Mahler Lizenz is a developer of algorithm trading systems. One of the first systems she developed is the M4X Trading System.

M4X consists of a series of algorithms and a built-in risk & reward management module, which buys and sells positions fully automatically, based on predefined settings.

The underlying principle of the system is that large losses should be avoided and profits should be monitored. Due to this conservative stance, the system has managed to achieve very stable returns in recent years, with a very low standard deviation. This in contrast to alternatives, such as trading the stock market. Thanks to these stable results, an investor can enter and exit at any time, making the system remarkably suitable for wealthy individuals, (financial) institutions, funds and banks.