RISK MANAGEMENT TOOL
This free Position Size Calculator helps you control risk by auto-adjusting share size based on volatility—directly in NinjaTrader’s Market Analyzer.
Position sizing is the backbone of risk management, yet many traders overlook it or get it wrong. With the Position Size Calculator, you’ll always know exactly how many shares to trade—based on your risk tolerance and real-time market volatility.
Designed specifically for stocks on NinjaTrader 8, this free indicator updates your recommended share size live in the Market Analyzer, using:
✅ Your pre-defined $ risk per trade
✅ Real-time ATR-based stop distance
✅ Dynamic size adjustments based on market range
So when the market is wild, your size gets smaller. When it's calm, you can size up safely.
Used by over 300+ active traders, it's one of the most downloaded free tools on our site—for good reason.
Playbook Resources - Download free Indicators, Access Tutorials, Chart Set Ups, Trading Notes and many more Trader Resources !
📈 ATR-Based Volatility Sizing
The indicator calculates current Average True Range (ATR), ensuring your position size adapts to market conditions.
💰 Risk-Per-Trade Control
Set your $ risk amount once, and the calculator handles the math—no spreadsheets, no second-guessing.
🔄 Live Updates in Market Analyzer
No need to recalculate every time price moves. The Market Analyzer column updates in real time as ATR and price change.
🧠 Built-In Risk Discipline
By aligning size with volatility, you avoid oversized trades during high-risk periods—and stay consistent when conditions are favorable.
✅ How It Works
Add the indicator to your NinjaTrader Market Analyzer
Enter your fixed risk amount (e.g., $100)
It reads the current ATR
Calculates optimal share quantity for each symbol
Updates live as volatility changes
✅ Smart Sizing Means Smarter Trading
This tool helps you:
🔹 Prevent oversized trades in volatile conditions
🔹 Stick to consistent risk per trade
🔹 Eliminate emotion from position sizing
🔹 Focus on strategy—not calculator errors
✅ Designed for Stock Traders on NinjaTrader 8
This indicator was built exclusively for stock trading. Whether you're day trading or swing trading equities, this tool makes sure you’re never overexposed.
How to Import Indicator Files into NinjaTrader 8:
Click "Get Free Access" and Download the indicator file from Playbook Resources section "Free NinjaTrader Indicators"
Open NinjaTrader 8.
Go to the top menu and click:
Tools → Import → NinjaScript Add-On
Select the downloaded file and complete the import process.