If you’re trading using your intraday buying power balance, the expectation is that positions are liquidated prior to the close of the trading session in which you opened the position. Using the intraday buying power balance to open a position and hold it overnight increases the likelihood that a margin call is issued and due immediately.
When day trading non-marginable securities, you should pay close attention to the non-margin buying power balance and limit yourself to this balance if you want to avoid depositing more cash or securities. Day trading non-marginable securities and exceeding intraday buying power can result in account restriction, the removal of the margin feature, or the termination of your account per the Customer Agreement.
Fidelity monitors accounts and we conduct reviews throughout the day. If your account requires attention, you may receive an alert indicating that you must take immediate action. You should be aware of the risks involved when you use your intraday buying power balance and be prepared to deposit cash or marginable securities immediately. If the equity is too low, account liquidation can occur immediately without Fidelity notifying you
If you’re unsure if you’ll close a position or several positions in the same trading session, use the Margin Calculator and use your margin buying power balance