Connection Technology Systems (ROCO:3672) E10: NT$-0.25 (As of Dec. 2025)

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.

ROCO:3672 Connection Technology Systems Inc ROCO:3672
53 GF Score
Price NT$12.65
GF Value NT$10.66
Valuation Modestly Overvalued
! 5 Warning Signs
View Full Analysis

What is Connection Technology Systems E10?

Connection Technology Systems ROCO:3672 -4.89% 53 E10 is NT$-0.25 as of Dec. 2025. GuruFocus rates ROCO:3672 with a GF Score™ of 53/100 and a GF Value™ of NT$10.66 (Modestly 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.

Connection Technology Systems's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$-0.750. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$-0.25 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Connection Technology Systems's average E10 Growth Rate was -175.80% 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.

As of today (2026-07-15), Connection Technology Systems's current stock price is NT$12.65. Connection Technology Systems's E10 for the quarter that ended in Dec. 2025 was NT$-0.25. Connection Technology Systems's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Connection Technology Systems was 860.00. The lowest was 21.50. And the median was 32.44.


Connection Technology Systems  (ROCO:3672) 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.

During the past 13 years, the highest Shiller P/E Ratio of Connection Technology Systems was 860.00. The lowest was 21.50. And the median was 32.44.


Be Aware

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


Connection Technology Systems E10 Related Terms


Connection Technology Systems E10 Historical Data

* Premium members only.

The historical data trend for Connection Technology Systems'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.

Connection Technology Systems E10 Chart

Connection Technology Systems 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 1.16 0.90 0.33 -0.25

Connection Technology Systems 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 0.33 0.21 0.02 -0.12 -0.25

ROCO:3672 vs CSCO, CIEN, MSI: E10 Comparison

For the Communication Equipment subindustry, Connection Technology Systems'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.


Connection Technology Systems Shiller PE Ratio vs Hardware Industry

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

* The bar in red indicates where Connection Technology Systems's Shiller PE Ratio falls into.


ROCO:3672
53GF Score
Connection Technology Systems Inc ROCO:3672
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Connection Technology Systems 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, Connection Technology Systems'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)
=-0.75/324.0540*324.0540
=-0.750

Current CPI (Dec. 2025) = 324.0540.

Connection Technology Systems Quarterly Data

per share eps CPI Adj_EPS
201603 0.472 238.132 0.642
201606 0.508 241.018 0.683
201609 0.558 241.428 0.749
201612 0.462 241.432 0.620
201703 0.231 243.801 0.307
201706 0.366 244.955 0.484
201709 -0.039 246.819 -0.051
201712 0.106 246.524 0.139
201803 0.202 249.554 0.262
201806 0.077 251.989 0.099
201809 -0.135 252.439 -0.173
201812 0.164 251.233 0.212
201903 0.010 254.202 0.013
201906 -0.144 256.143 -0.182
201909 -0.443 256.759 -0.559
201912 -0.578 256.974 -0.729
202003 -0.318 258.115 -0.399
202006 0.087 257.797 0.109
202009 0.530 260.280 0.660
202012 0.221 260.474 0.275
202103 -0.250 264.877 -0.306
202106 0.048 271.696 0.057
202109 0.597 274.310 0.705
202112 -0.164 278.802 -0.191
202203 0.144 287.504 0.162
202206 0.019 296.311 0.021
202209 0.241 296.808 0.263
202212 -0.741 296.797 -0.809
202303 -0.491 301.836 -0.527
202306 -0.433 305.109 -0.460
202309 -0.318 307.789 -0.335
202312 0.067 306.746 0.071
202403 -0.751 312.332 -0.779
202406 -0.395 314.175 -0.407
202409 -0.690 315.301 -0.709
202412 -0.170 315.605 -0.175
202503 -0.154 319.799 -0.156
202506 -1.107 322.561 -1.112
202509 -0.220 324.800 -0.219
202512 -0.750 324.054 -0.750

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$-0.25 mean?
Connection Technology Systems (ROCO:3672) has a E10 of NT$-0.25 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Connection Technology Systems and its competitors.
Is Connection Technology Systems' E10 too high?
Connection Technology Systems' current E10 is NT$-0.25. Overall, Connection Technology Systems has a GF Score™ of 53/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Connection Technology Systems' E10 compare to CSCO and CIEN?
Connection Technology Systems' E10 of NT$-0.25 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 Connection Technology Systems and its competitors. Connection Technology Systems's current E10 is NT$-0.25. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Connection Technology Systems stock overvalued right now?
Based on GuruFocus' analysis, Connection Technology Systems (ROCO:3672) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$10.66, compared to a current price of NT$12.65 — trading 18.7% above its estimated fair value. The current E10 is NT$-0.25. Connection Technology Systems' overall GF Score™ is 53/100 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 Connection Technology Systems (ROCO:3672), the current E10 is NT$-0.25 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 Connection Technology Systems (ROCO:3672) Overvalued in 2026?

Based on GuruFocus' analysis, Connection Technology Systems stock appears to be overvalued. The current stock price of NT$12.65 is trading 18.7% above its estimated GF Value™ of NT$10.66. GuruFocus considers Connection Technology Systems to be Modestly Overvalued.

Key valuation signals for ROCO:3672:

  • E10: NT$-0.25
  • GF Value™: NT$10.66 vs. price of NT$12.65 (18.7% above fair value)
  • GF Score™: 53/100 with 5 warning signs

No single metric tells the full story. See the ROCO:3672 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Connection Technology Systems Business Description

Address 18F-6, No.79, Sec.1, Xintai 5th Road, Xizhi District, New Taipei City, Taipei, TWN, 221
Connection Technology Systems Inc. is engaged in providing fiber optic communication products and services in Taiwan. Its main products include Fiber Switch Product, Fiber Gateway Product, PoE Product, Media Converter Product.
53GF Score

Get the complete analysis for ROCO:3672

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

NT$12.65
Price
NT$10.66
GF Value