Ta Yih Industrial Co (TPE:1521) E10: NT$3.67 (As of Dec. 2025)


TPE:1521 Ta Yih Industrial Co Ltd TPE:1521
73 GF Score
Price NT$25.30
GF Value NT$27.73
Valuation Fairly Valued
! 4 Warning Signs
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What is Ta Yih Industrial Co E10?

Ta Yih Industrial Co TPE:1521 -1.17% 73 E10 is NT$3.67 as of Dec. 2025. GuruFocus rates TPE:1521 with a GF Score™ of 73/100 and a GF Value™ of NT$27.73 (Fairly Valued). The stock has 4 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.

Ta Yih Industrial Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$0.530. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$3.67 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Ta Yih Industrial Co's average E10 Growth Rate was -14.10% per year. During the past 3 years, the average E10 Growth Rate was -9.70% per year. During the past 5 years, the average E10 Growth Rate was -6.00% 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 Ta Yih Industrial Co was -2.60% per year. The lowest was -9.70% per year. And the median was -4.05% per year.

As of today (2026-07-02), Ta Yih Industrial Co's current stock price is NT$25.30. Ta Yih Industrial Co's E10 for the quarter that ended in Dec. 2025 was NT$3.67. Ta Yih Industrial Co's Shiller PE Ratio of today is 6.89.

During the past 13 years, the highest Shiller PE Ratio of Ta Yih Industrial Co was 12.15. The lowest was 5.84. And the median was 8.01.


Ta Yih Industrial Co  (TPE:1521) 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.

Ta Yih Industrial Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=25.30/3.67
=6.89

* 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 Ta Yih Industrial Co was 12.15. The lowest was 5.84. And the median was 8.01.


Be Aware

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


Ta Yih Industrial Co E10 Related Terms


Ta Yih Industrial Co E10 Historical Data

* Premium members only.

The historical data trend for Ta Yih Industrial 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.

Ta Yih Industrial Co E10 Chart

Ta Yih Industrial 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 5.02 4.98 4.67 4.27 3.67

Ta Yih Industrial 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 4.27 4.09 3.92 3.76 3.67

TPE:1521 vs ORLY, AZO: E10 Comparison

For the Auto Parts subindustry, Ta Yih Industrial 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.


Ta Yih Industrial Co Shiller PE Ratio vs Vehicles & Parts Industry

For the Vehicles & Parts industry and Consumer Cyclical sector, Ta Yih Industrial Co's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Ta Yih Industrial Co's Shiller PE Ratio falls into.


TPE:1521
73GF Score
Ta Yih Industrial Co Ltd TPE:1521
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ta Yih Industrial 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, Ta Yih Industrial 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)
=0.53/324.0540*324.0540
=0.530

Current CPI (Dec. 2025) = 324.0540.

Ta Yih Industrial Co Quarterly Data

per share eps CPI Adj_EPS
201603 2.050 238.132 2.790
201606 1.500 241.018 2.017
201609 1.030 241.428 1.383
201612 1.940 241.432 2.604
201703 1.820 243.801 2.419
201706 1.630 244.955 2.156
201709 1.550 246.819 2.035
201712 1.540 246.524 2.024
201803 1.270 249.554 1.649
201806 1.390 251.989 1.788
201809 0.580 252.439 0.745
201812 0.950 251.233 1.225
201903 1.500 254.202 1.912
201906 1.540 256.143 1.948
201909 1.030 256.759 1.300
201912 0.670 256.974 0.845
202003 0.840 258.115 1.055
202006 0.230 257.797 0.289
202009 0.220 260.280 0.274
202012 0.800 260.474 0.995
202103 0.280 264.877 0.343
202106 0.460 271.696 0.549
202109 0.110 274.310 0.130
202112 0.220 278.802 0.256
202203 0.270 287.504 0.304
202206 0.290 296.311 0.317
202209 0.720 296.808 0.786
202212 -0.110 296.797 -0.120
202303 0.250 301.836 0.268
202306 0.230 305.109 0.244
202309 0.770 307.789 0.811
202312 -0.690 306.746 -0.729
202403 0.420 312.332 0.436
202406 0.460 314.175 0.474
202409 -0.010 315.301 -0.010
202412 0.290 315.605 0.298
202503 0.600 319.799 0.608
202506 -0.380 322.561 -0.382
202509 0.120 324.800 0.120
202512 0.530 324.054 0.530

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$3.67 mean?
Ta Yih Industrial Co (TPE:1521) has a E10 of NT$3.67 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Ta Yih Industrial Co and its competitors.
Is Ta Yih Industrial Co's E10 too high?
Ta Yih Industrial Co's current E10 is NT$3.67. Overall, Ta Yih Industrial Co has a GF Score™ of 73/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Ta Yih Industrial Co's E10 compare to ORLY and AZO?
Ta Yih Industrial Co's E10 of NT$3.67 can be compared against companies in the Vehicles & Parts 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 Vehicles & Parts company?
A good E10 depends on the Vehicles & Parts 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 Ta Yih Industrial Co and its competitors. Ta Yih Industrial Co's current E10 is NT$3.67. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ta Yih Industrial Co stock overvalued right now?
Based on GuruFocus' analysis, Ta Yih Industrial Co (TPE:1521) is currently considered Fairly Valued. The stock's GF Value™ is NT$27.73, compared to a current price of NT$25.30 — trading 8.8% below its estimated fair value. The current E10 is NT$3.67. Ta Yih Industrial Co's overall GF Score™ is 73/100 with 4 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 Ta Yih Industrial Co (TPE:1521), the current E10 is NT$3.67 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 Ta Yih Industrial Co (TPE:1521) Overvalued in 2026?

Based on GuruFocus' analysis, Ta Yih Industrial Co stock appears to be undervalued. The current stock price of NT$25.30 is trading 8.8% below its estimated GF Value™ of NT$27.73. GuruFocus considers Ta Yih Industrial Co to be Fairly Valued.

Key valuation signals for TPE:1521:

  • E10: NT$3.67
  • GF Value™: NT$27.73 vs. price of NT$25.30 (8.8% below fair value)
  • GF Score™: 73/100 with 4 warning signs

No single metric tells the full story. See the TPE:1521 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ta Yih Industrial Co Business Description

Address No. 11, Shin-Sin Road, An-Ping Industrial District, Zhangnan Village, Tainan, TWN, 70268
Ta Yih Industrial Co Ltd mainly sells, manufactures, and processes automobile parts, motorcycle parts, railway vehicle parts, transportation machinery, industrial plastic parts, as well as invest in related industries. Geographically, it operates in Taiwan; United States; Japan; China and Other Countries, of which Taiwan generates maximum revenue.
73GF Score

Get the complete analysis for TPE:1521

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

NT$25.30
Price
NT$27.73
GF Value