Understanding Position Sizing Beyond 'Just Enough'

Hey everyone, wanted to quickly touch on position sizing because it's something I see a lot of newer traders gloss over, and it's absolutely crucial for managing risk, arguably more so than your entry point. It's not just about how much capital you can put into a trade, but how much you should based on your risk tolerance and where your stop loss is. Let's say you're looking at something like $SI, which saw a pretty wild move today up to 20.73. If your strategy suggests a stop at 19.50, and you're aiming for a 1R loss per trade, you can calculate your ideal position size. If you risk $100 per trade, that's $100 divided by your per-share risk ($20.73 - $19.50 = $1.23), giving you about 81 shares. This way, even if that stop gets hit, you're only losing your predefined amount, rather than getting blown out because you went too heavy on a volatile asset. It keeps you in the game for the long haul, even through inevitable drawdowns.