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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 Sun Brothers Development 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 Sun Brothers Development Co was 4.69. The lowest was 0.42. And the median was 0.87.
ROCO:3489's Price-to-Graham-Number is not ranked *
in the Real Estate industry.
Industry Median: 0.73 * 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.
Sun Brothers Development Co (ROCO:3489) 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.
Sun Brothers Development Co's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Jun. 2026 )
=
23.05
/
0.00
=
573,353,430.63
* 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.
Sun Brothers Development Co Graham Number Related Terms
Sun Brothers Development 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.
Sun Brothers Development Co Graham Number Competitor Comparison
For the Real Estate - Development subindustry, Sun Brothers Development 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.
Sun Brothers Development Co Price-to-Graham-Number vs Real Estate Industry
For the Real Estate industry and Real Estate sector, Sun Brothers Development Co's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where Sun Brothers Development 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.
Sun Brothers Development Co (ROCO:3489) has a Graham Number of NT$N/A as of Jun. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Sun Brothers Development Co and its competitors. According to the industry distribution chart, Sun Brothers Development Co ranks #999999 out of 1164 companies in the Real Estate industry.
Is Sun Brothers Development Co's Graham Number too high?
Sun Brothers Development Co's current Graham Number is NT$N/A. Based on the distribution chart, Sun Brothers Development Co ranks #999999 out of 1164 companies in the Real Estate industry, which is in the bottom quartile relative to peers. Overall, Sun Brothers Development Co has a GF Score™ of 45/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sun Brothers Development Co's Graham Number compare to competitors?
According to the Real Estate industry distribution chart, Sun Brothers Development Co ranks #999999 out of 1164 companies for Graham Number. This places Sun Brothers Development Co in the lower half of its industry. The industry median Graham Number is 0.73. 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 Real Estate company?
The median Graham Number among Real Estate companies is 0.73, based on 1,164 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 Sun Brothers Development Co and its competitors. For the Real Estate industry, the median Graham Number is 0.73 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Sun Brothers Development 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 Sun Brothers Development Co stock overvalued right now?
Based on GuruFocus' analysis, Sun Brothers Development Co (ROCO:3489) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$18.88, compared to a current price of NT$23.05 — trading 22.1% above its estimated fair value. The current Graham Number is NT$N/A. Sun Brothers Development Co's overall GF Score™ is 45/100 with 7 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 Sun Brothers Development Co (ROCO:3489), 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 Sun Brothers Development Co (ROCO:3489) Overvalued in 2026?
Based on GuruFocus' analysis, Sun Brothers Development Co stock appears to be overvalued.
The current stock price of NT$23.05 is trading 22.1% above its estimated GF Value™ of NT$18.88.
GuruFocus considers Sun Brothers Development Co to be Modestly Overvalued.
Key valuation signals for ROCO:3489:
Graham Number: NT$N/A
GF Value™: NT$18.88 vs. price of NT$23.05 (22.1% above fair value)
No single metric tells the full story. See the ROCO:3489 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Sun Brothers Development Co Ltd is engaged in wholesale of building materials, developing, constructing, leasing and selling for residential, commercial or industrial buildings and others. It is also involved in the development and construction of collective housing and public works contract construction. The company's segments are: Real property section, and Construction section. It derives revenue from Construction segment.
45GF Score
Get the complete analysis for ROCO:3489
Graham Number is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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