Ruentex Materials Co (TPE:8463) E10: NT$0.98 (As of Jun. 2026)

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TPE:8463 Ruentex Materials Co Ltd TPE:8463
82 GF Score
Price NT$21.20
GF Value NT$27.63
Valuation Modestly Undervalued
! 5 Warning Signs
View Full Analysis

What is Ruentex Materials Co E10?

Ruentex Materials Co TPE:8463 -0.24% 82 E10 is NT$0.98 as of Jun. 2026. GuruFocus rates TPE:8463 with a GF Score™ of 82/100 and a GF Value™ of NT$27.63 (Modestly Undervalued). 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.

Ruentex Materials Co's adjusted earnings per share data for the three months ended in Jun. 2026 was NT$0.620. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$0.98 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Ruentex Materials Co's average E10 Growth Rate was 15.30% 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 (2026-08-20), Ruentex Materials Co's current stock price is NT$21.20. Ruentex Materials Co's E10 for the quarter that ended in Jun. 2026 was NT$0.98. Ruentex Materials Co's Shiller PE Ratio of today is 21.63.

During the past 13 years, the highest Shiller PE Ratio of Ruentex Materials Co was 31.29. The lowest was 19.87. And the median was 26.94.


Ruentex Materials Co  (TPE:8463) 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.

Ruentex Materials Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=21.20/0.98
=21.63

* 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 Ruentex Materials Co was 31.29. The lowest was 19.87. And the median was 26.94.


Be Aware

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


Ruentex Materials Co E10 Related Terms


Ruentex Materials Co E10 Historical Data

* Premium members only.

The historical data trend for Ruentex Materials 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.

Ruentex Materials Co E10 Chart

Ruentex Materials 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 0.00 0.00 1.15 0.89 0.92

Ruentex Materials Co Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 0.85 0.91 0.92 0.96 0.98

TPE:8463 vs CRH, VMC, MLM: E10 Comparison

For the Building Materials subindustry, Ruentex Materials 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.


Ruentex Materials Co Shiller PE Ratio vs Building Materials Industry

For the Building Materials industry and Basic Materials sector, Ruentex Materials Co's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Ruentex Materials Co's Shiller PE Ratio falls into.


TPE:8463
82GF Score
Ruentex Materials Co Ltd TPE:8463
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ruentex Materials 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, Ruentex Materials Co's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.62/333.9520*333.9520
=0.620

Current CPI (Jun. 2026) = 333.9520.

Ruentex Materials Co Quarterly Data

per share eps CPI Adj_EPS
201609 0.330 241.428 0.456
201612 0.390 241.432 0.539
201703 0.100 243.801 0.137
201706 0.220 244.955 0.300
201709 0.200 246.819 0.271
201712 0.430 246.524 0.582
201803 0.070 249.554 0.094
201806 0.180 251.989 0.239
201809 0.170 252.439 0.225
201812 0.350 251.233 0.465
201903 0.090 254.202 0.118
201906 0.010 256.143 0.013
201909 0.250 256.759 0.325
201912 0.240 256.974 0.312
202003 -0.270 258.115 -0.349
202006 0.220 257.797 0.285
202009 0.480 260.280 0.616
202012 0.440 260.474 0.564
202103 0.180 264.877 0.227
202106 -0.510 271.696 -0.627
202109 -0.210 274.310 -0.256
202112 -0.150 278.802 -0.180
202203 -0.480 287.504 -0.558
202206 0.060 296.311 0.068
202209 0.420 296.808 0.473
202212 0.248 296.797 0.279
202303 0.030 301.836 0.033
202306 0.250 305.109 0.274
202309 0.260 307.789 0.282
202312 0.230 306.746 0.250
202403 0.380 312.332 0.406
202406 0.150 314.175 0.159
202409 0.430 315.301 0.455
202412 0.290 315.605 0.307
202503 0.150 319.799 0.157
202506 0.770 322.561 0.797
202509 0.930 324.800 0.956
202512 0.010 324.054 0.010
202603 0.420 330.213 0.425
202606 0.620 333.952 0.620

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$0.98 mean?
Ruentex Materials Co (TPE:8463) has a E10 of NT$0.98 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Ruentex Materials Co and its competitors.
Is Ruentex Materials Co's E10 too high?
Ruentex Materials Co's current E10 is NT$0.98. Overall, Ruentex Materials Co has a GF Score™ of 82/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Ruentex Materials Co's E10 compare to CRH and VMC?
Ruentex Materials Co's E10 of NT$0.98 can be compared against companies in the Building Materials 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 Building Materials company?
A good E10 depends on the Building Materials 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 Ruentex Materials Co and its competitors. Ruentex Materials Co's current E10 is NT$0.98. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ruentex Materials Co stock overvalued right now?
Based on GuruFocus' analysis, Ruentex Materials Co (TPE:8463) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$27.63, compared to a current price of NT$21.20 — trading 23.3% below its estimated fair value. The current E10 is NT$0.98. Ruentex Materials Co's overall GF Score™ is 82/100 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 Ruentex Materials Co (TPE:8463), the current E10 is NT$0.98 as of Jun. 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 Ruentex Materials Co (TPE:8463) Overvalued in 2026?

Based on GuruFocus' analysis, Ruentex Materials Co stock appears to be undervalued. The current stock price of NT$21.20 is trading 23.3% below its estimated GF Value™ of NT$27.63. GuruFocus considers Ruentex Materials Co to be Modestly Undervalued.

Key valuation signals for TPE:8463:

  • E10: NT$0.98
  • GF Value™: NT$27.63 vs. price of NT$21.20 (23.3% below fair value)
  • GF Score™: 82/100 with 5 warning signs

No single metric tells the full story. See the TPE:8463 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ruentex Materials Co Business Description

Address No. 308, Section 2, Bade Road, 10th Floor, Taipei, TWN
Ruentex Materials Co Ltd is engaged in the manufacturing and sale of semi-finished cement products. The company is also engaged in mining, manufacturing, and distribution of cement raw materials and mining and distribution of mineral ore, quarrying, building materials development, manufacture, and distribution, manufacture, and sale of clay used for wall primer, powder coating material, tile adhesive, self-leveling cement, and dry-mixed cement mortar applications The product portfolio of the company includes Portland blast furnace cement, Portland cement, Hearthstone powder. The company's revenue is mainly from three lines of business such as Cement business, Construction materials business, and Engineering and construction business.
82GF Score

Get the complete analysis for TPE:8463

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

NT$21.20
Price
NT$27.63
GF Value