ZTEK (Zentek) E10: $-0.08 (As of Mar. 2026)


ZTEK Zentek Ltd ZTEK
16 GF Score
Price $0.46
! 6 Warning Signs
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What is Zentek E10?

Zentek ZTEK -7.22% 16 E10 is $-0.08 as of Mar. 2026. GuruFocus rates ZTEK with a GF Score™ of 16/100. The stock has 6 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.

Zentek's adjusted earnings per share data for the three months ended in Mar. 2026 was $-0.022. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $-0.08 for the trailing ten years ended in Mar. 2026.

During the past 3 years, the average E10 Growth Rate was -3.20% per year. During the past 5 years, the average E10 Growth Rate was -11.20% 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 Zentek was -3.20% per year. The lowest was -22.40% per year. And the median was -12.75% per year.

As of today (2026-06-29), Zentek's current stock price is $0.4575. Zentek's E10 for the quarter that ended in Mar. 2026 was $-0.08. Zentek's Shiller PE Ratio of today is .


Zentek  (NAS:ZTEK) 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.


Zentek E10 Related Terms


Zentek E10 Historical Data

* Premium members only.

The historical data trend for Zentek'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.

Zentek E10 Chart

Zentek Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only -0.07 -0.07 -0.08 -0.08 -0.08

Zentek 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 -0.08 -0.08 -0.08 -0.08 -0.08

ZTEK vs ISRG, BDX, MDLN: E10 Comparison

For the Medical Instruments & Supplies subindustry, Zentek'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.


Zentek Shiller PE Ratio vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Zentek's Shiller PE Ratio distribution charts can be found below:

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


ZTEK
16GF Score
Zentek Ltd ZTEK
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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Zentek 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, Zentek'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)
=-0.022/132.2623*132.2623
=-0.022

Current CPI (Mar. 2026) = 132.2623.

Zentek Quarterly Data

per share eps CPI Adj_EPS
201606 -0.008 102.002 -0.010
201609 -0.015 101.765 -0.019
201612 -0.007 101.449 -0.009
201703 -0.008 102.634 -0.010
201706 -0.008 103.029 -0.010
201709 -0.008 103.345 -0.010
201712 -0.008 103.345 -0.010
201803 0.000 105.004 0.000
201806 -0.008 105.557 -0.010
201809 -0.015 105.636 -0.019
201812 -0.007 105.399 -0.009
201903 -0.007 106.979 -0.009
201906 -0.008 107.690 -0.010
201909 -0.004 107.611 -0.005
201912 -0.002 107.769 -0.002
202003 -0.007 107.927 -0.009
202006 -0.003 108.401 -0.004
202009 -0.008 108.164 -0.010
202012 -0.023 108.559 -0.028
202103 -0.008 110.298 -0.010
202106 -0.016 111.720 -0.019
202109 -0.253 112.905 -0.296
202112 -0.016 113.774 -0.019
202203 0.016 117.646 0.018
202206 -0.039 120.806 -0.043
202209 -0.022 120.648 -0.024
202212 -0.022 120.964 -0.024
202303 -0.015 122.702 -0.016
202306 -0.023 124.203 -0.024
202309 -0.022 125.230 -0.023
202312 -0.022 125.072 -0.023
202403 -0.022 126.258 -0.023
202406 -0.022 127.522 -0.023
202409 -0.022 127.285 -0.023
202412 -0.014 127.364 -0.015
202503 -0.014 129.181 -0.014
202506 -0.007 129.892 -0.007
202509 -0.014 130.287 -0.014
202512 -0.014 130.366 -0.014
202603 -0.022 132.262 -0.022

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 $-0.08 mean?
Zentek (ZTEK) has a E10 of $-0.08 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Zentek and its competitors.
Is Zentek's E10 too high?
Zentek's current E10 is $-0.08. Overall, Zentek has a GF Score™ of 16/100, reflecting its overall financial health beyond just this single metric.
How does Zentek's E10 compare to ISRG and BDX?
Zentek's E10 of $-0.08 can be compared against companies in the Medical Devices & Instruments 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 Medical Devices & Instruments company?
A good E10 depends on the Medical Devices & Instruments 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 Zentek and its competitors. Zentek's current E10 is $-0.08. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zentek stock overvalued right now?
Zentek (ZTEK) has a current E10 of $-0.08. The current E10 is $-0.08. Zentek's overall GF Score™ is 16/100 with 6 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 Zentek (ZTEK), the current E10 is $-0.08 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.

Zentek Business Description

Other Exchanges ZEN:Canada
Address 24 Corporate Court, Guelph, ON, CAN, N1G 5G5
Zentek Ltd is an IP development and commercialization company focused on next-gen healthcare solutions in the areas of prevention, detection, and treatment. It is focused on commercializing ZENGuard, a patent-pending coating with 99% antimicrobial activity, including against COVID-19, and the potential to use similar compounds as pharmaceutical products against infectious diseases.
16GF Score

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

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