What is Position Sizing?
Position Sizing: Position sizing is the process of determining how many shares, contracts, or lots to trade on each position based on your account size and risk tolerance.
Full Definition
Position sizing determines how much capital to allocate to each trade. Proper position sizing ensures that no single trade can cause catastrophic damage to your account. The most common approach is the percentage risk model: risk only 1–2% of your trading capital on any single trade. If your capital is ₹5,00,000 and you risk 1% per trade, your maximum risk per trade is ₹5,000.
Impact on Your Trading
Position sizing is arguably the most important risk management skill. Traders who size positions correctly can withstand long losing streaks without blowing their accounts. Poor position sizing is one of the top three reasons traders lose money.
For Indian Traders
In F&O trading, position sizing in India requires understanding lot sizes. One Nifty futures lot = 25 units. One Bank Nifty lot = 15 units. The actual capital at risk depends on premium paid (for options) or margin required (for futures). Always calculate risk in rupees, not lots.
How to track this in your journal
Log your position size as a percentage of capital on every trade. Review your average position size on winning vs losing trades — many traders unconsciously size up on lower-quality setups.
Frequently Asked Questions
How much should I risk per trade?▼
Most professional traders risk 0.5%–2% of their total trading capital per trade. For beginners, 0.5%–1% is recommended. On a ₹2,00,000 trading account, 1% risk = ₹2,000 maximum loss per trade. Never risk more than you can afford to lose on any single trade.
Track Position Sizing in your journal
Use Trade Prom to monitor how position sizing affects your trading results.
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