Looks to me like the B&A is being worked so someone can work up 80k - 100k shares at a whack. Perhaps buying these decent sized blocks and then throwing small blocks of them back at the bid to push it down, and again buying large blocks lower yet. Seems the only way to put a stop to it would be for buyers to step in front and pickup the shares being dropped on the bid, at some point they will have to retreat...having given up their position.
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