Most traders worry too much about charts and news. They ignore the one thing that actually helps them survive: position sizing.
It answers a simple question: “How many shares should I buy so I stay safe, even if I am wrong?” Don’t buy based on a feeling. Buy based on calculated risk. That is how professionals trade.
Why Position Sizing Matters
Markets reward discipline, not aggression. Proper sizing ensures:
No single trade can damage your portfolio
Drawdowns remain shallow
Emotional decision-making reduces dramatically
You can continue trading even after a losing streak
It’s the foundation on which every successful system, be it technical or fundamental, is built.
The Simple Formula
Position Size = Risk Per Trade ÷ Stop-Loss Distance
Where:
Risk Per Trade is (Capital × Risk% per trade)
Risk% per trade is usually 0.5–1%
Stop-loss distance is the gap between the entry price and the stop loss
Example
Portfolio: ₹10,00,000
Risk Percentage: 1%
Risk per Trade: ₹10,000 max loss
Buy at ₹500, stop-loss at ₹470 → distance ₹30
Position Size = 10,000 ÷ 30 = 333 shares
Even if the trade fails, the loss stays capped at ₹10,000, a hallmark of disciplined trading.