ADT (STU:541) E10: €-0.04 (As of Jun. 2026)

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.
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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.

STU:541 ADT Inc STU:541
65 GF Score
Price €6.35
GF Value €7.75
Valuation Modestly Undervalued
! 5 Warning Signs
View Full Analysis

What is ADT E10?

ADT STU:541 -1.55% 65 E10 is €-0.04 as of Jun. 2026. GuruFocus rates STU:541 with a GF Score™ of 65/100 and a GF Value™ of €7.75 (Modestly Undervalued). The stock has 5 warning signs investors should review.

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.

ADT's adjusted earnings per share data for the three months ended in Jun. 2026 was €0.165. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €-0.04 for the trailing ten years ended in Jun. 2026.

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 (2026-08-13), ADT's current stock price is €6.35. ADT's E10 for the quarter that ended in Jun. 2026 was €-0.04. ADT's Shiller PE Ratio of today is .


ADT  (STU:541) 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.


ADT E10 Related Terms


ADT E10 Historical Data

* Premium members only.

The historical data trend for ADT'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.

ADT E10 Chart

ADT Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

ADT Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 0.00 0.00 0.00 0.00 -0.04

STU:541 vs BCO, BRC, GEO: E10 Comparison

For the Security & Protection Services subindustry, ADT'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.


ADT Shiller PE Ratio vs Business Services Industry

For the Business Services industry and Industrials sector, ADT's Shiller PE Ratio distribution charts can be found below:

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


STU:541
65GF Score
ADT Inc STU:541
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

ADT 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, ADT's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.165/333.9520*333.9520
=0.165

Current CPI (Jun. 2026) = 333.9520.

ADT Quarterly Data

per share eps CPI Adj_EPS
201512 0.000 236.525 0.000
201612 -0.116 241.432 -0.160
201703 -0.190 243.801 -0.260
201706 -0.119 244.955 -0.162
201709 -0.075 246.819 -0.101
201712 0.720 246.524 0.975
201803 -0.178 249.554 -0.238
201806 -0.077 251.989 -0.102
201809 -0.266 252.439 -0.352
201812 -0.176 251.233 -0.234
201903 -0.080 254.202 -0.105
201906 -0.124 256.143 -0.162
201909 -0.227 256.759 -0.295
201912 -0.090 256.974 -0.117
202003 -0.362 258.115 -0.468
202006 -0.124 257.797 -0.161
202009 0.042 260.280 0.054
202012 -0.115 260.474 -0.147
202103 -0.050 264.877 -0.063
202106 -0.125 271.696 -0.154
202109 -0.111 274.310 -0.135
202112 -0.062 278.802 -0.074
202203 0.054 287.504 0.063
202206 0.095 296.311 0.107
202209 -0.182 296.808 -0.205
202212 0.151 296.797 0.170
202303 -0.121 301.836 -0.134
202306 0.083 305.109 0.091
202309 -0.084 307.789 -0.091
202312 0.550 306.746 0.599
202403 0.083 312.332 0.089
202406 0.093 314.175 0.099
202409 0.117 315.301 0.124
202412 0.191 315.605 0.202
202503 0.139 319.799 0.145
202506 0.156 322.561 0.162
202509 0.136 324.800 0.140
202512 0.145 324.054 0.149
202603 0.164 330.213 0.166
202606 0.165 333.952 0.165

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 €-0.04 mean?
ADT (STU:541) has a E10 of €-0.04 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on ADT and its competitors.
Is ADT's E10 too high?
ADT's current E10 is €-0.04. Overall, ADT has a GF Score™ of 65/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does ADT's E10 compare to BCO and BRC?
ADT's E10 of €-0.04 can be compared against companies in the Business 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 Business Services company?
A good E10 depends on the Business 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 ADT and its competitors. ADT's current E10 is €-0.04. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ADT stock overvalued right now?
Based on GuruFocus' analysis, ADT (STU:541) is currently considered Modestly Undervalued. The stock's GF Value™ is €7.75, compared to a current price of €6.35 — trading 18.1% below its estimated fair value. The current E10 is €-0.04. ADT's overall GF Score™ is 65/100 with 5 warning signs to review. 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 ADT (STU:541), the current E10 is €-0.04 as of Jun. 2026. 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.

Is ADT (STU:541) Overvalued in 2026?

Based on GuruFocus' analysis, ADT stock appears to be undervalued. The current stock price of €6.35 is trading 18.1% below its estimated GF Value™ of €7.75. GuruFocus considers ADT to be Modestly Undervalued.

Key valuation signals for STU:541:

  • E10: €-0.04
  • GF Value™: €7.75 vs. price of €6.35 (18.1% below fair value)
  • GF Score™: 65/100 with 5 warning signs

No single metric tells the full story. See the STU:541 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


ADT Business Description

Other Exchanges ADT:USA
Address 1501 Yamato Road, Boca Raton, FL, USA, 33431
ADT Inc is a provider of security, interactive, and smart home solutions serving consumer and small business customers in the United States (U.S.). The Company conducts business under the ADT brand name.
65GF Score

Get the complete analysis for STU:541

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€6.35
Price
€7.75
GF Value