That is simply not true. I was monitoring AMC from TOS while all this was happening because I had bought 10k shares a few hours earlier and was expecting a rapid rise at market opening. Share price went from 8 to 16 in 15 minutes, triggering 2 breakers in that time when the newswires popped stating that RH, TD and IB had stopped the ability to buy shares. At that moment, AMC share price dropped from 16 to 7 in 45 minutes and triggered another 2 or 3 breakers. That's cause-consequence. Later, the price fluctuated back in the 10 to 13 range, because TD (my brokerage) was allowing limited purchases while setting breakers off every time the price rose by $1, effectively throttling the buy side and successfully controlling market activity, which isn't their job.
I bought 10k shares on margin several hours before all this blew up, with the intention to sell at profit several hours later. A simple day trade. However, TD's sudden decision leaves me hanging on margin with a controlled share price far below my buy.
Is this on me for taking risk or on TD for suddenly altering the rules of the game? And why or who pushed the brokerages to impose sudden and drastic restrictions on the buy side? You just need to follow the trail of who stands to benefit most from this.