BUT, using that 1-day logic ... after 1 up day, the market should go higher forever ... LOL ( since after an up day it goes up ) i.e. if you go long after one up day and your day ends higher, do you hold overnight since you should be buying the next day anyway ?? OR . do you close your position every day ?? (daytrading rules apply ??) I think more detailed rules are necessary for all combinations and for holding overnight. These combinations should do it: <pre> YESTERDAY TODAY WhatToDo UP DOWN UP UP DOWN DOWN DOWN UP </pre>