How do you size your first trades of a new strategy?

A new strategy's first live trades should be its smallest: the sample is unproven, the execution habits unformed. Scaling in gradually as the results accumulate is the professional pattern.

How do you size your first trades of a new strategy? — risk-reward diagram
A risk-reward ratio of 1 to 2

What's your ramp?

  • the starting size for an unproven strategy
  • the evidence required before increasing
  • how long you keep a strategy on probation
How do you size your first trades of a new strategy? — moving average crossover diagram
A fast moving average crossing a slower one

The position sizing guide structures the ramp.

Background: Position sizing: how to risk a fixed percentage per trade

How much you trade matters more than where you enter. A step-by-step method for sizing positions from your stop-loss and the amount you are willing to lose.

How do I calculate lot size from risk?

Divide the amount you are willing to lose by the stop distance in pips multiplied by the pip value per lot. For $50 risk, a 25-pip stop and $10 per pip per lot, that is 0.20 lots.

What is the 1% rule in trading?

A guideline to risk no more than 1% of the account on any single trade, so a losing streak doesn't cause a drawdown you can't recover from. It is a starting point, not a guarantee.

Read the full guide

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