Piraya Tools
Fixed Ratio Position Sizing
Plan your position size increases using Ryan Jones’ fixed ratio money management method.
Account Growth per Level
Level-by-Level Breakdown
| Closed Profits | Trade Size | Account Level |
|---|
How It Works
Fixed ratio position sizing increases your position by one contract after earning delta for each contract you currently trade. Going from N to N+1 contracts requires N × delta in additional closed profit, naturally slowing down size increases as your position grows for better risk management.
The delta is typically based on a percentage of the maximum expected drawdown. A delta of 50% of max drawdown is considered average. A smaller delta is more aggressive (faster position increases), while a larger delta is more conservative (slower position increases).
This approach was developed by Ryan Jones. It allows traders to increase position size aggressively early on (when the account is small and risk is limited) while becoming progressively more conservative as the number of contracts grows.