Hello:
I took Kevin Haggerty's seminar years ago. Still have the original workbook and worksheets showing how to set up the grid the gentleman uses. The "probability" bands that Haggerty proposed are simply common sense. They or variations of them are used throughout the trading community. As has been mentioned the baseline is calculated and bands are set to correspond with 1st second and third deviation if you want. In theory 66% of price action takes place inside the first band. I have no problem with this. Use it, don't use it. You still have to make a decision as price moves toward or away from these areas. You still have to recognize when professional money is coming in to support the move past the "bands" and when it is absent and then price has a good chance of respecting the band and bouncing off. As far as using the grid/sector information, I use it myself today in a modified form. In my opinion, what separates money makers from break even or losers is the ability to make good decisions as price moves into these areas. You have to 1. find a place to enter or exit, and 2. establish and respect your stops. Unfortunately most traders simply don't know how to do either. As many of you know I trade the ES. The sector grid is of limited use (except for bond prices ) with indices because of the way business is done using the S&P to hedge and to speculate. If you are using it to help trade stock, it can be useful. Simply look for supporting signals on the 60 min, the 15 min, the sector and finally the stock to confirm the signal. Works better than 60 percent of the time if you have the discipline and use good money management.By the way, I used to simply calculate the bands manually (good math practice) and keep them in my head (traded a small number of stocks). If the software helps, great. Best To All, Steve46