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Position Sizing & Risk of Ruin
How professionals decide how much to bet, and why retail usually doesn't.
The single largest determinant of long-term returns is not which stocks you pick, it's how much you size each position relative to your conviction and risk tolerance.
A 60% hit rate with 1:3 risk/reward beats an 80% hit rate with 1:1. Position sizing turns that math into compounding.
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