Risk per trade: the most important number nobody writes down

Every trading system, good or bad, is built on two numbers: how often right, how often wrong. The third number — risk per trade — decides what each “wrong” costs.

The simple logic

Risk everything on each trade and one mistake is enough to reach zero. Risk a small slice and even a chain of mistakes keeps you alive. That is account survival, not profitability.

How to pick your number

1. Start from your headache threshold: the loss that would not keep you awake.
2. Write the number as a fixed rule — on paper, not in your head.
3. Tie every trade to that rule with the position-size calculator.

And remember: risk per trade is completed by the stop-hedge (SEPAR), not replaced by it. Read the risk guide.

Frequently asked questions

Must my number be fixed? A fixed rule is better; changing it mid-losing-streak means bending the rule to the outcome — exactly what the rule prevented.

Several simultaneous trades each risking X? Watch the aggregate; five same-direction trades are one bigger bet, not five independent ones.

Does a tighter stop mean less risk? It means size can grow for the same risk; your number sets the risk, not the stop distance. Set them together.

Should I reduce risk per trade in volatile markets? If volatility has widened your stop distance, the same percentage risk calls for a smaller size — which is exactly what the calculator says. The percentage rule does not need changing; the rule adapts through the distance. That is precisely the beauty of a percentage rule.

Summary

Write the number, apply it with the tool, guard it with SEPAR. The position-size calculator and SEPAR.

The three risk-per-trade rules

• A written number: I never risk more than X
• Tie every size to the rule with the tool
• Watch the aggregate risk of simultaneous trades
• Do not change the rule mid-losing-streak
• Survival is the precondition of profit

The size calculator and risk guide: See it.