Taken from the help section from Webull
Pre-market and after-hours trading on the same trading day will be taken into account when calculating how many day trades are left.
Selling shares owned from a previous day doesn’t count as a day trade.
1, At the start of Monday, you own 0 shares of ABC stock and have 0 day trades.
Buy 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Number of Day Trades : 1
2, At the start of Monday, you own 0 shares of ABC stock and have 0 day trades.
Buy 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Buy 50 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 150 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Number of Day Trades: 1
3, At the start of Monday, you own 0 shares of ABC stock and have 0 day trades.
Buy 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 50 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 50 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Number of Day Trades : 1
4, At the start of Monday, you own 0 share of ABC stock and have 0 day trades.
Buy 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Buy 50 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 50 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Number of Day Trades: 1
5, At the start of Monday, you own 0 shares of ABC stock and have 0 day trades.
Buy 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Buy 50 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 50 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Number of Day Trades: 2
6, At the start of Monday, you own 100 shares of ABC stock and have 0 day trades.
Sell 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Buy 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Number of Day Trades: 0
7, At the start of Monday, you own 100 shares of ABC stock and have 0 day trades.
Sell 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Buy 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Sell 100 shares of ABC — Monday (4:00 AM - 8:00 PM EST)
Number of Day Trades: 1