Petra DiamondsPDLMF 43 WACC % is 11.33% as of Jun. 24, 2026, which is 52% above its 10-year median of 7.44. GuruFocus rates PDLMF with a GF Score™ of 43/100 and a GF Value™ of $1.03. The stock has 2 warning signs investors should review. Among 2,670 Metals & Mining companies, Petra Diamonds ranks worse than 66.78% on this metric.
As of today (2026-06-24), Petra Diamonds's weighted average cost of capital is 11.33%%. Petra Diamonds's ROIC % is -5.83% (calculated using TTM income statement data).
Petra Diamonds earns returns that do not match up to its cost of capital. It will destroy value as it grows.
For a comprehensive WACC calculation, please access the WACC Calculator.
Petra Diamonds (OTCPK:PDLMF) WACC % Explanation
Because it costs money to raise capital. A firm that generates higher ROIC % than it costs the company to raise the capital needed for that investment is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases, whereas a firm that earns returns that do not match up to its cost of capital will destroy value as it grows.
As of today, Petra Diamonds's weighted average cost of capital is 11.33%%. Petra Diamonds's ROIC % is -5.83% (calculated using TTM income statement data).
Petra Diamonds earns returns that do not match up to its cost of capital. It will destroy value as it grows.
Be Aware
1. GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding latest one-year semi-annual average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together.
For companies that report quarterly, GuruFocus combines all of the most recent year's quarterly debt data from the beginning of the year to the year-end and calculates the average.
For companies that report semi-annually, GuruFocus combines all of the most recent year's semi-annual debt data from the start of the year to the year-end and calculates the average.
For companies that report annually, GuruFocus combines the beginning and ending annual debt data from the most recent year and then calculates the average.
2. The WACC formula discussed above does not include Preferred Stock. Please adjust if preferred stock is considered.
3. (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
4. GuruFocus uses the latest TTM Interest Expense divided by the latest one-year semi-annual average debt to get the simplified cost of debt.
Related Terms
Petra Diamonds WACC % Historical Data
* Premium members only.
The historical data trend for Petra Diamonds's WACC % 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.
For the Other Precious Metals & Mining subindustry, Petra Diamonds's WACC %, along with its competitors' market caps and WACC % 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.
Petra Diamonds WACC % vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Petra Diamonds's WACC % distribution charts can be found below:
* The bar in red indicates where Petra Diamonds's WACC % falls into.
The weighted average cost of capital (WACC) is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm's cost of capital. Generally speaking, a company's assets are financed by debt and equity. WACC is the average of the costs of these sources of financing, each of which is weighted by its respective use in the given situation. By taking a weighted average, we can see how much interest the company has to pay for every dollar it finances.
WACC
=
E
/
(E + D)
*
Cost of Equity
+
D
/
(E + D)
*
Cost of Debt
*
(1 - Tax Rate)
1. Weights:
Generally speaking, a company's assets are financed by debt and equity. We need to calculate the weight of equity and the weight of debt.
The market value of equity (E) is also called "Market Cap". As of today, Petra Diamonds's market capitalization (E) is $34.204 Mil.
The market value of debt is typically difficult to calculate, therefore, GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding the latest one-year semi-annual average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together. As of Dec. 2025, Petra Diamonds's latest one-year semi-annual average Book Value of Debt (D) is $312 Mil.
a) weight of equity = E / (E + D) = 34.204 / (34.204 + 312) = 0.0988
b) weight of debt = D / (E + D) = 312 / (34.204 + 312) = 0.9012
2. Cost of Equity:
GuruFocus uses Capital Asset Pricing Model (CAPM) to calculate the required rate of return. The formula is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)
a) GuruFocus uses 10-Year Treasury Constant Maturity Rate as the risk-free rate. It is updated daily. The current risk-free rate is 4.41%. Please go to Economic Indicators page for more information. Please note that we use the 10-Year Treasury Constant Maturity Rate of the country/region where the company is headquartered. If the data for that country/region is not available, then we will use the 10-Year Treasury Constant Maturity Rate of the United States as default.
b) Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. Petra Diamonds's beta is -0.0973.
c) (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
Cost of Equity = 4.41% + -0.0973 * 6% = 3.8262%
3. Cost of Debt:
GuruFocus uses latest TTM Interest Expense divided by the latest one-year semi-annual average debt to get the simplified cost of debt.
As of Dec. 2025, Petra Diamonds's interest expense (positive number) was $41 Mil. Its total Book Value of Debt (D) is $312 Mil.
Cost of Debt = 41 / 312 = 13.141%.
