chart

Towerstream Annual Data
Trend Dec09 Dec10 Dec11 Dec12 Dec13 Dec14 Dec15 Dec16 Dec17 Dec18
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 -486.47 -515.90 -478.76 -424.33

Towerstream Quarterly Data
Mar14 Jun14 Sep14 Dec14 Mar15 Jun15 Sep15 Dec15 Mar16 Jun16 Sep16 Dec16 Mar17 Jun17 Sep17 Dec17 Mar18 Jun18 Sep18 Dec18
E10 Get a 7-Day Free Trial 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 -478.76 -466.65 -452.87 -442.37 -424.33

TWER vs FULO, DTGI: E10 Comparison

For the Telecom Services subindustry, Towerstream's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio data, can be viewed below:

* 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. Note that "N/A" values will not show up in the chart.


Towerstream Shiller PE Ratio vs Telecommunication Services Industry

For the Telecommunication Services industry and Communication Services sector, Towerstream's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Towerstream's Shiller PE Ratio falls into.



Towerstream E10 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.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Towerstream's adjusted earnings per share data for the three months ended in Dec. 2018 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Dec. 2018 (Change)*Current CPI (Dec. 2018)
=-6.53/251.2330*251.2330
=-6.530

Current CPI (Dec. 2018) = 251.2330.

Towerstream Quarterly Data

per share eps CPI Adj_EPS
200903 -105.003 212.709 -124.020
200906 -90.002 215.693 -104.832
200909 -90.002 215.969 -104.698
200912 -90.002 215.949 -104.707
201003 -60.002 217.631 -69.266
201006 -60.002 217.965 -69.160
201009 -60.002 218.439 -69.010
201012 -60.002 219.179 -68.777
201103 -60.002 223.467 -67.457
201106 -30.001 225.722 -33.392
201109 -75.002 226.889 -83.049
201112 -60.002 225.672 -66.798
201203 -120.003 229.392 -131.429
201206 -135.003 229.478 -147.802
201209 -150.004 231.407 -162.856
201212 -180.005 229.601 -196.964
201303 -135.003 232.773 -145.709
201306 -135.003 233.504 -145.253
201309 -135.003 234.149 -144.853
201312 -150.004 233.049 -161.708
201403 -150.004 236.293 -159.488
201406 -150.004 238.343 -158.116
201409 -135.003 238.031 -142.491
201412 -180.005 234.812 -192.593
201503 -195.005 236.119 -207.487
201506 -198.755 238.638 -209.245
201509 -187.505 237.945 -197.976
201512 -312.758 236.525 -332.206
201603 -154.504 238.132 -163.004
201606 -103.503 241.018 -107.890
201609 -75.000 241.428 -78.046
201612 -21.460 241.432 -22.331
201703 -14.500 243.801 -14.942
201706 -17.910 244.955 -18.369
201709 -8.300 246.819 -8.448
201712 -3.760 246.524 -3.832
201803 -7.160 249.554 -7.208
201806 -5.660 251.989 -5.643
201809 -6.550 252.439 -6.519
201812 -6.530 251.233 -6.530

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

Frequently Asked Questions Learn more about E10 →
What does a E10 of $-424.33 mean?
Towerstream (TWER) has a E10 of $-424.33 as of Dec. 2018. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Towerstream and its competitors.
Is Towerstream's E10 too high?
Towerstream's current E10 is $-424.33.
How does Towerstream's E10 compare to FULO and DTGI?
Towerstream's E10 of $-424.33 can be compared against companies in the Telecommunication Services industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for a Telecommunication Services company?
A good E10 depends on the Telecommunication Services industry context. However, E10 should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Towerstream and its competitors. Towerstream's current E10 is $-424.33. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Towerstream stock overvalued right now?
Towerstream (TWER) has a current E10 of $-424.33. The current E10 is $-424.33. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Towerstream (TWER), the current E10 is $-424.33 as of Dec. 2018. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Towerstream Business Description

Address 76 Hammarlund Way, Middletown, RI, USA, 02842
Towerstream Corp is a US-based company providing fixed wireless services. The company operates through the Fixed Wireless Services business segment. Its fixed wireless service provides bandwidth on demand, wireless redundancy, virtual private networks, disaster recovery, bundled data and video services. The company installs receivers and antennas on rooftops to establish a wireless connection between the customer Location to one or more of its points of presence.