Understanding Position Sizing: Not Just How Much, But How to Handle Risk

Position sizing is often misunderstood as simply how many shares or contracts you buy. It's fundamentally about managing risk per trade. A good rule of thumb is to risk no more than 1-2% of your total trading capital on any single trade. This isn't about setting your stop loss at 2% below your entry; it's about calculating how many units you can buy such that if your stop loss is hit, your loss does not exceed that 1-2% threshold. For example, if you have a $100,000 account, risking 1% means you're willing to lose $1,000 on a trade. If you're looking at $ADBE currently around 270.49 and your technical analysis suggests a stop at 265, your per-share risk is $5.49. To risk $1,000, you'd buy approximately 182 shares ($1000 / $5.49). This simple calculation ensures no single bad trade blows up your account, irrespective of how confident you feel.