Position Sizer Overview Calculate the optimal number of shares to buy for a long stock trade based on risk management principles. Supports three sizing methods: - Fixed Fractional : Risk a fixed percentage of account equity per trade (default: 1%) - ATR-Based : Use Average True Range to set volatility-adjusted stop distances - Kelly Criterion : Calculate mathematically optimal risk allocation from historical win/loss statistics All methods apply portfolio constraints (max position %, max sector %) and output a final recommended share count with full risk breakdown. When to Use - User asks "ho…