A robust trading plan benefits from the diverse characteristics of how markets work. 

Here’s a visual that shows different characteristics and types of Strategies that can be used to balance out a Systematic Investor's entire portfolio.

Starting with the three (3) Main Strategy Types, from left to right…

1. Reversion To Mean (RTM).  A shorter term strategy that exploits the fact that markets pull back before they move higher.  The FREE RSI-2 Strategy fits this criteria.
2. Momentum.  A mid-term strategy that exploits the well documented momentum phenomenon of the market (a stock in motion tends to stay in motion, until it doesn't).  For example, a monthly momentum rotation strategy.  Or, other type of short to mid-term momentum strategy.
3. Trend Following.  A longer-term strategy that capitalizes on the momentum phenomenon further and the fact that markets trend over long periods of time, typically in the longer-term Trend Following category.  (The FREE Super-Charged Momentum Trend Strategy fits somewhere in the middle within the 2nd and 3rd categories.  It is both a shorter to mid-term momentum, as well as a mid-term trend following approach.)
4. Volatility.  Strategies that are based on volatility instruments, or, based on underlying volatility measurements or algorithms and base their trading decisions on same.
5. Seasonality.  Strategies that exploit the well-documented seasonal tendencies of some markets, driven by cyclical behavioural patterns or "calendar" specific events based on fundamentals or other factors that are recurring -- and, provide specific opportunity windows of time to trade with a positive edge.