Position Sizing Calculator

Optimize your trade size based on risk tolerance and portfolio volatility.

Risk Per Share

₹5

Potential loss from entry to stop loss

Potential Profit Per Share

₹20

Potential gain from entry to target

Risk/Reward Ratio

1:4.00

Better if > 1:2

Fixed Risk Method

Shares to Buy
200
Position Value
₹20,000
% of Portfolio
20.00%
Max Profit
₹4,000

Why Position Sizing Matters

Position sizing is the most important risk management tool. Even with a 60% win rate, poor position sizing can wipe out your portfolio. Professional traders focus more on position sizing than on picking winners.

Fixed Risk Method

Simplest method: Risk a fixed amount (₹1,000) per trade. Position size = Risk Amount / (Entry - Stop Loss). Best for beginners, ensures consistent risk across all trades.

Kelly Criterion

Mathematically optimal method: f = (bp - q) / b. Maximizes long-term growth but can cause large drawdowns. Use 'half-Kelly' (f/2) for safer implementation. Pro traders prefer this.

Volatility-Based

Dynamic method that adjusts for market conditions. Higher volatility = smaller positions. Useful in variable market environments. Requires volatility estimate of your portfolio.

Risk/Reward Ratio

Essential for position sizing. A 1:2 ratio means you profit ₹2 for every ₹1 risked. Aim for at least 1:2, ideally 1:3. Better ratios justify larger positions.

Implementation Tips

1) Calculate position size before entering the trade. 2) Never risk more than 1-2% of portfolio per trade. 3) Use stop losses religiously. 4) Scale out of winners using fixed ratios.

⚠️ Disclaimer

The figures provided by this calculator are estimates based on the inputs you provide and standard financial formulas. STOCKCALC.IN does not offer investment advice. Please consult a qualified financial advisor before making any investment decisions.

MH

Verified Contributor

Position Sizing Calculator analyzed by Mahavir Hirani

I verified this calculation against the April 2026 Fiscal Cycle. If you have questions about the logic, reach out via the Author Page.

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