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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

PORTFOLIO REALIZED GAIN RETURNS

Going into Q4 2025, the real-money JMJ Portfolio is up 171% YTD. Since its inception in Q1/2016 with investment capital of US$500k, the JMJ Portfolio has averaged an annual realized gain return of 20%.

20%

Average annual realized gain return
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WHAT PEOPLE SAY

"I wanted to thank you for your JMJ service, and ask you to let my subscription expire at the end of its current term. I have learned an immense amount from your commentary and method, and benefited greatly. Will continue to be looking for your regular interviews on Kitco, KE Report, and MSE."

—  David J., JMJ Subscriber

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