Understanding Position Sizing Beyond Your Account Balance
Too often, traders think of position sizing simply in terms of how much capital they have, but the real nuance comes in factoring volatility and your chosen stop-loss. For example, if you're looking at a $DAX long and your technical analysis suggests a sensible stop needs to be 150 points away, that 150 points represents your risk per share or per contract. Now, if your total account risk for that trade is, say, 1% of your portfolio, you simply divide that dollar amount by your 150-point risk per share to determine your maximum position size. It's not about how many contracts $DAX could move, but about how many you can afford to lose on based on your predefined risk per trade. This protects you from having a correct directional bias but still getting wiped out because you overleveraged into a volatile instrument.
This is such a crucial point that often gets overlooked, especially by newer traders. Factoring in volatility and a realistic stop-loss before determining position size makes so much more sense than just going by a percentage of your total account. It's like building the house from the foundation up.