Excellence Optoelectronics Holding Co (TPE:3717) Graham Number: NT$24.79 (As of Jun. 2026) — 1376% Above Median

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
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:3717 Excellence Optoelectronics Holding Co TPE:3717
8 GF Score
Price NT$22.15
! 6 Warning Signs
View Full Analysis

What is Excellence Optoelectronics Holding Co Graham Number?

Excellence Optoelectronics Holding Co TPE:3717 -0.23% 8 Graham Number is NT$24.79 as of Jun. 2026, which is 100% below its 10-year median of 1.68. GuruFocus rates TPE:3717 with a GF Score™ of 8/100. The stock has 6 warning signs investors should review. Among 1,650 Hardware companies, Excellence Optoelectronics Holding Co ranks better than 78.91% on this metric.

Graham Number is a figure that measures a stock's fundamental value by taking into account the company's earnings per share and book value per share. The Graham number is the upper bound of the price range that a defensive investor should pay for the stock. According to the theory, any stock price below the Graham number is considered undervalued, and thus worth investing in.

As of today (2026-08-21), the stock price of Excellence Optoelectronics Holding Co is NT$22.15. Excellence Optoelectronics Holding Co's graham number for the quarter that ended in Jun. 2026 was NT$24.79. Therefore, Excellence Optoelectronics Holding Co's Price to Graham Number ratio for today is 0.89.

The historical rank and industry rank for Excellence Optoelectronics Holding Co's Graham Number or its related term are showing as below:

TPE:3717' s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.89   Med: 1.68   Max: 2.85
Current: 0.89

During the past 2 years, the highest Price to Graham Number ratio of Excellence Optoelectronics Holding Co was 2.85. The lowest was 0.89. And the median was 1.68.

TPE:3717's Price-to-Graham-Number is ranked better than
78.91% of 1650 companies
in the Hardware industry
Industry Median: 1.8 vs TPE:3717: 0.89

Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.


Excellence Optoelectronics Holding Co  (TPE:3717) Graham Number Explanation

Ben Graham actually did not publish a formula like this. But he wrote in The Intelligent Investor (1948 version) regarding to the criteria for purchases:

Current price should not be more than 15 times average earnings of the past three years.

Current price should not be more than 1.5 times the book value last reported. However, a multiplier of earnings below 15 could justify a correspondingly higher multiplier of assets. As a rule of thumb we suggest that the product of the multiplier times the ratio of price to book value should not exceed 22.5. (This figure corresponds to 15 times earnings and 1.5 times book value. It would admit an issue selling at only 9 times earnings and 2.5 times asset value, etc.)

Unlike valuation methods such as DCF or Discounted Earnings, the Graham number does not take growth into the valuation. Unlike the valuation methods based on book value alone, it takes into account the earnings power. Therefore, the Graham Number is a combination of asset valuation and earnings power valuation.

In general, the Graham number is a very conservative way of valuing a stock. It cannot be applied to companies with negative book values.

Excellence Optoelectronics Holding Co's Price to Graham number Ratio for today is calculated as

Price to Graham number=Share Price (Today)/Graham number (Q: Jun. 2026 )
=22.15/24.79
=0.89

* 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.


Be Aware

Please keep these in mind:

1. Graham Number does not take growth into account. Therefore it underestimates the values of the companies that have good earnings growth. We feel that if the earnings per share grows more than 10% a year, Graham Number underestimates the value.
2. Graham Number punishes the companies that have temporarily low earnings. Therefore, an average of earnings makes more sense in the calculation of Graham Number.
3. Graham Numbers underestimates companies that are light with book.


Excellence Optoelectronics Holding Co Graham Number Related Terms


Excellence Optoelectronics Holding Co Graham Number Historical Data

* Premium members only.

The historical data trend for Excellence Optoelectronics Holding Co's Graham Number 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.

Excellence Optoelectronics Holding Co Graham Number Chart

Excellence Optoelectronics Holding Co Annual Data
Trend Dec24 Dec25
Graham Number
12.93 5.77

Excellence Optoelectronics Holding Co Quarterly Data
Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Graham Number Get a 7-Day Free Trial 0.00 0.00 5.86 12.87 24.79

TPE:3717 vs APH, GLW, TEL: Graham Number Comparison

For the Electronic Components subindustry, Excellence Optoelectronics Holding Co's Price-to-Graham-Number, along with its competitors' market caps and Price-to-Graham-Number 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.


