Summary
Calculates how many shares to buy based on your account size, entry price, and stop loss using three methods: fixed fractional (risk 1% per trade), ATR-based volatility sizing, or Kelly Criterion from your win/loss stats. Takes optional constraints like max position size or sector concentration and tells you which limit is binding. Outputs both JSON and markdown reports with exact shares, dollar risk, and position value. The methodology reference is solid on why you should basically never risk more than 2% per trade and always use half Kelly if you're going that route. No API keys needed, just Python standard library. Good for anyone who wants to stop guessing at position sizes and actually manage risk consistently.
Install to Claude Code
npx -y skills add tradermonty/claude-trading-skills --skill position-sizer --agent claude-codeInstalls into .claude/skills of the current project.
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SKILL.md
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
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