  In this paper the fractional trading ansatz of money management is
reconsidered with special attention to chance and risk parts in the goal
function of the related optimization problem. By changing the goal function
with due regards to other risk measures like current drawdowns, the optimal
fraction solutions reflect the needs of risk averse investors better than the
original optimal f solution of Ralph Vince.
  Keywords: fractional trading, optimal f, current drawdown, terminal wealth
relative, risk aversion
