Petra DiamondsPDLMF 43 Cyclically Adjusted PB Ratio is 0.01 as of Jul. 05, 2026, which is 67% below its 10-year median of 0.03. GuruFocus rates PDLMF with a GF Score™ of 43/100 and a GF Value™ of $0.96. The stock has 2 warning signs investors should review. Among 1,547 Metals & Mining companies, Petra Diamonds ranks better than 99.94% on this metric.
The historical rank and industry rank for Petra Diamonds's Cyclically Adjusted PB Ratio or its related term are showing as below:
PDLMF'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.01 Med: 0.03 Max: 2.67
Current: 0.01
During the past 13 years, Petra Diamonds's highest Cyclically Adjusted PB Ratio was 2.67. The lowest was 0.01. And the median was 0.03.
PDLMF's Cyclically Adjusted PB Ratio is ranked better than 99.94% of 1547
companies
in the Metals & Mining industry
Industry Median: 1.54
vs PDLMF: 0.01
The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.
Petra Diamonds's adjusted book value per share data of for the fiscal year that ended in Jun25 was $0.535. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is $28.99 for the trailing ten years ended in Jun25.
Shiller PE for Stocks: The True Measure of Stock Valuation
Petra Diamonds (OTCPK:PDLMF) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
Petra Diamonds Cyclically Adjusted PB Ratio Related Terms
Petra Diamonds Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for Petra Diamonds's Cyclically Adjusted PB Ratio 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.
PDLMF vs HL: Cyclically Adjusted PB Ratio Comparison
For the Other Precious Metals & Mining subindustry, Petra Diamonds's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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.
Petra Diamonds Cyclically Adjusted PB Ratio vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Petra Diamonds's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Petra Diamonds's Cyclically Adjusted PB Ratio falls into.
Petra Diamonds Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
Petra Diamonds's Cyclically Adjusted PB Ratio for today is calculated as
* 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.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
What does a Cyclically Adjusted PB Ratio of 0.01 mean?
Petra Diamonds (PDLMF) has a Cyclically Adjusted PB Ratio of 0.01 as of Jul. 05, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Petra Diamonds and its competitors. This is 67% below median its historical median of 0.03. Over the past decade, Petra Diamonds' Cyclically Adjusted PB Ratio has ranged from 0.01 to 2.67. According to the industry distribution chart, Petra Diamonds ranks #1 out of 1547 companies in the Metals & Mining industry, placing it in the top 0.099999999999994%.
Is Petra Diamonds' Cyclically Adjusted PB Ratio too high?
Petra Diamonds' current Cyclically Adjusted PB Ratio of 0.01 is 67% below median its 10-year median of 0.03. Over the past 10 years, this metric has ranged from a low of 0.01 to a high of 2.67. The Metals & Mining industry median Cyclically Adjusted PB Ratio is 1.54. Petra Diamonds' value of 0.01 is 99.4% below this industry median. Based on the distribution chart, Petra Diamonds ranks #1 out of 1547 companies in the Metals & Mining industry, which is in the top quartile — a strong position relative to peers. Overall, Petra Diamonds has a GF Score™ of 43/100, reflecting its overall financial health beyond just this single metric.
How does Petra Diamonds' Cyclically Adjusted PB Ratio compare to HL?
According to the Metals & Mining industry distribution chart, Petra Diamonds ranks #1 out of 1547 companies for Cyclically Adjusted PB Ratio. This places Petra Diamonds in the top 0% of its industry — outperforming the majority of peers. The industry median Cyclically Adjusted PB Ratio is 1.54. Petra Diamonds' value of 0.01 is 99.4% below this benchmark. Historically, Petra Diamonds' own Cyclically Adjusted PB Ratio has ranged from 0.01 to 2.67 over the past decade. While the company's 10-year median is 0.03 vs. the industry median of 1.54, Petra Diamonds has consistently been below 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 Cyclically Adjusted PB Ratio for a Metals & Mining company?
The median Cyclically Adjusted PB Ratio among Metals & Mining companies is 1.54, based on 1,547 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Petra Diamonds's current Cyclically Adjusted PB Ratio of 0.01 is 99.4% below 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 Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Petra Diamonds and its competitors. For the Metals & Mining industry, the median Cyclically Adjusted PB Ratio is 1.54 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Petra Diamonds's current Cyclically Adjusted PB Ratio is 0.01, which is 67% below median its own 10-year median of 0.03. 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 Cyclically Adjusted PB Ratio of 0.01. The stock's GF Value™ is $0.96, compared to a current price of $0.27 — trading 72% below its estimated fair value. The current Cyclically Adjusted PB Ratio is 0.01, which is 67% below median its 10-year median of 0.03 and 99.4% below the Metals & Mining industry median of 1.54. 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 Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Petra Diamonds (PDLMF), the current Cyclically Adjusted PB Ratio is 0.01 as of Jul. 05, 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 72% below its estimated GF Value™ of $0.96.
Key valuation signals for PDLMF:
Cyclically Adjusted PB Ratio: 0.01 (67% below median its 10-year median of 0.03)
GF Value™: $0.96 vs. price of $0.27 (72% below fair value)
Industry Position: 99.4% below the Metals & Mining median (#1 of 1547)
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
Get the complete analysis for PDLMF
Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
PDLMF has been successfully added to your 
