Quote from Thunderdog:
But that's the point, isn't it? Sometimes price continues on higher volume and sometimes it reverses. Sometimes price continues on relatively low volume and sometimes it reverses. Have you been able to distinguish in advance which is which? Personally, I have not been able to do so with any practicable reliability. So the question I had to ask myself was, what is the incremental value of this additional variable?
As an aside, let us exclude relatively large spikes in volume from consideration, since the writing is on the price wall as well when such outsized volume spikes occur, with outsized price bar ranges. So I don't think there is incremental informational value in such occurences as it relates to volume. As for notable increases in volume not accompanied by outsized price bar ranges, only the subsequent price action will tell you what's what, since I have found that it can go either way in my own experience with no practicable a priori bias that I, personally, can distinguish. So where, then, is the value in volume? Perhaps your perception is more nuanced in these matters.