I have looked into developing a system, but of course it takes a lot of determination to follow it. I have seen that real time with a friend of mine. A few losses and you want to throw it out the window. LOL. Getting the same pricing that yahoo shows also is a challenge sometimes.
Note that this doesn't work with every etf. I don't think it works very well for MDY, for example.
Also, giving credit where it's due, I learned this from James Altucher, who learned it from soemoen else. His books are pretty good imo. One client of his said that he would buy all of Altucher's books when they came out and burn them so no one would find out the secrets. LOL
Market Data 
Markets 
AI
