I'd like to believe we are seeing accumulation, but I really have no idea how this can be verified. I don't have L2, but I know it just shows the action, price, shares, and MMs. How can you discern accumulation from MMs trading this back and forth just to move the share price?
As for walls, if a fraction of the posters here who claim to be averaging down, or accumulating on dips actually bought simultaneously on one of these dips, walls WOULD disappear. Do this a few times and MMs are out of the hand.
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