New article Portfolio trading in MetaTrader 4 has been published:
The article reveals the portfolio trading principles and their application to Forex market. A few simple mathematical portfolio arrangement models are considered. The article contains examples of practical implementation of the portfolio trading in MetaTrader 4: portfolio indicator and Expert Advisor for semi-automated trading. The elements of trading strategies, as well as their advantages and pitfalls are described.
Here you can examine the sample portfolio graph construction
(indicator bottom subwindow) with the target function graph attached: