Massachusetts regulator says GameStop speculation is a danger to whole market as TD Ameritrade restricts trading Written on January 27, 2021. Posted in PT Global Economy. This content is restricted to site members. If you are an existing user, please log in. New users may register below.Existing Users Log InUsername or EmailPassword Remember Me New User RegistrationChoose a Username*First Name*Last Name*Email*PasswordConfirm Password*Required field Previous Next