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About JuniorMinerJunky
JMJ is a subscription service focused on precious metals mining sector. Founded by David Erfle, a self-taught professional mining sector investor, the service provides full transparency into David's trading activities and teaches investors how to successfully navigate this high-risk/high-reward sector.

Low Risk Investments

Growth
Oriented Producers

Medium Risk Investments

Developers
and
Explorers

High Risk Investments

Early stage exploration
companies

REAL MONEY PORTFOLIO RETURNS

The real-money JMJ Portfolio was up 265% in 2025. Since its inception in Q1/2016 with investment capital of US$500k, the JMJ Portfolio has averaged an annual realized gain return of 20%.

265%

Total portfolio gain in 2025
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WHAT PEOPLE SAY

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"Dear David,

 

I just want to say thank you for all you do. As I have learned to navigate the wealth of information now available to investors, it has become somewhat of a challenge knowing who to trust and where to focus my time. You are one of the individuals who I have come to trust. I look forward to your weekly newsletter as well as any of  the interviews you are part of. Keep up the good work!"

—  S.P., JMJ Subscriber

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