This is the updated chart as of yesterday afternoon.
Typically it is not a good idea to override a proven working trading system. But in this case I am happy that I used discretion against those recent buy signals. I had doubts because they were just about 20 to 30 points off the all time high of S&P, and based on the size of the previous blue spike, it was hard for me to believe that was all the pullback there was. But obviously that was assuming the sell signal was valid, which I was not sure at that timeï¼ hence all the hesitation and dilemma. Anyway if I had to make an excuse for deviating from system-generated signals, I guess I could say I used a filter rather than just gut feeling.
On a side note, the ETFs I commented on in previous post referred to stock index ETFs. For ETFs involving commodity or VIX futures, additional mathematical rules may be at play.
On a final note, I sort of let this thread die during the summer. In addition to the good weather, another reason is that I noticed the ETFs included in the baskets of stocks from which these signals were generated may be causing noises, especially when market is making big moves. Therefore I am trying to tease out the ETF-related noises, and see if that will give me better signals. This will take some time. My system is a work-in-progress, and probably will always be, as any trading systems. Therefore I will focus on work and stop posting for a while. Maybe I will resurface in a few months. Ciao for now.