I have found several times the expression "a price drift" or "price drifts" refering to stock price movements (drift(s) being used as a noun and not a verb).
I have looked up dictionaries and there are many possible definitions of drift as a noun, so I am not sure what the expression implies. Does it merely mean "a price change"? Or does it convey other subtleties such as randomness, lack of direction, lack of cause, gradualness or slowness in the movement (these being some of the definitions...)? If the latter is the case, which one of the many possible subtleties does it convey?
Thanks.