Understanding Position Sizing: It's More Than Just How Many Shares
Many new traders think position sizing is just about how many shares you buy. It's not. It's about managing your risk per trade by calculating how much capital you're willing to lose if your stop loss is hit, and then using that to determine your share count based on your entry and stop prices. For instance, if you're risking $100 per trade and your stop on $MRVL is at $230 from an entry of $237.04, you'd be able to buy roughly 14 shares ($100 / ($237.04 - $230) = 14.28 shares), not just a random amount.
Exactly. Most people jump straight to 'how many shares' without ever figuring out their risk capital first. That's a surefire way to blow up an account.