AccumulationAlso there is what they call a black book for trading large amounts of shares, which you and I do not see. Large blocks are requested at a certain price. When those request are covered the sale goes through without showing up on the volume for the day. Not all is transparent. If they are large enough they do have to be reported, but not immediately.$0$0$0$0So, you really can not be too sure of the actual volume on any given day.$0