Tetra Technologies (STU:TGI) E10: €-0.17 (As of Mar. 2026)


STU:TGI Tetra Technologies Inc STU:TGI
65 GF Score
Price €9.50
GF Value €3.61
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is Tetra Technologies E10?

Tetra Technologies STU:TGI +5.56% 65 E10 is €-0.17 as of Mar. 2026. GuruFocus rates STU:TGI with a GF Score™ of 65/100 and a GF Value™ of €3.61 (Significantly Overvalued). 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.

Tetra Technologies's adjusted earnings per share data for the three months ended in Mar. 2026 was €0.052. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €-0.17 for the trailing ten years ended in Mar. 2026.

During the past 3 years, the average E10 Growth Rate was 26.30% per year. During the past 5 years, the average E10 Growth Rate was 14.50% per year. During the past 10 years, the average E10 Growth Rate was -6.70% per year. 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.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Tetra Technologies was 26.30% per year. The lowest was -66.00% per year. And the median was 2.25% per year.

As of today (2026-06-28), Tetra Technologies's current stock price is €9.50. Tetra Technologies's E10 for the quarter that ended in Mar. 2026 was €-0.17. Tetra Technologies's Shiller PE Ratio of today is .


Tetra Technologies  (STU:TGI) 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.


Tetra Technologies E10 Related Terms


Tetra Technologies E10 Historical Data

* Premium members only.

The historical data trend for Tetra Technologies'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.

Tetra Technologies E10 Chart

Tetra Technologies 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 -0.82 -0.51 -0.30

Tetra Technologies Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 -0.52 -0.50 -0.51 -0.30 -0.17

STU:TGI vs DLX, AIAI, CODI: E10 Comparison

For the Conglomerates subindustry, Tetra Technologies'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.


Tetra Technologies Shiller PE Ratio vs Conglomerates Industry

For the Conglomerates industry and Industrials sector, Tetra Technologies's Shiller PE Ratio distribution charts can be found below:

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


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

Tetra Technologies 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, Tetra Technologies's adjusted earnings per share data for the three months ended in Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.052/330.2130*330.2130
=0.052

Current CPI (Mar. 2026) = 330.2130.

Tetra Technologies Quarterly Data

per share eps CPI Adj_EPS
201606 -0.285 241.018 -0.390
201609 -0.143 241.428 -0.196
201612 -0.313 241.432 -0.428
201703 -0.019 243.801 -0.026
201706 -0.089 244.955 -0.120
201709 0.025 246.819 0.033
201712 -0.211 246.524 -0.283
201803 -0.373 249.554 -0.494
201806 -0.043 251.989 -0.056
201809 -0.051 252.439 -0.067
201812 0.035 251.233 0.046
201903 -0.080 254.202 -0.104
201906 -0.053 256.143 -0.068
201909 -0.118 256.759 -0.152
201912 -0.819 256.974 -1.052
202003 -0.009 258.115 -0.012
202006 -0.151 257.797 -0.193
202009 -0.085 260.280 -0.108
202012 -0.099 260.474 -0.126
202103 0.722 264.877 0.900
202106 -0.042 271.696 -0.051
202109 0.017 274.310 0.020
202112 -0.009 278.802 -0.011
202203 0.054 287.504 0.062
202206 0.009 296.311 0.010
202209 0.002 296.808 0.002
202212 -0.009 296.797 -0.010
202303 0.047 301.836 0.051
202306 0.129 305.109 0.140
202309 0.037 307.789 0.040
202312 -0.028 306.746 -0.030
202403 0.009 312.332 0.010
202406 0.056 314.175 0.059
202409 -0.018 315.301 -0.019
202412 0.745 315.605 0.779
202503 0.028 319.799 0.029
202506 0.069 322.561 0.071
202509 0.026 324.800 0.026
202512 -0.102 324.054 -0.104
202603 0.052 330.213 0.052

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 €-0.17 mean?
Tetra Technologies (STU:TGI) has a E10 of €-0.17 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Tetra Technologies and its competitors.
Is Tetra Technologies' E10 too high?
Tetra Technologies' current E10 is €-0.17. Overall, Tetra Technologies has a GF Score™ of 65/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tetra Technologies' E10 compare to DLX and AIAI?
Tetra Technologies' E10 of €-0.17 can be compared against companies in the Conglomerates 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 Conglomerates company?
A good E10 depends on the Conglomerates 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 Tetra Technologies and its competitors. Tetra Technologies's current E10 is €-0.17. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tetra Technologies stock overvalued right now?
Based on GuruFocus' analysis, Tetra Technologies (STU:TGI) is currently considered Significantly Overvalued. The stock's GF Value™ is €3.61, compared to a current price of €9.50 — trading 163.2% above its estimated fair value. The current E10 is €-0.17. Tetra Technologies' 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 Tetra Technologies (STU:TGI), the current E10 is €-0.17 as of Mar. 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 Tetra Technologies (STU:TGI) Overvalued in 2026?

Based on GuruFocus' analysis, Tetra Technologies stock appears to be overvalued. The current stock price of €9.50 is trading 163.2% above its estimated GF Value™ of €3.61. GuruFocus considers Tetra Technologies to be Significantly Overvalued.

Key valuation signals for STU:TGI:

  • E10: €-0.17
  • GF Value™: €3.61 vs. price of €9.50 (163.2% above fair value)
  • GF Score™: 65/100 with 5 warning signs

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


Tetra Technologies Business Description

Other Exchanges TTI:USA
Address 10000 Energy Drive, Spring, TX, USA, 77389
Tetra Technologies Inc is a diversified oil and gas services company, focused on completion fluids and associated products and services, water management, frac flowback, production well testing, offshore rig cooling, and compression services. It has two reporting segments, namely Completion Fluids & Products and Water & Flowback Services. The Completion Fluids & Products Division manufactures and markets clear brine fluids, additives, and associated products and services. The Water & Flowback Services Segment provides onshore oil and gas operators with comprehensive water management services. The majority of revenue is from the Completion Fluids & Products segment.
65GF Score

Get the complete analysis for STU:TGI

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

€9.50
Price
€3.61
GF Value