BMIC is used by Biltmore International Corporation for routing their orders. BMIC and others like VFIN, BMAK, etc are used by institutions only. So when they are on the L2 it means there is institutional buying/selling taking place.
However, seeing these market makers doesn't always mean there is an institution who is doing the actual buying/selling. A retail trader who uses a live broker can call in his order and the broker can use one of the institutional market makers to route the order. But generally speaking those kinds of orders are usually small and over with very quickly.
In the case of FNRC, it seems most likely that BMIC is being used to dilute the crap out of the stock. That's why he's been on the ask for so long at this level & hides his true order size.
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