With all respect Belpat, this has been going on for a very long time. Anon has been a very active player flipping their pennies. Often it is TD on the other side but now there seem to be other houses playing the flip. Even in your chart today, TD is largest net buy - Anon largest net seller. I believe much of this is the same entity trading with themself to create some volume and make a few bits and they've been doing it for years. Eventually you will get used to the frustration too.
GLTA