Tung Thih Electronic Co (ROCO:3552) E10: NT$3.91 (As of Dec. 2025)


ROCO:3552 Tung Thih Electronic Co Ltd ROCO:3552
64 GF Score
Price NT$47.50
GF Value NT$80.32
Valuation Significantly Undervalued
! 5 Warning Signs
View Full Analysis

What is Tung Thih Electronic Co E10?

Tung Thih Electronic Co ROCO:3552 64 E10 is NT$3.91 as of Dec. 2025. GuruFocus rates ROCO:3552 with a GF Score™ of 64/100 and a GF Value™ of NT$80.32 (Significantly 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.

Tung Thih Electronic Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$0.290. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$3.91 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Tung Thih Electronic Co's average E10 Growth Rate was -18.90% per year. During the past 3 years, the average E10 Growth Rate was -8.90% per year. During the past 5 years, the average E10 Growth Rate was -1.00% 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 Tung Thih Electronic Co was 6.60% per year. The lowest was -8.90% per year. And the median was 1.10% per year.

As of today (2026-07-08), Tung Thih Electronic Co's current stock price is NT$47.50. Tung Thih Electronic Co's E10 for the quarter that ended in Dec. 2025 was NT$3.91. Tung Thih Electronic Co's Shiller PE Ratio of today is 12.15.

During the past 13 years, the highest Shiller PE Ratio of Tung Thih Electronic Co was 70.46. The lowest was 5.45. And the median was 19.00.


Tung Thih Electronic Co  (ROCO:3552) 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.

Tung Thih Electronic Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=47.50/3.91
=12.15

* 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 Tung Thih Electronic Co was 70.46. The lowest was 5.45. And the median was 19.00.


Be Aware

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


Tung Thih Electronic Co E10 Related Terms


Tung Thih Electronic Co E10 Historical Data

* Premium members only.

The historical data trend for Tung Thih Electronic 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.

Tung Thih Electronic Co E10 Chart

Tung Thih Electronic 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 4.67 5.18 5.19 4.82 3.91

Tung Thih Electronic 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 4.82 4.73 4.54 4.28 3.91

ROCO:3552 vs ORLY, AZO: E10 Comparison

For the Auto Parts subindustry, Tung Thih Electronic 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.


Tung Thih Electronic Co Shiller PE Ratio vs Vehicles & Parts Industry

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

* The bar in red indicates where Tung Thih Electronic Co's Shiller PE Ratio falls into.


ROCO:3552
64GF Score
Tung Thih Electronic Co Ltd ROCO:3552
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Tung Thih Electronic 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, Tung Thih Electronic 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)
=0.29/324.0540*324.0540
=0.290

Current CPI (Dec. 2025) = 324.0540.

Tung Thih Electronic Co Quarterly Data

per share eps CPI Adj_EPS
201603 4.336 238.132 5.901
201606 2.753 241.018 3.701
201609 2.439 241.428 3.274
201612 2.806 241.432 3.766
201703 0.857 243.801 1.139
201706 1.198 244.955 1.585
201709 0.647 246.819 0.849
201712 1.696 246.524 2.229
201803 0.760 249.554 0.987
201806 0.003 251.989 0.004
201809 -2.194 252.439 -2.816
201812 -1.233 251.233 -1.590
201903 -0.420 254.202 -0.535
201906 -1.495 256.143 -1.891
201909 -1.722 256.759 -2.173
201912 1.687 256.974 2.127
202003 -1.014 258.115 -1.273
202006 -0.175 257.797 -0.220
202009 1.390 260.280 1.731
202012 2.649 260.474 3.296
202103 1.818 264.877 2.224
202106 1.023 271.696 1.220
202109 0.087 274.310 0.103
202112 1.827 278.802 2.124
202203 2.168 287.504 2.444
202206 0.699 296.311 0.764
202209 1.914 296.808 2.090
202212 1.512 296.797 1.651
202303 0.717 301.836 0.770
202306 0.490 305.109 0.520
202309 1.692 307.789 1.781
202312 1.038 306.746 1.097
202403 0.769 312.332 0.798
202406 0.298 314.175 0.307
202409 0.190 315.301 0.195
202412 0.220 315.605 0.226
202503 0.087 319.799 0.088
202506 0.087 322.561 0.087
202509 0.210 324.800 0.210
202512 0.290 324.054 0.290

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$3.91 mean?
Tung Thih Electronic Co (ROCO:3552) has a E10 of NT$3.91 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Tung Thih Electronic Co and its competitors.
Is Tung Thih Electronic Co's E10 too high?
Tung Thih Electronic Co's current E10 is NT$3.91. Overall, Tung Thih Electronic Co has a GF Score™ of 64/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Tung Thih Electronic Co's E10 compare to ORLY and AZO?
Tung Thih Electronic Co's E10 of NT$3.91 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 Tung Thih Electronic Co and its competitors. Tung Thih Electronic Co's current E10 is NT$3.91. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tung Thih Electronic Co stock overvalued right now?
Based on GuruFocus' analysis, Tung Thih Electronic Co (ROCO:3552) is currently considered Significantly Undervalued. The stock's GF Value™ is NT$80.32, compared to a current price of NT$47.50 — trading 40.9% below its estimated fair value. The current E10 is NT$3.91. Tung Thih Electronic Co's overall GF Score™ is 64/100 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 Tung Thih Electronic Co (ROCO:3552), the current E10 is NT$3.91 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 Tung Thih Electronic Co (ROCO:3552) Overvalued in 2026?

Based on GuruFocus' analysis, Tung Thih Electronic Co stock appears to be undervalued. The current stock price of NT$47.50 is trading 40.9% below its estimated GF Value™ of NT$80.32. GuruFocus considers Tung Thih Electronic Co to be Significantly Undervalued.

Key valuation signals for ROCO:3552:

  • E10: NT$3.91
  • GF Value™: NT$80.32 vs. price of NT$47.50 (40.9% below fair value)
  • GF Score™: 64/100 with 5 warning signs

No single metric tells the full story. See the ROCO:3552 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Tung Thih Electronic Co Business Description

Address Nanqing Road, No.9, Lane 1156, Luzhu District, Taoyuan, TWN, 338015
Tung Thih Electronic Co Ltd is a Taiwan-based automotive electronic products and components manufacturer. The company is engaged in manufacturing and marketing of ultrasonic parking assistance systems, vehicle anti-theft devices, car door lock actuators, interior rear mirror system with multiple functions, car video systems, wireless tire pressure monitor systems, Body Control Modules (BCM), vehicle electric peripherals, and others. It offers system enablers, ultrasonic systems, imaging systems, radar systems, and fusion systems. Geographically, the company operates in Taiwan, Asia, America, and Europe. It generates maximum revenue from Asia.
64GF Score

Get the complete analysis for ROCO:3552

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

NT$47.50
Price
NT$80.32
GF Value