that is correct. we do not want to increase the memory usage, which would occur if we were to store that extra field with every quote
Agreed, but reversal is normally short term. The days that we get tick readings +1000 are likely going to be positive days. IMO the reversal from a +1000 tick reading is usually short lived and, if accompanied by an up day with strong volume, is time to get long or add to longs.