What edge worked for you that was really simple? Back when the S&P was a burly $500 per pt there was a simple market fade that worked week after week. On Friday you just faded the opening with a $1000 stop. If Friday opened up from Thursday's close you shorted and vice versa. It apparently worked because at the time there was tremendous focus on Thursday's money supply figures, released after the market closed. There was no night session at the time. The market seemed to over react on the open to the numbers. If I recall, I worked this from around 1986 to 1988 and then like many edges, it deteriorated.