Tang Eng Iron Works Co (ROCO:2035) E10: NT$-1.05 (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:2035 Tang Eng Iron Works Co Ltd ROCO:2035
44 GF Score
Price NT$27.15
GF Value NT$23.81
Valuation Modestly Overvalued
! 9 Warning Signs
View Full Analysis

What is Tang Eng Iron Works Co E10?

Tang Eng Iron Works Co ROCO:2035 +0.18% 44 E10 is NT$-1.05 as of Dec. 2025. GuruFocus rates ROCO:2035 with a GF Score™ of 44/100 and a GF Value™ of NT$23.81 (Modestly Overvalued). The stock has 9 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.

Tang Eng Iron Works Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$-1.126. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$-1.05 for the trailing ten years ended in Dec. 2025.

During the past 3 years, the average E10 Growth Rate was -22.60% per year. During the past 5 years, the average E10 Growth Rate was -5.60% 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 Tang Eng Iron Works Co was 14.50% per year. The lowest was -22.60% per year. And the median was 3.40% per year.

As of today (2026-07-17), Tang Eng Iron Works Co's current stock price is NT$27.15. Tang Eng Iron Works Co's E10 for the quarter that ended in Dec. 2025 was NT$-1.05. Tang Eng Iron Works Co's Shiller PE Ratio of today is .


Tang Eng Iron Works Co  (ROCO:2035) 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.


Tang Eng Iron Works Co E10 Related Terms


Tang Eng Iron Works Co E10 Historical Data

* Premium members only.

The historical data trend for Tang Eng Iron Works Co'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.

Tang Eng Iron Works Co E10 Chart

Tang Eng Iron Works Co 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 -0.65 -0.57 -0.55 -0.92 -1.05

Tang Eng Iron Works Co 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 -0.92 -0.96 -1.03 -1.00 -1.05

ROCO:2035 vs NUE, STLD, RS: E10 Comparison

For the Steel subindustry, Tang Eng Iron Works Co'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.


Tang Eng Iron Works Co Shiller PE Ratio vs Steel Industry

For the Steel industry and Basic Materials sector, Tang Eng Iron Works Co's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Tang Eng Iron Works Co's Shiller PE Ratio falls into.


ROCO:2035
44GF Score
Tang Eng Iron Works Co Ltd ROCO:2035
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Tang Eng Iron Works Co 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, Tang Eng Iron Works Co'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)
=-1.126/324.0540*324.0540
=-1.126

Current CPI (Dec. 2025) = 324.0540.

Tang Eng Iron Works Co Quarterly Data

per share eps CPI Adj_EPS
201603 -0.210 238.132 -0.286
201606 0.840 241.018 1.129
201609 0.350 241.428 0.470
201612 0.459 241.432 0.616
201703 0.940 243.801 1.249
201706 -0.190 244.955 -0.251
201709 0.030 246.819 0.039
201712 -0.090 246.524 -0.118
201803 -0.470 249.554 -0.610
201806 -0.230 251.989 -0.296
201809 -1.430 252.439 -1.836
201812 -2.000 251.233 -2.580
201903 0.430 254.202 0.548
201906 -0.740 256.143 -0.936
201909 2.020 256.759 2.549
201912 -1.680 256.974 -2.119
202003 -1.510 258.115 -1.896
202006 -0.260 257.797 -0.327
202009 0.170 260.280 0.212
202012 -0.295 260.474 -0.367
202103 0.160 264.877 0.196
202106 0.850 271.696 1.014
202109 2.150 274.310 2.540
202112 1.380 278.802 1.604
202203 0.830 287.504 0.936
202206 0.110 296.311 0.120
202209 -1.260 296.808 -1.376
202212 -0.317 296.797 -0.346
202303 0.030 301.836 0.032
202306 -1.400 305.109 -1.487
202309 -0.550 307.789 -0.579
202312 -1.310 306.746 -1.384
202403 -0.520 312.332 -0.540
202406 -0.040 314.175 -0.041
202409 -0.720 315.301 -0.740
202412 -0.929 315.605 -0.954
202503 -1.220 319.799 -1.236
202506 -1.320 322.561 -1.326
202509 -1.050 324.800 -1.048
202512 -1.126 324.054 -1.126

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$-1.05 mean?
Tang Eng Iron Works Co (ROCO:2035) has a E10 of NT$-1.05 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Tang Eng Iron Works Co and its competitors.
Is Tang Eng Iron Works Co's E10 too high?
Tang Eng Iron Works Co's current E10 is NT$-1.05. Overall, Tang Eng Iron Works Co has a GF Score™ of 44/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tang Eng Iron Works Co's E10 compare to NUE and STLD?
Tang Eng Iron Works Co's E10 of NT$-1.05 can be compared against companies in the Steel 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 Steel company?
A good E10 depends on the Steel 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 Tang Eng Iron Works Co and its competitors. Tang Eng Iron Works Co's current E10 is NT$-1.05. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tang Eng Iron Works Co stock overvalued right now?
Based on GuruFocus' analysis, Tang Eng Iron Works Co (ROCO:2035) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$23.81, compared to a current price of NT$27.15 — trading 14% above its estimated fair value. The current E10 is NT$-1.05. Tang Eng Iron Works Co's overall GF Score™ is 44/100 with 9 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 Tang Eng Iron Works Co (ROCO:2035), the current E10 is NT$-1.05 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 Tang Eng Iron Works Co (ROCO:2035) Overvalued in 2026?

Based on GuruFocus' analysis, Tang Eng Iron Works Co stock appears to be overvalued. The current stock price of NT$27.15 is trading 14% above its estimated GF Value™ of NT$23.81. GuruFocus considers Tang Eng Iron Works Co to be Modestly Overvalued.

Key valuation signals for ROCO:2035:

  • E10: NT$-1.05
  • GF Value™: NT$23.81 vs. price of NT$27.15 (14% above fair value)
  • GF Score™: 44/100 with 9 warning signs

No single metric tells the full story. See the ROCO:2035 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Tang Eng Iron Works Co Business Description

Address No.4 Yanhai 2nd Road, Xiaogang District, Hsiao Kang, Kaohsiung, TWN, 81260
Tang Eng Iron Works Co Ltd is engaged in the manufacture and trading of stainless steel products. Its products include Anti-bacterial Stainless-Steel Coils and Products; Crimped Steel Board; Anti-bacterial Stainless-Steel Products; Duplex Stainless Steel; and Precipitation Hardening Stainless Steel. The company has only one reportable segment: the stainless steel segment that mainly manufactures and trades stainless steel products.
44GF Score

Get the complete analysis for ROCO:2035

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

NT$27.15
Price
NT$23.81
GF Value