Kelly Criterion Position Sizing Workflow for Trading
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Kelly Criterion Position Sizing Workflow for Trading A step-by-step workflow using Claude Code to backtest a trading strategy, calculate half-Kelly position sizing, and compare equity curves with fixed sizing.
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Step 1: Get set up
Download Claude desktop then open Claude Code.
Free account: My Account, copy the line of code, paste it in, "install this globally".
Step 2: Get your real numbers
Prompt:
"Backtest this strategy on BTCUSDT 1 hour, fees on, full history. Show me the win rate and the average win against the average loss"
Step 3: Let Claude do the maths
Prompt:
"Using those numbers, calculate the Kelly position size for this strategy, then halve it, and tell me what percentage of my account that means per trade"
Step 4: See the difference
Prompt:
"Backtest this with fixed sizing, then again with half Kelly. Show me both equity curves and both drawdowns"
Step 5: Keep your own limits on top
Mine caps at 1 to 3% collateral per position and 5x leverage whatever the maths says
Step 6: Redo it every few months
Win rates drift, so the sizing should move with them.
Forward test any change for 20 trades before real money.
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References
- Category: business Prompts
- Source: https://x.com/DaviddDotTech/status/2105204520368169030
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