You do not pay short borrow fee on a short stock position opened and closed intraday.
If you have a short position in a stock at market close, you will pay the borrow fee for the next day.
If you do not have a short position in a stock at market close, but take a short position during after-hours and keep it overnight, will you pay the borrow fee for the next day?
If you have a short position in a stock at market close, you will pay the borrow fee for the next day.
If you do not have a short position in a stock at market close, but take a short position during after-hours and keep it overnight, will you pay the borrow fee for the next day?