Zyxel Group (TPE:3704) E10: NT$1.40 (As of Dec. 2025)


TPE:3704 Zyxel Group Corp TPE:3704
75 GF Score
Price NT$43.00
GF Value NT$36.76
Valuation Modestly Overvalued
! 2 Warning Signs
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What is Zyxel Group E10?

Zyxel Group TPE:3704 -9.85% 75 E10 is NT$1.40 as of Dec. 2025. GuruFocus rates TPE:3704 with a GF Score™ of 75/100 and a GF Value™ of NT$36.76 (Modestly Overvalued). The stock has 2 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.

Zyxel Group's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$0.430. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$1.40 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Zyxel Group's average E10 Growth Rate was 38.60% per year. During the past 3 years, the average E10 Growth Rate was 29.10% per year. During the past 5 years, the average E10 Growth Rate was 42.10% 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 Zyxel Group was 63.80% per year. The lowest was 29.10% per year. And the median was 36.05% per year.

As of today (2026-06-28), Zyxel Group's current stock price is NT$43.00. Zyxel Group's E10 for the quarter that ended in Dec. 2025 was NT$1.40. Zyxel Group's Shiller PE Ratio of today is 30.71.

During the past 13 years, the highest Shiller PE Ratio of Zyxel Group was 245.54. The lowest was 21.75. And the median was 56.92.


Zyxel Group  (TPE:3704) 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.

Zyxel Group's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=43.00/1.40
=30.71

* 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.

During the past 13 years, the highest Shiller P/E Ratio of Zyxel Group was 245.54. The lowest was 21.75. And the median was 56.92.


Be Aware

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


Zyxel Group E10 Related Terms


Zyxel Group E10 Historical Data

* Premium members only.

The historical data trend for Zyxel Group'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.

Zyxel Group E10 Chart

Zyxel Group 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 0.23 0.65 0.90 1.01 1.40

Zyxel Group Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
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 1.01 1.23 1.21 1.32 1.40

TPE:3704 vs CSCO, CIEN, MSI: E10 Comparison

For the Communication Equipment subindustry, Zyxel Group'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.


Zyxel Group Shiller PE Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Zyxel Group's Shiller PE Ratio distribution charts can be found below:

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


TPE:3704
75GF Score
Zyxel Group Corp TPE:3704
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Zyxel Group 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, Zyxel Group's adjusted earnings per share data for the three months ended in Dec. 2025 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=0.43/324.0540*324.0540
=0.430

Current CPI (Dec. 2025) = 324.0540.

Zyxel Group Quarterly Data

per share eps CPI Adj_EPS
201603 0.412 238.132 0.561
201606 0.078 241.018 0.105
201609 -0.156 241.428 -0.209
201612 0.390 241.432 0.523
201703 -0.746 243.801 -0.992
201706 -0.267 244.955 -0.353
201709 0.067 246.819 0.088
201712 -0.523 246.524 -0.687
201803 -0.189 249.554 -0.245
201806 -0.768 251.989 -0.988
201809 -0.423 252.439 -0.543
201812 -0.145 251.233 -0.187
201903 0.957 254.202 1.220
201906 0.100 256.143 0.127
201909 -0.278 256.759 -0.351
201912 -0.501 256.974 -0.632
202003 -0.367 258.115 -0.461
202006 0.423 257.797 0.532
202009 0.969 260.280 1.206
202012 1.091 260.474 1.357
202103 0.312 264.877 0.382
202106 0.913 271.696 1.089
202109 0.950 274.310 1.122
202112 0.390 278.802 0.453
202203 0.730 287.504 0.823
202206 0.170 296.311 0.186
202209 1.870 296.808 2.042
202212 1.140 296.797 1.245
202303 1.150 301.836 1.235
202306 0.760 305.109 0.807
202309 0.720 307.789 0.758
202312 0.700 306.746 0.739
202403 0.110 312.332 0.114
202406 0.320 314.175 0.330
202409 -0.280 315.301 -0.288
202412 1.260 315.605 1.294
202503 0.690 319.799 0.699
202506 -0.940 322.561 -0.944
202509 1.370 324.800 1.367
202512 0.430 324.054 0.430

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 NT$1.40 mean?
Zyxel Group (TPE:3704) has a E10 of NT$1.40 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Zyxel Group and its competitors.
Is Zyxel Group's E10 too high?
Zyxel Group's current E10 is NT$1.40. Overall, Zyxel Group has a GF Score™ of 75/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Zyxel Group's E10 compare to CSCO and CIEN?
Zyxel Group's E10 of NT$1.40 can be compared against companies in the Hardware 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 Hardware company?
A good E10 depends on the Hardware 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 Zyxel Group and its competitors. Zyxel Group's current E10 is NT$1.40. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zyxel Group stock overvalued right now?
Based on GuruFocus' analysis, Zyxel Group (TPE:3704) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$36.76, compared to a current price of NT$43.00 — trading 17% above its estimated fair value. The current E10 is NT$1.40. Zyxel Group's overall GF Score™ is 75/100 with 2 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 Zyxel Group (TPE:3704), the current E10 is NT$1.40 as of Dec. 2025. 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 Zyxel Group (TPE:3704) Overvalued in 2026?

Based on GuruFocus' analysis, Zyxel Group stock appears to be overvalued. The current stock price of NT$43.00 is trading 17% above its estimated GF Value™ of NT$36.76. GuruFocus considers Zyxel Group to be Modestly Overvalued.

Key valuation signals for TPE:3704:

  • E10: NT$1.40
  • GF Value™: NT$36.76 vs. price of NT$43.00 (17% above fair value)
  • GF Score™: 75/100 with 2 warning signs

No single metric tells the full story. See the TPE:3704 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Zyxel Group Business Description

Address Gongdao 5th Road, 3rd Floor, No. 363, Section 2, East District, Hsinchu, TWN
Zyxel Group Corp is a Taiwan-based company that offers communications and networking products. It produces wifi systems, wireless extenders, home routers, cloud access cameras, switches, power and adapters, personal cloud storage, and security appliances and services. Geographically, it covers the United States, France, and other countries. It has four reportable segments: brand business segment, channel business segment, product business segment, and investment segment.
75GF Score

Get the complete analysis for TPE:3704

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

NT$43.00
Price
NT$36.76
GF Value