That is true of TD Ameritrade which announced. By January 31, 2021, TD Ameritrade will restrict orders in Caveat Emptor designated OTC securities to liquidating trades only. And Fidelity which has prevented buying Caveat Emptor securities for a long time. And effective Nov 21 2020 E*trade does not allow it either. But when did the other brokerage houses announce a change in trading CE securities? TIA