> For the complete documentation index, see [llms.txt](https://docs.metacopier.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.metacopier.io/features/basic-features/martingale-strategy.md).

# Martingale strategy

The **Martingale strategy** feature controls how the lot size is rounded when the master and the slave account have very different balances.

If there is a significant difference in balance or equity between the two accounts, the calculated lot size on the slave account may be rounded down. For example, if trades of `0.02` and `0.04` lots are placed on a master account with 4000 USD, a standard copier would open `0.01` and `0.01` lots on a slave account with 1000 USD, which no longer reflects the progression of the master. With this feature enabled, the copier opens `0.01` and `0.02` lots instead, so the martingale progression of the master is preserved.

The same option also exists directly on the copier as **Adjust lot size based on martingale multiplier** (see [Copiers](/features/basic-features/copiers.md)). Adding it as a feature lets you enable or disable it **per symbol**.

## Settings

* **Enable martingale strategy:** Turns the rounding adjustment on for this copier. Disabled by default.
* **Add symbol configuration:** Enable or disable the adjustment for a specific symbol. A symbol entry overrides the global setting of this feature.

{% hint style="info" %}
This feature only changes how the lot size is **rounded**. It does not increase your lot size after a loss and it does not create additional trades. If you are looking for an automatic lot increase after losing trades, see [Progressive trade sizing](/features/pro-features/progressive-trade-sizing.md).
{% endhint %}

{% hint style="info" %}
For martingale strategies it is also recommended to keep **Open retry** enabled on the copier, so a failed entry of the progression is retried instead of being lost.
{% endhint %}