Position Sizing Strategies

Learn how to determine the optimal size for your trading positions.

Why Position Sizing Matters

Position sizing is arguably the most important aspect of risk management:

• Protects against catastrophic losses
• Ensures consistent risk across trades
• Maximizes long-term growth
• Reduces emotional decision making

Methods

Fixed Percentage Risk

Risk a fixed percentage of your account on each trade.

Formula:

Position Size = (Account × Risk%) / Risk per Share
Risk per Share = Entry Price - Stop Loss

Pros: Simple, scales with account size Cons: Doesn't account for trade quality

Kelly Criterion

Optimal position sizing based on win rate and reward/risk.

Formula:

Kelly % = W - [(1-W) / R]
W = Win rate
R = Win/Loss ratio

Example:

• Win rate: 60%
• Average win: $100
• Average loss: $50
• R = 100/50 = 2
• Kelly = 0.60 - (0.40/2) = 40%

Note: Most traders use half or quarter Kelly to reduce volatility.

Fixed Ratio

Increase position size after accumulating a fixed amount of profit.

Volatility-Based

Adjust position size based on market volatility (ATR).

Position Size = Risk Amount / (ATR × Multiplier)

Scaling Strategies

Scaling In

Build a position gradually:

• Enter 50% initially
• Add 25% on confirmation
• Add final 25% on strength

Scaling Out

Take profits gradually:

• Exit 33% at first target
• Exit 33% at second target
• Let remainder run with trailing stop

Position Sizing in Neura AI

The platform offers:

• Automatic position sizing calculator
• Risk-adjusted recommendations
• Portfolio-aware suggestions
• One-click optimal sizing