FYI, This (see link below) takes effect Sept 28, but I received a message from TD Ameritrade that,
“Ahead of the regulatory enforcement date, we will only accept orders to liquidate positions (i.e. no new buy orders) starting August 13, 2021. After the amendment officially goes into effect on September 28, 2021, it may be more difficult to liquidate these securities. Quoting and market liquidity may also be very limited.”
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