MECHANICAL TRADING SYSTEM
Disadvantages:
• More decisions mean more stress.
• Smaller per-trade profits means few vehicles exhibit enough volatility and liquidity to be profitable.
• Must fight tendency to overtrade or risk losing discipline and/or consistency.
Nondirectionally Biased Mean Reversion Day Trading
Typical duration of trade: minutes to hours
Example: RSI crossover
Advantages:
• Can capitalize on virtually any trading environment—trending, choppy, or mean reverting.
• No overnight margins and ability to “clear one’s head” at close of each trading day.
• More trading opportunities.
• With proper money management, each trade should risk small percentage of working capital.
Disadvantages:
• More decisions mean more stress.
• Smaller per-trade profits mean few vehicles are volatile and liquid enough to be profitable.
• Must fight tendency to overtrade or risk losing discipline and/or consistency.
• Off-floor disadvantage: loss of the bid/ask spread and/or higher commissions. Because such costs are fixed, as time frames are shortened, the viability of these strategies becomes marginalized.