Excellence Optoelectronics Holding Co Price-to-Graham-Number vs Hardware Industry

For the Hardware industry and Technology sector, Excellence Optoelectronics Holding Co's Price-to-Graham-Number distribution charts can be found below:

* The bar in red indicates where Excellence Optoelectronics Holding Co's Price-to-Graham-Number falls into.


TPE:3717
8GF Score
Excellence Optoelectronics Holding Co TPE:3717
Graham Number is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Excellence Optoelectronics Holding Co Graham Number Calculation

Graham Number is a concept based on Ben Graham's conservative valuation of companies.

Excellence Optoelectronics Holding Co's Graham Number for the fiscal year that ended in Dec. 2025 is calculated as

Graham Number
=sqrt of (22.5* Tangible Book per Share *EPS without NRI)
=sqrt of (22.5*14.944*0.099)
=5.77

Excellence Optoelectronics Holding Co's Graham Number for the quarter that ended in Jun. 2026 is calculated as

Graham Number
=sqrt of (22.5*Tangible Book per Share*EPS without NRI (TTM))
=sqrt of (22.5*16.489*1.656)
=24.79

* 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.

Frequently Asked Questions Learn more about Graham Number →
What does a Graham Number of NT$24.79 mean?
Excellence Optoelectronics Holding Co (TPE:3717) has a Graham Number of NT$24.79 as of Jun. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Excellence Optoelectronics Holding Co and its competitors. This is 1376% above median its historical median of 1.68. Over the past decade, Excellence Optoelectronics Holding Co's Graham Number has ranged from 0.89 to 2.85. According to the industry distribution chart, Excellence Optoelectronics Holding Co ranks #348 out of 1650 companies in the Hardware industry, placing it in the top 21.1%.
Is Excellence Optoelectronics Holding Co's Graham Number too high?
Excellence Optoelectronics Holding Co's current Graham Number of NT$24.79 is 1376% above median its 10-year median of 1.68. Over the past 10 years, this metric has ranged from a low of 0.89 to a high of 2.85. Based on the distribution chart, Excellence Optoelectronics Holding Co ranks #348 out of 1650 companies in the Hardware industry, which is in the top quartile — a strong position relative to peers. Overall, Excellence Optoelectronics Holding Co has a GF Score™ of 8/100, reflecting its overall financial health beyond just this single metric.
How does Excellence Optoelectronics Holding Co's Graham Number compare to APH and GLW?
According to the Hardware industry distribution chart, Excellence Optoelectronics Holding Co ranks #348 out of 1650 companies for Graham Number. This places Excellence Optoelectronics Holding Co in the top 21% of its industry — outperforming the majority of peers. The industry median Graham Number is 1.80. Historically, Excellence Optoelectronics Holding Co's own Graham Number has ranged from 0.89 to 2.85 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Graham Number for a Hardware company?
The median Graham Number among Hardware companies is 1.80, based on 1,650 companies in the industry. Companies in the top quartile (top 25%) have a Graham Number significantly above this median, while those in the bottom quartile fall well below. However, Graham Number 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 Graham Number mean?
A high Graham Number can signal that a stock is expensive relative to its fundamentals. The Graham Number values a company based on its per-share earnings and book value. View historical data on Excellence Optoelectronics Holding Co and its competitors. For the Hardware industry, the median Graham Number is 1.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Excellence Optoelectronics Holding Co's current Graham Number is NT$24.79, which is 1376% above median its own 10-year median of 1.68. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Excellence Optoelectronics Holding Co stock overvalued right now?
Excellence Optoelectronics Holding Co (TPE:3717) has a current Graham Number of NT$24.79. The current Graham Number is NT$24.79, which is 1376% above median its 10-year median of 1.68. Excellence Optoelectronics Holding Co's overall GF Score™ is 8/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Graham Number calculated?
Graham Number is calculated from a company's financial statements. For Excellence Optoelectronics Holding Co (TPE:3717), the current Graham Number is NT$24.79 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.

Excellence Optoelectronics Holding Co Business Description

Address No.2, Kedong 1st Road, Hsinchu Science Park, Miaoli County, Chunan, TWN, 35053
Excellence Optoelectronics Holding Co is a high technology-oriented company. It is a professional LED lamp manufacturer producing top quality of Super High Brightness LED lamps with AlInGaP and InGaN chip materials. It's subsidiaries nclude the design, development, testing, manufacturing of LED components, OEM/ODM LED modules and patented solution for the automotive market; LED traffic signals, LED street lighting, industrial lighting and LED consumer products for the energy-saving market; and the design, installation and construction of energy-saving products for government and public sector projects.
8GF Score

Get the complete analysis for TPE:3717

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

NT$22.15
Price