Position size
2
MES contracts · tick 0.25 = $1.25
actual risk $100 of your $100 budget
How do I size a futures position?+
Decide the cash you'll risk (e.g. 1% of the account), divide by your stop distance in ticks times the tick value, and round DOWN to whole contracts. Two MES contracts with a 40-tick stop risks 2 × 40 × $1.25 = $100.
How do I size a forex position?+
Risk amount divided by (stop in pips × pip value per lot). With $100 risk, a 20-pip stop and $10/pip per standard lot, you trade 0.50 lots.
What percent should I risk per trade?+
Most disciplined traders keep it at 0.5–2% per trade. Above 2%, a normal 10-loss streak takes a fifth or more of the account — the maths stops being recoverable psychology-wise.
Sizing is the easy half.
Merlin journals every trade, flags the ones where you broke your own sizing rules, and shows what that costs you per month.
One click — no email, no card.