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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

"Thank you for the great insight. I started investing almost exclusively in gold, silver, and mining stocks about 3 years ago. I didn’t know much, other than my gut telling me this was where I needed to be and that I should move out of traditional stocks and funds. I felt the same way back in 2006, but my advisor at the time talked me out of it. I no longer work with him. I did just okay in 2023 and 2024, but 2025 has been exceptional (up well over 100%). I knew I don’t have enough experience to know when to exit positions, so I’ve been looking for guidance for quite a while. Reading your work has definitely changed how I approach investing, and I truly believe it has been some of the best money I’ve spent. I have read several others, but you are one of the two subscriptions that I plan on continuing.  A lot of your content is still hard for me to fully digest, but I'm getting more out of it all the time."

—  R. J., JMJ Subscriber

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