Young Optics (TPE:3504) E10: NT$-0.73 (As of Jun. 2026)

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Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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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.

TPE:3504 Young Optics Inc TPE:3504
66 GF Score
Price NT$80.70
GF Value NT$57.74
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Young Optics E10?

Young Optics TPE:3504 +3.46% 66 E10 is NT$-0.73 as of Jun. 2026. GuruFocus rates TPE:3504 with a GF Score™ of 66/100 and a GF Value™ of NT$57.74 (Significantly Overvalued). The stock has 2 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.

Young Optics's adjusted earnings per share data for the three months ended in Jun. 2026 was NT$0.050. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$-0.73 for the trailing ten years ended in Jun. 2026.

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 Young Optics was -31.20% per year. The lowest was -47.50% per year. And the median was -39.35% per year.

As of today (2026-08-25), Young Optics's current stock price is NT$80.70. Young Optics's E10 for the quarter that ended in Jun. 2026 was NT$-0.73. Young Optics's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Young Optics was 680.00. The lowest was 20.78. And the median was 66.54.


Young Optics  (TPE:3504) 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.

During the past 13 years, the highest Shiller P/E Ratio of Young Optics was 680.00. The lowest was 20.78. And the median was 66.54.


Be Aware

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


Young Optics E10 Related Terms


Young Optics E10 Historical Data

* Premium members only.

The historical data trend for Young Optics'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.

Young Optics E10 Chart

Young Optics 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 0.68 0.28 -0.25 -0.71 -0.89

Young Optics 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 -0.78 -0.87 -0.89 -0.82 -0.73

TPE:3504 vs VRT, BE: E10 Comparison

For the Electrical Equipment & Parts subindustry, Young Optics'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.


Young Optics Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Young Optics's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Young Optics's Shiller PE Ratio falls into.


TPE:3504
66GF Score
Young Optics Inc TPE:3504
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Young Optics 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, Young Optics'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)
=0.05/333.9520*333.9520
=0.050

Current CPI (Jun. 2026) = 333.9520.

Young Optics Quarterly Data

per share eps CPI Adj_EPS
201609 -0.250 241.428 -0.346
201612 -0.230 241.432 -0.318
201703 -0.580 243.801 -0.794
201706 -0.390 244.955 -0.532
201709 -0.340 246.819 -0.460
201712 0.000 246.524 0.000
201803 0.040 249.554 0.054
201806 0.460 251.989 0.610
201809 1.010 252.439 1.336
201812 0.060 251.233 0.080
201903 0.050 254.202 0.066
201906 0.280 256.143 0.365
201909 0.120 256.759 0.156
201912 -0.410 256.974 -0.533
202003 -0.750 258.115 -0.970
202006 -0.310 257.797 -0.402
202009 -0.420 260.280 -0.539
202012 -0.590 260.474 -0.756
202103 -0.280 264.877 -0.353
202106 0.110 271.696 0.135
202109 0.300 274.310 0.365
202112 0.100 278.802 0.120
202203 0.190 287.504 0.221
202206 0.430 296.311 0.485
202209 0.570 296.808 0.641
202212 -0.620 296.797 -0.698
202303 -0.750 301.836 -0.830
202306 -0.590 305.109 -0.646
202309 -0.590 307.789 -0.640
202312 -0.590 306.746 -0.642
202403 -2.010 312.332 -2.149
202406 -0.510 314.175 -0.542
202409 -0.070 315.301 -0.074
202412 0.420 315.605 0.444
202503 0.040 319.799 0.042
202506 0.030 322.561 0.031
202509 -0.090 324.800 -0.093
202512 -0.060 324.054 -0.062
202603 0.050 330.213 0.051
202606 0.050 333.952 0.050

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$-0.73 mean?
Young Optics (TPE:3504) has a E10 of NT$-0.73 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Young Optics and its competitors.
Is Young Optics' E10 too high?
Young Optics' current E10 is NT$-0.73. Overall, Young Optics has a GF Score™ of 66/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Young Optics' E10 compare to VRT and BE?
Young Optics' E10 of NT$-0.73 can be compared against companies in the Industrial Products 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 an Industrial Products company?
A good E10 depends on the Industrial Products 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 Young Optics and its competitors. Young Optics's current E10 is NT$-0.73. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Young Optics stock overvalued right now?
Based on GuruFocus' analysis, Young Optics (TPE:3504) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$57.74, compared to a current price of NT$80.70 — trading 39.8% above its estimated fair value. The current E10 is NT$-0.73. Young Optics' overall GF Score™ is 66/100 with 2 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 Young Optics (TPE:3504), the current E10 is NT$-0.73 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 Young Optics (TPE:3504) Overvalued in 2026?

Based on GuruFocus' analysis, Young Optics stock appears to be overvalued. The current stock price of NT$80.70 is trading 39.8% above its estimated GF Value™ of NT$57.74. GuruFocus considers Young Optics to be Significantly Overvalued.

Key valuation signals for TPE:3504:

  • E10: NT$-0.73
  • GF Value™: NT$57.74 vs. price of NT$80.70 (39.8% above fair value)
  • GF Score™: 66/100 with 2 warning signs

No single metric tells the full story. See the TPE:3504 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Young Optics Business Description

Address No.7, Hsin-Ann Road, Hsinchu Science Park, Hsin-Chu, TWN
Young Optics Inc mainly engages in research, design, manufacturing and sales of optical components, optical engines, and key components. The Group is mainly engaged in the development, market expansion, and manufacture of optical related products. The company has a single operating segment. The product portfolio of the company comprises mold machining, metal machining, optical components, Engine, Module, etc. The company has presence in Mainland China, Southeast Asia, Europe, United States, Taiwan, and Others.
66GF Score

Get the complete analysis for TPE:3504

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

NT$80.70
Price
NT$57.74
GF Value