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The Kelly Criterion: Optimal Position Sizing for Traders

f* = (bp - q) / b

Where:

  • b = odds (win/loss ratio)
  • p = probability of winning
  • q = probability of losing (1-p)

Most traders use half-Kelly for safety. Never risk more than 2% per trade.


Free Kelly calculator: https://blog.quant-view.xyz/tools/

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