Professional Trading Portfolio is a portfolio built by Professional Breakout Trading System and Professional Reversal Trading System that are 100% mechanical Forex systems created for Metatrader4.

The concept behind the creation of the portfolio is that combining two winning strategies will achieve a significant increase in returns while reducing the risk.

The advantage of the portfolio is that its component systems work well in different market conditions and are built around different market models and concepts - Volatility Breakout and Intraday Reversal, which are mutually consistent.

Source - http://professionaltradingsystems.com/trading-systems/trading-system-portfolio/