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Risk-Based Lot Sizing from Account Balance and Stop Distance

Article MQL5 code base

Summary

The document describes an MQL5 calculator for translating a chosen account risk percentage and stop-loss distance into a lot size for the current trading symbol. Its purpose is to make position sizing consistent with the account balance and planned exit distance, instead of relying on manual estimation.

The description gives no sizing formula, worked example, performance evidence, or discussion of assumptions such as pip value, contract specifications, or costs. It is therefore an overview of a utility rather than a full treatment of risk-based sizing. Its practical usefulness depends on the script correctly accounting for symbol and account details, which are not explained in the text.

Key ideas

  • The calculator uses a risk percentage and stop-loss distance to estimate lot size.
  • It reports a size for the current symbol and account balance.
  • The document provides no formula or example to assess how the calculation handles instrument specifications.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.