I have a TD Ameritrade margin account with $10,000 cash in it.
Morning: I buy ABC stock for $10,000.
Noon: I sell my ABC for $10,100, making $100.
Afternoon: I want to buy stock XYZ using $10,100.
Technically, TD Ameritrade must lend money so that I may purchase XYZ. Since the noon sale settles in 2 business days, will TD Ameritrade charge interest? Or is my $10,100 considered immediately settled money?