Most new traders decide position size backwards — they pick a share count or lot size that "feels right," then discover their stop-loss (if they even had a real reason to keep it) implies risking far more of their account than intended.
The Correct Order of Operations
Start with how much of your account you're willing to risk on a single trade — commonly 1-2% for retail traders. Then determine your stop-loss distance based on the chart, not on your risk tolerance. Position size is the output of dividing your risk amount by your stop distance, not an input you choose freely.
Why This Protects You Long-Term
With consistent 1% risk per trade, a losing streak of ten trades in a row costs roughly 10% of your account — painful, but recoverable. The same losing streak at 5% risk per trade can wipe out nearly half your capital, a hole that's mathematically much harder to climb out of.
This calculation is drilled into every strategy we teach across our Financial Academy programs, because a good setup with bad sizing still loses money over time.
