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.
Gem DiamondsGMDMF 3-Year Share Buyback Ratio is -0.10 as of Dec. 2025. The stock has 8 warning signs investors should review. Among 2,170 Metals & Mining companies, Gem Diamonds ranks better than 95.25% on this metric.
Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.
3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. A positive ratio may indicate share buybacks over the period, while a zero or negative ratio may reflect no repurchases or potential share issuance. Gem Diamonds's current 3-Year Share Buyback Ratio was -0.10%.
The historical rank and industry rank for Gem Diamonds's 3-Year Share Buyback Ratio or its related term are showing as below:
GMDMF'
s 3-Year Share Buyback Ratio Range Over the Past 10 Years
Min: -30.4 Med: -0.1 Max: 0.2
Current: -0.1
During the past 13 years, Gem Diamonds's highest 3-Year Share Buyback Ratio was 0.20%. The lowest was -30.40%. And the median was -0.10%.
GMDMF's 3-Year Share Buyback Ratio is ranked better than 95.25% of 2170
companies
in the Metals & Mining industry
Industry Median: -17.7
vs GMDMF: -0.10
Gem Diamonds (OTCPK:GMDMF) 3-Year Share Buyback Ratio Explanation
A negative number means the company might be issuing new shares. A positive number indicates that the company is buying back shares.
Be Aware
Investors usually like share buybacks. But as pointed by Warren Buffett, only if a company buys back shares at the prices below the stock's intrinsic value, it rewards remaining shareholders. If a company buys its overvalued stocks back, it destroys shareholder value.
Gem Diamonds 3-Year Share Buyback Ratio Related Terms
GMDMF vs HL: 3-Year Share Buyback Ratio Comparison
For the Other Precious Metals & Mining subindustry, Gem Diamonds's 3-Year Share Buyback Ratio, along with its competitors' market caps and 3-Year Share Buyback 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.
Gem Diamonds 3-Year Share Buyback Ratio vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Gem Diamonds's 3-Year Share Buyback Ratio distribution charts can be found below:
* The bar in red indicates where Gem Diamonds's 3-Year Share Buyback Ratio falls into.
Gem Diamonds 3-Year Share Buyback Ratio Calculation
This is the annualized percentage change in shares outstanding from three years ago to the current year. The annualized percentage change is calculated with expontential compound based on the latest four years of annual data on Shares Outstanding (EOP).
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 average dividends per share growth rate.
What does a 3-Year Share Buyback Ratio of -0.10 mean?
Gem Diamonds (GMDMF) has a 3-Year Share Buyback Ratio of -0.10 as of Dec. 2025. The 3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. View historical data for Gem Diamonds and its competitors. According to the industry distribution chart, Gem Diamonds ranks #103 out of 2170 companies in the Metals & Mining industry, placing it in the top 4.7%.
Is Gem Diamonds' 3-Year Share Buyback Ratio too high?
Gem Diamonds' current 3-Year Share Buyback Ratio is -0.10. Based on the distribution chart, Gem Diamonds ranks #103 out of 2170 companies in the Metals & Mining industry, which is in the top quartile — a strong position relative to peers.
How does Gem Diamonds' 3-Year Share Buyback Ratio compare to HL?
According to the Metals & Mining industry distribution chart, Gem Diamonds ranks #103 out of 2170 companies for 3-Year Share Buyback Ratio. This places Gem Diamonds in the top 5% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-Year Share Buyback Ratio for a Metals & Mining company?
A good 3-Year Share Buyback Ratio depends on the Metals & Mining industry context. However, 3-Year Share Buyback Ratio 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 3-Year Share Buyback Ratio mean?
A high 3-Year Share Buyback Ratio can signal that a stock is expensive relative to its fundamentals. The 3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. View historical data for Gem Diamonds and its competitors. Gem Diamonds's current 3-Year Share Buyback Ratio is -0.10. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Gem Diamonds stock overvalued right now?
Based on GuruFocus' analysis, Gem Diamonds (GMDMF) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.03, compared to a current price of $0.11 — trading 277% above its estimated fair value. The current 3-Year Share Buyback Ratio is -0.10. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year Share Buyback Ratio calculated?
3-Year Share Buyback Ratio is calculated from a company's financial statements. For Gem Diamonds (GMDMF), the current 3-Year Share Buyback Ratio is -0.10 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.
Gem Diamonds Ltd is a United Kingdom-based company engaged in the exploration and development of diamond mines. The company's geographical segments include Lesotho (diamond mining activities); Belgium (sales, marketing, and manufacturing of diamonds); and BVI, RSA, the UK, and Cyprus (technical and administrative services) and Botswana (diamond mining activities, currently on care and maintenance). It generates maximum revenue from the Belgium region. Its projects include Letseng Diamond mine and Ghaghoo Diamond mine. The company's revenue is derived from mining activities, polished manufacturing margins, and diamond analysis and manufacturing services.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
GMDMF has been successfully added to your 
