Ian Cassel showed me some data that proves that micro-cap investing is brutally difficult, buy-and-hold almost never works in this space, and even the world’s best fund managers only pick winners about half the time. He also told me that what separates the skilled from the lucky isn’t the quality of their ideas. It’s the discipline of their execution. He talked about sizing positions small at the start, letting winners earn their size, and cutting losers before they cut you.
The Data
Ian shared research from Micro Cap Club’s quant analyst that should be required reading for anyone in the small-cap resource space. Stocks that doubled over 12 months had a median peak-to-trough drawdown of 58% in the following year. Stocks that went up 3x saw a median drawdown of 65%. 5x winners? Roughly 83%. And when they looked at what happens if you buy at that trough (thinking the worst is over) 95% of those stocks never recovered to their previous highs. To put a bow on it, of all micro-caps across the US, Canada, and Europe over the last 10 years, only 24% delivered a return above zero, only 9% matched the S&P 500, and just 2.8% became 10-baggers. The main takeaway is that coffee-canning micro-caps doesn’t work. The shelf life of a micro-cap winner is closer to 4 to 8 quarters, not 25 years, and selling needs to be a central part of the strategy, not an afterthought.
Cutting Losers
Ian walked through the findings of Stock Market Maestros, a book that used trade data from thousands of fund managers to identify who was actually skilled versus merely lucky. The hit rate of even the world’s best stock pickers was pretty much a coin flip, 49%. What created outperformance wasn’t superior idea generation, it was what they did when positions went against them. The number one pain point across all 12 identified skilled managers was cutting losers. The mechanism that helped them do it was pre-set rules. If a position underperformed their benchmark by 15%, it triggered a full thesis reassessment. Not averaging down, not hoping, but a genuine intellectual reboot to check for confirmation bias. Almost none of them averaged down. Instead of throwing good money after bad, they’d rather start a fresh position elsewhere and give themselves another chance to win. Ian told me he applies the same logic personally. He’s cut averaging down by about 90% compared to earlier in his career, and says the healthier approach is to let a losing position shrink rather than compound the mistake.
Management is Everything
I asked Ian about conviction in a cyclical industry where even the two largest gold miners have barely doubled over 40 years, and he said it almost always comes down to management quality. A $10 billion in-situ resource is worth exactly zero with the wrong person running it. The difference between Agnico Eagle compounding for decades while Newmont and Barrick went sideways, he argues, almost certainly comes down to capital allocation discipline. How much debt they took on, whether they chased diversification for the wrong reasons, and whether they treated the company as a business rather than a vehicle for a promotion. His own framework isn’t a rigid checklist. He looks for business-minded operators who aren’t just smart about geology but who think about the company’s survival beyond their own tenure. His IR advice for those companies is to do less, not more. Run earnings calls, be transparent, attend a couple of conferences, do what you say and say what you do. And buy your own stock.
Ian Cassel Interview
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