Ta-I Technology Co (TPE:2478) E10: NT$4.43 (As of Dec. 2025)


TPE:2478 Ta-I Technology Co Ltd TPE:2478
63 GF Score
Price NT$205.00
GF Value NT$55.91
Valuation Significantly Overvalued
! 8 Warning Signs
View Full Analysis

What is Ta-I Technology Co E10?

Ta-I Technology Co TPE:2478 -5.96% 63 E10 is NT$4.43 as of Dec. 2025. GuruFocus rates TPE:2478 with a GF Score™ of 63/100 and a GF Value™ of NT$55.91 (Significantly Overvalued). The stock has 8 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-I Technology Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$0.910. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$4.43 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Ta-I Technology Co's average E10 Growth Rate was 5.20% per year. During the past 3 years, the average E10 Growth Rate was 6.90% per year. During the past 5 years, the average E10 Growth Rate was 11.50% 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-I Technology Co was 15.90% per year. The lowest was 6.90% per year. And the median was 11.90% per year.

As of today (2026-06-29), Ta-I Technology Co's current stock price is NT$205.00. Ta-I Technology Co's E10 for the quarter that ended in Dec. 2025 was NT$4.43. Ta-I Technology Co's Shiller PE Ratio of today is 46.28.

During the past 13 years, the highest Shiller PE Ratio of Ta-I Technology Co was 52.82. The lowest was 9.36. And the median was 13.45.


Ta-I Technology Co  (TPE:2478) 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-I Technology Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=205.00/4.43
=46.28

* 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-I Technology Co was 52.82. The lowest was 9.36. And the median was 13.45.


Be Aware

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


Ta-I Technology Co E10 Related Terms


Ta-I Technology Co E10 Historical Data

* Premium members only.

The historical data trend for Ta-I Technology 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-I Technology Co E10 Chart

Ta-I Technology 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 3.10 3.63 3.94 4.21 4.43

Ta-I Technology 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 4.21 4.31 4.36 4.40 4.43

TPE:2478 vs APH, GLW: E10 Comparison

For the Electronic Components subindustry, Ta-I Technology 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-I Technology Co Shiller PE Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Ta-I Technology Co's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Ta-I Technology Co's Shiller PE Ratio falls into.


TPE:2478
63GF Score
Ta-I Technology Co Ltd TPE:2478
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ta-I Technology 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-I Technology 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)
=0.91/324.0540*324.0540
=0.910

Current CPI (Dec. 2025) = 324.0540.

Ta-I Technology Co Quarterly Data

per share eps CPI Adj_EPS
201603 0.293 238.132 0.399
201606 0.267 241.018 0.359
201609 0.307 241.428 0.412
201612 0.427 241.432 0.573
201703 0.253 243.801 0.336
201706 0.240 244.955 0.317
201709 0.400 246.819 0.525
201712 0.480 246.524 0.631
201803 0.187 249.554 0.243
201806 2.520 251.989 3.241
201809 3.660 252.439 4.698
201812 1.430 251.233 1.844
201903 0.540 254.202 0.688
201906 0.400 256.143 0.506
201909 0.860 256.759 1.085
201912 0.530 256.974 0.668
202003 1.650 258.115 2.072
202006 1.720 257.797 2.162
202009 0.920 260.280 1.145
202012 0.370 260.474 0.460
202103 1.730 264.877 2.117
202106 1.960 271.696 2.338
202109 1.590 274.310 1.878
202112 1.270 278.802 1.476
202203 1.560 287.504 1.758
202206 1.440 296.311 1.575
202209 1.090 296.808 1.190
202212 0.190 296.797 0.207
202303 0.570 301.836 0.612
202306 0.910 305.109 0.967
202309 0.840 307.789 0.884
202312 0.220 306.746 0.232
202403 0.920 312.332 0.955
202406 0.890 314.175 0.918
202409 0.400 315.301 0.411
202412 0.910 315.605 0.934
202503 0.870 319.799 0.882
202506 0.610 322.561 0.613
202509 1.040 324.800 1.038
202512 0.910 324.054 0.910

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$4.43 mean?
Ta-I Technology Co (TPE:2478) has a E10 of NT$4.43 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Ta-I Technology Co and its competitors.
Is Ta-I Technology Co's E10 too high?
Ta-I Technology Co's current E10 is NT$4.43. Overall, Ta-I Technology Co has a GF Score™ of 63/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Ta-I Technology Co's E10 compare to APH and GLW?
Ta-I Technology Co's E10 of NT$4.43 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 Ta-I Technology Co and its competitors. Ta-I Technology Co's current E10 is NT$4.43. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ta-I Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Ta-I Technology Co (TPE:2478) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$55.91, compared to a current price of NT$205.00 — trading 266.7% above its estimated fair value. The current E10 is NT$4.43. Ta-I Technology Co's overall GF Score™ is 63/100 with 8 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-I Technology Co (TPE:2478), the current E10 is NT$4.43 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-I Technology Co (TPE:2478) Overvalued in 2026?

Based on GuruFocus' analysis, Ta-I Technology Co stock appears to be overvalued. The current stock price of NT$205.00 is trading 266.7% above its estimated GF Value™ of NT$55.91. GuruFocus considers Ta-I Technology Co to be Significantly Overvalued.

Key valuation signals for TPE:2478:

  • E10: NT$4.43
  • GF Value™: NT$55.91 vs. price of NT$205.00 (266.7% above fair value)
  • GF Score™: 63/100 with 8 warning signs

No single metric tells the full story. See the TPE:2478 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ta-I Technology Co Business Description

Address No.4, Lane 17, Section 3, Nanshan Road, Luzhu District, Taoyuan, TWN
Ta-I Technology Co Ltd manufactures chip resistors in Taiwan. Its product portfolio comprises thick film resistors, thick film resistor networks, thick film integrated circuits, surface mount and assembly, and other electronic parts and components. The Group has only one reportable segment, that is the chip resistor product segment.
63GF Score

Get the complete analysis for TPE:2478

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

NT$205.00
Price
NT$55.91
GF Value