hello DavidBoy,I think I am on your wavelength here so I will...

hello DavidBoy,

I think I am on your wavelength here so I will give it a crack, I may be wrong

Often when a stock quickly appreciates into a highly overbought state it retraces, maybe to one of the fib levels, lets say 50% of the move

eventually the down trend stops and the stock price moves sideways

the next step in the process is the beginning of a new uptrend? For example see BTA chart

Yes this can be calculated, in fact I am almost finished such an algoritmic trading system (amongst many others)

is that what you were thinking?