This stock was short over 100% of the float and dealers were short gamma. They got out of this in the way that would guarantee they could save themselves, forced liquidation.

They picked the least painful option for themselves. Three options existed:

- Halt all trading - Halt buying - Halt selling

Everyone is pissed no matter what. The first is perhaps the most fair. The last helps the big institutions in this circumstance, the second retail traders.