4. Multiply by one minus TTM Tax Rate:
GuruFocus uses the most recent TTM Tax Expense divided by the most recent TTM Pre-Tax Income to calculate the tax rate. The calculated TTM tax rate is limited to between 0% and 100%. If the calculated tax rate is higher than 100%, it is set to 100%. If the calculated tax rate is less than 0%, it is set to 0%.
The latest calculated TTM Tax Rate = -22 / -293 = 7.51%.
Petra Diamonds's Weighted Average Cost Of Capital (WACC) for Today is calculated as:
WACC
=
E / (E + D)
*
Cost of Equity
+
D / (E + D)
*
Cost of Debt
*
(1 - Tax Rate)
=
0.0988
*
3.8262%
+
0.9012
*
13.141%
*
(1 - 7.51%)
=
11.33%
* 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.
Petra Diamonds (PDLMF) has a WACC % of 11.33% as of Jun. 24, 2026. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on Petra Diamonds and its competitors. This is 52% above median its historical median of 7.44. Over the past decade, Petra Diamonds' WACC % has ranged from 5.23 to 11.95. According to the industry distribution chart, Petra Diamonds ranks #1783 out of 2670 companies in the Metals & Mining industry, placing it in the top 66.8%.
Is Petra Diamonds' WACC % too high?
Petra Diamonds' current WACC % of 11.33% is 52% above median its 10-year median of 7.44. Over the past 10 years, this metric has ranged from a low of 5.23 to a high of 11.95. The Metals & Mining industry median WACC % is 9.59. Petra Diamonds' value of 11.33% is 18.1% above this industry median. Based on the distribution chart, Petra Diamonds ranks #1783 out of 2670 companies in the Metals & Mining industry, which is below the industry midpoint. Overall, Petra Diamonds has a GF Score™ of 43/100, reflecting its overall financial health beyond just this single metric.
How does Petra Diamonds' WACC % compare to HL?
According to the Metals & Mining industry distribution chart, Petra Diamonds ranks #1783 out of 2670 companies for WACC %. This places Petra Diamonds in the lower half of its industry. The industry median WACC % is 9.59. Petra Diamonds' value of 11.33% is 18.1% above this benchmark. Historically, Petra Diamonds' own WACC % has ranged from 5.23 to 11.95 over the past decade. While the company's 10-year median is 7.44 vs. the industry median of 9.59, Petra Diamonds has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good WACC % for a Metals & Mining company?
The median WACC % among Metals & Mining companies is 9.59, based on 2,670 companies in the industry. Companies in the top quartile (top 25%) have a WACC % significantly above this median, while those in the bottom quartile fall well below. However, WACC % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Petra Diamonds's current WACC % of 11.33% is 18.1% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high WACC % mean?
A high WACC % can signal that a stock is expensive relative to its fundamentals. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on Petra Diamonds and its competitors. For the Metals & Mining industry, the median WACC % is 9.59 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Petra Diamonds's current WACC % is 11.33%, which is 52% above median its own 10-year median of 7.44. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Petra Diamonds stock overvalued right now?
Petra Diamonds (PDLMF) has a current WACC % of 11.33%. The stock's GF Value™ is $1.03, compared to a current price of $0.27 — trading 73.9% below its estimated fair value. The current WACC % is 11.33%, which is 52% above median its 10-year median of 7.44 and 18.1% above the Metals & Mining industry median of 9.59. Petra Diamonds' overall GF Score™ is 43/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is WACC % calculated?
WACC % is calculated from a company's financial statements. For Petra Diamonds (PDLMF), the current WACC % is 11.33% as of Jun. 24, 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 Petra Diamonds (PDLMF) Overvalued in 2026?
Based on GuruFocus' analysis, Petra Diamonds stock appears to be undervalued.
The current stock price of $0.27 is trading 73.9% below its estimated GF Value™ of $1.03.
Key valuation signals for PDLMF:
WACC %: 11.33% (52% above median its 10-year median of 7.44)
GF Value™: $1.03 vs. price of $0.27 (73.9% below fair value)
Industry Position: 18.1% above the Metals & Mining median (#1783 of 2670)
No single metric tells the full story. See the PDLMF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Petra Diamonds Ltd is an independent diamond mining company. It focuses on the upstream segment of the diamond pipeline, which includes mining, processing, sorting, and selling rough diamonds. It operates in Southern Africa, with mines such as Cullinan and Finsch producing high-quality white and rare blue diamonds. Its operating and geographical segments are: a) Mining: The extraction and sale of rough diamonds from mining operations in South Africa and Tanzania, b) Corporate: Administrative activities in the United Kingdom, c) Beneficiation: Beneficiation activities in South Africa. The majority of revenue is generated from the sale of rough diamonds.
43GF Score
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