From the looks of it, these guys are pro's sucking up shares from frustrated/impatient traders, taking control of the float then running the stock hugely.
From 10/25/2019 - 10/31/2019 SBDG ran from .02 to $1 in 3 trading days.
From 4/15/2021 - 4/26/2021 PLYN ran from .13 to .49 in 7 trading days.
Take a look at the wide spread and the non movement of bid/ask sizes, the MM is in on it too. MM's are watching this stock closely on Level 3 monitoring all day, stop, good till cancelled orders, etc.
They might drop it hard after this info but that is to be expected, they're in it too deep to turn away from their main objective. Seriously, $2 to $3 per share wouldnt surprise me.