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PT Black Diamond Resources Tbk has the GF Score of 20, which implies that the company
might have
Worst future performance potential, or not enough data.
The GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation, which has been found to be closely correlated to the long-term performances of stocks by backtesting from 2006 to 2021. The stocks with a higher GF Score generally generate higher returns than those with lower GF Scores. Therefore, when picking stocks, investors should invest in companies with high GF Scores. The GF Score ranges from 0 to 100, with 100 as the highest rank.
GF Score takes following five key aspects into consideration:
Each one of these components is ranked and the ranks also have positive correlation with the long term performances of stocks. The GF score is calculated using the five key aspects of analysis. Through backtesting, we know that each of these key aspects has a different impact on the stock price performance. Thus, they are weighted differently when calculating the total score. The Profitability Rank and the Growth Rank are weighted fully, while other parameters have less weight.
Based on research and backtesting result, GuruFocus believes PT Black Diamond Resources Tbk
might have
Worst future performance potential, or not enough data.
Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.
PT Black Diamond Resources Tbk (ISX:COAL) GF Score Explanation
Based on the historical long-term performances among five valuation aspects, the GF Score is found to be closely correlated to the long-term performances of stocks. It ranges from 0 to 100, with 100 as the highest. GuruFocus divided GF Score into following 5 categories:
GF Score
Performance Potential and All-in-One Screener Examples (1)
(1) These are some simple examples. You can access our GF Score filter under All-in-One Screener’s Fundamental tab.
PT Black Diamond Resources Tbk GF Score Related Terms
PT Black Diamond Resources Tbk GF Score Competitor Comparison
For the Thermal Coal subindustry, PT Black Diamond Resources Tbk's GF Score, along with its competitors' market caps and GF Score 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.
PT Black Diamond Resources Tbk GF Score vs Other Energy Sources Industry
For the Other Energy Sources industry and Energy sector, PT Black Diamond Resources Tbk's GF Score distribution charts can be found below:
* The bar in red indicates where PT Black Diamond Resources Tbk's GF Score falls into.
PT Black Diamond Resources Tbk (ISX:COAL) has a GF Score of 20 as of Jul. 21, 2026. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on PT Black Diamond Resources Tbk and its competitors. This is 150% above median its historical median of 8.00. Over the past decade, PT Black Diamond Resources Tbk's GF Score has ranged from 2.00 to 28.00.
Is PT Black Diamond Resources Tbk's GF Score too high?
PT Black Diamond Resources Tbk's current GF Score of 20 is 150% above median its 10-year median of 8.00. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 28.00. Overall, PT Black Diamond Resources Tbk has a GF Score™ of 20/100, reflecting its overall financial health beyond just this single metric.
How does PT Black Diamond Resources Tbk's GF Score compare to competitors?
PT Black Diamond Resources Tbk's GF Score of 20 can be compared against companies in the Other Energy Sources industry. Historically, PT Black Diamond Resources Tbk's own GF Score has ranged from 2.00 to 28.00 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 GF Score for an Other Energy Sources company?
A good GF Score depends on the Other Energy Sources industry context. However, GF Score 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 GF Score mean?
A high GF Score can signal that a stock is expensive relative to its fundamentals. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on PT Black Diamond Resources Tbk and its competitors. PT Black Diamond Resources Tbk's current GF Score is 20, which is 150% above median its own 10-year median of 8.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PT Black Diamond Resources Tbk stock overvalued right now?
PT Black Diamond Resources Tbk (ISX:COAL) has a current GF Score of 20. The current GF Score is 20, which is 150% above median its 10-year median of 8.00. PT Black Diamond Resources Tbk's overall GF Score™ is 20/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is GF Score calculated?
GF Score is calculated from a company's financial statements. For PT Black Diamond Resources Tbk (ISX:COAL), the current GF Score is 20 as of Jul. 21, 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.
PT Black Diamond Resources Tbk Business Description
PT Black Diamond Resources Tbk is a holding company, operates through its subsidiary, which is engaged in coal mining businesses, mining support activities, financial activities, and other mining and excavation investments that cannot be classified.
20GF Score
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