Call me a conspiracy theorist, but I've watched the L2, and every time ETMM moves, CDRG moves in-step. CDRG stays low on the bid as ETMM goes for high bid or to purchase. CDRG is a firm based in Chicago and run by a guy known to be a brilliant, vanguard investor.
At this point, I'll take anything, but I'm seeing Chicago buying, and I like that.
EDIT: As I typed, in the weirdest thing I've seen yet, WDCO jumped to top bid with 10,000 shares. Very strange.