Edison Opto (TPE:3591) E10: NT$-0.26 (As of Dec. 2025)


TPE:3591 Edison Opto Corp TPE:3591
76 GF Score
Price NT$26.10
GF Value NT$26.79
Valuation Fairly Valued
! 9 Warning Signs
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What is Edison Opto E10?

Edison Opto TPE:3591 +0.19% 76 E10 is NT$-0.26 as of Dec. 2025. GuruFocus rates TPE:3591 with a GF Score™ of 76/100 and a GF Value™ of NT$26.79 (Fairly Valued). The stock has 9 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.

Edison Opto's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$-0.130. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$-0.26 for the trailing ten years ended in Dec. 2025.

During the past 3 years, the average E10 Growth Rate was 27.40% per year. During the past 5 years, the average E10 Growth Rate was 12.60% 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 Edison Opto was 27.40% per year. The lowest was -2.90% per year. And the median was 16.60% per year.

As of today (2026-07-08), Edison Opto's current stock price is NT$26.10. Edison Opto's E10 for the quarter that ended in Dec. 2025 was NT$-0.26. Edison Opto's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Edison Opto was 1240.90. The lowest was 28.87. And the median was 65.44.


Edison Opto  (TPE:3591) 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 Edison Opto was 1240.90. The lowest was 28.87. And the median was 65.44.


Be Aware

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


Edison Opto E10 Related Terms


Edison Opto E10 Historical Data

* Premium members only.

The historical data trend for Edison Opto'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.

Edison Opto E10 Chart

Edison Opto 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 -0.62 -0.68 -0.49 -0.36 -0.26

Edison Opto 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 -0.36 -0.36 -0.36 -0.38 -0.26

TPE:3591 vs APH, GLW: E10 Comparison

For the Electronic Components subindustry, Edison Opto'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.


Edison Opto Shiller PE Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Edison Opto's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Edison Opto's Shiller PE Ratio falls into.


TPE:3591
76GF Score
Edison Opto Corp TPE:3591
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Edison Opto 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, Edison Opto'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)
=-0.13/324.0540*324.0540
=-0.130

Current CPI (Dec. 2025) = 324.0540.

Edison Opto Quarterly Data

per share eps CPI Adj_EPS
201603 -0.247 238.132 -0.336
201606 -0.409 241.018 -0.550
201609 0.152 241.428 0.204
201612 -0.171 241.432 -0.230
201703 -0.190 243.801 -0.253
201706 -0.200 244.955 -0.265
201709 -0.304 246.819 -0.399
201712 -0.789 246.524 -1.037
201803 0.010 249.554 0.013
201806 0.124 251.989 0.159
201809 0.181 252.439 0.232
201812 -0.038 251.233 -0.049
201903 0.048 254.202 0.061
201906 0.029 256.143 0.037
201909 -0.048 256.759 -0.061
201912 -2.301 256.974 -2.902
202003 -0.067 258.115 -0.084
202006 0.095 257.797 0.119
202009 0.209 260.280 0.260
202012 0.086 260.474 0.107
202103 0.257 264.877 0.314
202106 0.276 271.696 0.329
202109 0.180 274.310 0.213
202112 0.190 278.802 0.221
202203 0.120 287.504 0.135
202206 0.120 296.311 0.131
202209 0.150 296.808 0.164
202212 -0.200 296.797 -0.218
202303 0.100 301.836 0.107
202306 0.100 305.109 0.106
202309 0.110 307.789 0.116
202312 0.040 306.746 0.042
202403 0.190 312.332 0.197
202406 0.320 314.175 0.330
202409 0.220 315.301 0.226
202412 0.261 315.605 0.268
202503 0.090 319.799 0.091
202506 -0.120 322.561 -0.121
202509 -0.180 324.800 -0.180
202512 -0.130 324.054 -0.130

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$-0.26 mean?
Edison Opto (TPE:3591) has a E10 of NT$-0.26 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Edison Opto and its competitors.
Is Edison Opto's E10 too high?
Edison Opto's current E10 is NT$-0.26. Overall, Edison Opto has a GF Score™ of 76/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Edison Opto's E10 compare to APH and GLW?
Edison Opto's E10 of NT$-0.26 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 Edison Opto and its competitors. Edison Opto's current E10 is NT$-0.26. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Edison Opto stock overvalued right now?
Based on GuruFocus' analysis, Edison Opto (TPE:3591) is currently considered Fairly Valued. The stock's GF Value™ is NT$26.79, compared to a current price of NT$26.10 — trading 2.6% below its estimated fair value. The current E10 is NT$-0.26. Edison Opto's overall GF Score™ is 76/100 with 9 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 Edison Opto (TPE:3591), the current E10 is NT$-0.26 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 Edison Opto (TPE:3591) Overvalued in 2026?

Based on GuruFocus' analysis, Edison Opto stock appears to be undervalued. The current stock price of NT$26.10 is trading 2.6% below its estimated GF Value™ of NT$26.79. GuruFocus considers Edison Opto to be Fairly Valued.

Key valuation signals for TPE:3591:

  • E10: NT$-0.26
  • GF Value™: NT$26.79 vs. price of NT$26.10 (2.6% below fair value)
  • GF Score™: 76/100 with 9 warning signs

No single metric tells the full story. See the TPE:3591 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Edison Opto Business Description

Address Qiaohe Road, 17th Floor, No. 17, Zhonghe District, New Taipei, TWN, 235029
Edison Opto Corp is engaged in manufacturing, selling, researching, and developing LED components, modules, and finished products in general lighting and automotive lighting areas. The company's operating segments include The Company; Edison Opto (Dong Guan) Co. Ltd; Yangzhou Edison Opto Corporation; Yangzhou Edison-Litek Opto Corporation; Edison-Litek Opto Corporation, and other subsidiaries. It generates maximum revenue from the Company segment.
76GF Score

Get the complete analysis for TPE:3591

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

NT$26.10
Price
NT$26.79
GF Value