مركز sizing is how آپ translate a صفقة idea into an exact number of لوت so that a loss costs a fixed, planned amount. It is the single most practical skill in مخاطرة management.
The percent-مخاطرة model
مخاطرة a small, fixed percentage of your حساب per صفقة — commonly 0.5% to 1%. On a $5,000 حساب, 1% is $50. Every صفقة is sized so that hitting your stop-loss loses about that amount, no more.
The sizing formula
مركز size = (حساب × مخاطرة %) ÷ (stop distance in pips × pip value). If your stop is 25 pips away and a micro لوت's pip value is $0.10, then $50 of مخاطرة ÷ (25 × 0.10) = 20 micro لوت. Wider stops mean smaller size; tighter stops allow larger size — same money at مخاطرة either way.
Why fixed-percent survives
Risking a fixed percentage means your مركز shrinks automatically during a losing streak (each loss makes the حساب, and so the اگلا مركز, smaller) and grows as آپ recover. It mathematically prevents the death spiral of risking more to win مرة أخرى losses.
Key takeaways
- مخاطرة a fixed small % (0.5–1%) of the حساب per صفقة.
- Size = (حساب × مخاطرة%) ÷ (stop pips × pip value).
- Fixed-percent sizing shrinks مخاطرة in drawdowns and prevents the death spiral.