Kelly Criterion Calculator
PROCalculate the mathematically optimal position size to maximise long-run growth without risking ruin.
CFA, CMT — Chartered Financial Analyst & Chartered Market Technician
Former institutional trader with 15 years experience across equities, forex and derivatives. Now focused on financial education.
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About the Kelly Criterion Calculator
The Kelly Criterion maximises long-run growth. In practice, use Quarter Kelly (25%) to reduce variance and emotional pressure.
Formula: Kelly % = W − (1−W)/b where W = win rate, b = avg_win/avg_loss