Understanding Position Sizing Beyond Your Account Balance

It's not just about how much capital you've got in your account. Proper position sizing means calculating how much you're willing to lose per trade, then backing into the number of units you can buy or sell. Say you're looking at $ZS, currently trading around 181.745. If your analysis suggests a stop at 178.00 and you've decided you're comfortable losing, let's say, $200 on this particular trade, you'd calculate your permissible risk per unit (181.745 - 178.00 = $3.745). Your position size would then be $200 / $3.745, which is roughly 53 units. That's your maximum exposure, not some arbitrary percentage of your entire portfolio.

This simple approach keeps you from blowing up your account on one bad call, letting you manage risk systematically across different setups, whether you're trading commodities like $SI or currencies like $EURCHF. Without a solid handle on this, you're just gambling.