PRMMF (Premier African Minerals) 5-Year Sortino Ratio: N/A (As of Aug. 07, 2026)

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What is Premier African Minerals 5-Year Sortino Ratio?

The 5-Year Sortino Ratio measures the additional return that an investor receives per unit of the downside risk over the past five years. As of today (2026-08-07), Premier African Minerals's 5-Year Sortino Ratio is Not available.


Premier African Minerals  (OTCPK:PRMMF) 5-Year Sortino Ratio Explanation

The 5-Year Sortino Ratio inidicates the risk-adjusted return of an investment over the past five year. It is calculated as the annualized result of the average five-year monthly excess returns divided by the standard deviation of negative returns in the five-year period. 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.

Differnt from the Sharpe Ratio that penalizes both upside and downside volatility equally, the Sortino Ratio penalizes only those returns falling below a user-specified target or required rate of return. The expected returns here is set to the risk-free rate as well.


Premier African Minerals 5-Year Sortino Ratio Related Terms


Premier African Minerals 5-Year Sortino Ratio Competitor Comparison

For the Other Industrial Metals & Mining subindustry, Premier African Minerals's 5-Year Sortino Ratio, along with its competitors' market caps and 5-Year Sortino 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.


Premier African Minerals 5-Year Sortino Ratio vs Metals & Mining Industry

For the Metals & Mining industry and Basic Materials sector, Premier African Minerals's 5-Year Sortino Ratio distribution charts can be found below:

* The bar in red indicates where Premier African Minerals's 5-Year Sortino Ratio falls into.



Premier African Minerals 5-Year Sortino Ratio Calculation

The 5-Year Sortino Ratio measures the risk-adjusted return of an investment asset or portfolio in the last five year, focusing specifically on downside risk rather than total risk. A stock / portfolio's 5-Year Sortino Ratio can be calculated by dividing the difference between the five-year average monthly returns of the investment and the risk-free rate, by the standard deviation of the downside risks over the past five year.

A downside risk is a potential loss from the asset or investment. The Downside risk here is measured by the downside deviation, which is the standard deviation of negative returns.


Premier African Minerals Business Description

Other Exchanges PREM:UK0PA0:Germany
Address Craigmuir Chambers, P.O. Box 71, Tortola, Road Town, VGB, VG 1110
Premier African Minerals Ltd is a mining company that explores, evaluates, and develops mineral properties focused mainly on tungsten, lithium and tantalum elements in Africa. The company operates in three segments: RHA and RHA Mauritius, which is engaged in the development and mining of Wolframite; Zulu and Zulu Mauritius, which is engaged in the development of Lithium and Tantalite; and the Head office.