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Trading System #2–Consecutive Directional Close (Part 10)

I am currently in the process of backtesting other broad-based indices with the CDC trading system.  In http://www.optionfanatic.com/2012/11/23/trading-system-2-consecutive-directional-close-part-9, I backtested QQQ (Nasdaq 100).  Today I will backtest IWM (Russell 2000 small caps).

Once again I will backtest x = 3, 4, 5, 6, 7 and N = 3, 4, 5, 6, 7 with a minimum total trades number of 55 (see http://www.optionfanatic.com/2012/11/16/trading-system-2-consecutive-directional-close-part-5).  I will include trade delays for buy and short trades with the understanding that any decent results I get may well be improved in live trading.  Here are the results as sorted by subjective function (RAR/MDD):

These numbers seem lackluster with a couple systems gaining nothing and most RAR/MDD < 5. As done with SPY and QQQ, I will next backtest long trades only:

Unlike SPY and QQQ, these numbers are actually worse.

When I see patterns in system development, I really want them to be robust.  Why should long-only trades outperform for S&P 500 and Nasdaq stocks but not small caps?  I’m sure imaginative types could come up with potential explanations but it makes me skeptical about the pattern since they’re all broad-based indices.  If it’s not a real pattern then perhaps I should go back to studying long and short trades together.  If the results are not satisfactory for both then perhaps I should waste no more time and move onto the next trading system concept.

This backtesting result has raised many conflicting points worthy of future discussion.  I will sleep on it with hopes of a clearer head upon awakening!