Before revision:  This is usually achieved through the so-called Kelly criterion, which in a dynamic setting where investment decisions are adjusted over time, prescribes a constant optimal fraction of capital that should be re-invested at each time, i.e. the investor's optimal leverage .
After revision:  This is usually achieved through the so-called Kelly criterion, according to which the optimal growth rate is achieved by investing a constant given fraction of resources at any step of the dynamics .