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.
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.
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.
The historical rank and industry rank for Jhen Vei Electronic Co's Graham Number or its related term are showing as below:
During the past 13 years, the highest Price to Graham Number ratio of Jhen Vei Electronic Co was 4.37. The lowest was 0.89. And the median was 1.79.
ROCO:3520's Price-to-Graham-Number is not ranked *
in the Hardware industry.
Industry Median: 1.785 * Ranked among companies with meaningful Price-to-Graham-Number only.
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
Jhen Vei Electronic Co (ROCO:3520) 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.
Jhen Vei Electronic Co's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Jun. 2026 )
=
17.40
/
N/A
=
N/A
* 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.
Jhen Vei Electronic Co Graham Number Related Terms
Jhen Vei Electronic Co Graham Number Historical Data
* 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.
ROCO:3520 vs APH, GLW, TEL: Graham Number Comparison
For the Electronic Components subindustry, Jhen Vei Electronic 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.
Jhen Vei Electronic Co Price-to-Graham-Number vs Hardware Industry
For the Hardware industry and Technology sector, Jhen Vei Electronic Co's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where Jhen Vei Electronic Co's Price-to-Graham-Number falls into.
* 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.
Jhen Vei Electronic Co (ROCO:3520) has a Graham Number of NT$N/A as of Jun. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Jhen Vei Electronic Co and its competitors. According to the industry distribution chart, Jhen Vei Electronic Co ranks #999999 out of 1654 companies in the Hardware industry.
Is Jhen Vei Electronic Co's Graham Number too high?
Jhen Vei Electronic Co's current Graham Number is NT$N/A. Based on the distribution chart, Jhen Vei Electronic Co ranks #999999 out of 1654 companies in the Hardware industry, which is in the bottom quartile relative to peers. Overall, Jhen Vei Electronic Co has a GF Score™ of 62/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Jhen Vei Electronic Co's Graham Number compare to APH and GLW?
According to the Hardware industry distribution chart, Jhen Vei Electronic Co ranks #999999 out of 1654 companies for Graham Number. This places Jhen Vei Electronic Co in the lower half of its industry. The industry median Graham Number is 1.79. 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 1.79, based on 1,654 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 Jhen Vei Electronic Co and its competitors. For the Hardware industry, the median Graham Number is 1.79 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Jhen Vei Electronic Co's current Graham Number is NT$N/A. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Jhen Vei Electronic Co stock overvalued right now?
Based on GuruFocus' analysis, Jhen Vei Electronic Co (ROCO:3520) is currently considered Possible Value Trap. The stock's GF Value™ is NT$27.09, compared to a current price of NT$17.40 — trading 35.8% below its estimated fair value. The current Graham Number is NT$N/A. Jhen Vei Electronic Co's overall GF Score™ is 62/100 with 10 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 Jhen Vei Electronic Co (ROCO:3520), the current Graham Number is NT$N/A 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 Jhen Vei Electronic Co (ROCO:3520) Overvalued in 2026?
Based on GuruFocus' analysis, Jhen Vei Electronic Co stock appears to be undervalued.
The current stock price of NT$17.40 is trading 35.8% below its estimated GF Value™ of NT$27.09.
GuruFocus considers Jhen Vei Electronic Co to be Possible Value Trap.
Key valuation signals for ROCO:3520:
Graham Number: NT$N/A
GF Value™: NT$27.09 vs. price of NT$17.40 (35.8% below fair value)
No single metric tells the full story. See the ROCO:3520 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Jhen Vei Electronic Co Ltd principal activities are the trading of plug connections, sockets, computer cables, import/export trade and the construction services of solar power plants. The products offered by the company are USB cables, Lightning Charging Cable, Signal cable, Power cord cable, RF Cable, SATA data cable, Car cable, SMT equipment process, Test equipment process, Assembly equipment process, Taichung Tainong Fresh Dairy Factory. Its segment includes the Electronics Component Department, Electronic Components Post-Processing Department, and Energy Components. The company generates maximum revenue from the Electronics Component Department segment. The company has presence in Taiwan, China, America, and Other countries. The company generates majority of revenue from China.
62GF Score
Get the complete analysis for ROCO:3520
Graham Number is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:3520 has been successfully added to your 
