Petra Diamonds (CHIX:PDLL) 1-Year Sharpe Ratio: -0.39 (As of Jul. 09, 2026)


What is Petra Diamonds 1-Year Sharpe Ratio?

Petra Diamonds CHIX:PDLL -5.14% 1-Year Sharpe Ratio is -0.39 as of Jul. 09, 2026. The stock has 2 warning signs investors should review.

The 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past year. As of today (2026-07-09), Petra Diamonds's 1-Year Sharpe Ratio is -0.39.

Petra Diamonds  (CHIX:PDLl) 1-Year Sharpe Ratio Explanation

The 1-Year Sharpe Ratio inidicates the risk-adjusted return of an investment over the past year. It is calculated as the annualized result of the average monthly excess return divided by its standard deviation over the past year. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.

The greater a portfolio's Sharpe Ratio, the better its risk-adjusted performance. A negative Sharpe Ratio means the risk-free rate is greater than the portfolio’s historical or projected return, or else the portfolio's return is expected to be negative.

Petra Diamonds 1-Year Sharpe Ratio Related Terms

CHIX:PDLL vs HL: 1-Year Sharpe Ratio Comparison

For the Other Precious Metals & Mining subindustry, Petra Diamonds's 1-Year Sharpe Ratio, along with its competitors' market caps and 1-Year Sharpe 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 1-Year Sharpe Ratio vs Metals & Mining Industry

For the Metals & Mining industry and Basic Materials sector, Petra Diamonds's 1-Year Sharpe Ratio distribution charts can be found below:

* The bar in red indicates where Petra Diamonds's 1-Year Sharpe Ratio falls into.


Petra Diamonds 1-Year Sharpe Ratio Calculation

The 1-Year Sharpe Ratio measures the performance of an investment such as a stock or portfolio compared to a risk-free asset. A stock / portfolio's 1-Year Sharpe Ratio can be calculated by dividing the difference between the one-year returns of the investment and the risk-free rate, by the standard deviation of the investment returns over one year.

Frequently Asked Questions Learn more about 1-Year Sharpe Ratio →
What does a 1-Year Sharpe Ratio of -0.39 mean?
Petra Diamonds (CHIX:PDLL) has a 1-Year Sharpe Ratio of -0.39 as of Jul. 09, 2026. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for Petra Diamonds and its competitors.
Is Petra Diamonds' 1-Year Sharpe Ratio too high?
Petra Diamonds' current 1-Year Sharpe Ratio is -0.39.
How does Petra Diamonds' 1-Year Sharpe Ratio compare to HL?
Petra Diamonds' 1-Year Sharpe Ratio of -0.39 can be compared against companies in the Metals & Mining industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 1-Year Sharpe Ratio for a Metals & Mining company?
A good 1-Year Sharpe Ratio depends on the Metals & Mining industry context. However, 1-Year Sharpe 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 1-Year Sharpe Ratio mean?
A high 1-Year Sharpe Ratio can signal that a stock is expensive relative to its fundamentals. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for Petra Diamonds and its competitors. Petra Diamonds's current 1-Year Sharpe Ratio is -0.39. 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?
Based on GuruFocus' analysis, Petra Diamonds (CHIX:PDLL) is currently considered Possible Value Trap. The stock's GF Value™ is £0.26, compared to a current price of £0.07 — trading 74.5% below its estimated fair value. The current 1-Year Sharpe Ratio is -0.39. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 1-Year Sharpe Ratio calculated?
1-Year Sharpe Ratio is calculated from a company's financial statements. For Petra Diamonds (CHIX:PDLL), the current 1-Year Sharpe Ratio is -0.39 as of Jul. 09, 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.

Petra Diamonds Business Description

Other Exchanges PDL:UKFPO:Germany
Address 2 Church Street, Clarendon House, Hamilton, BMU, HM11
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.