The cut-off for after hours trading of US stock remains the same as it does today; trading until 8pm ET (excluding early closes) is considered for that day’s trade.
What is the cut-off time for after-hours trading?
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What trading permissions do I need to trade U.S. stocks?
Can I trade in fractions in the US overnight trading session?
Who is eligible to trade in the US overnight trading session?
What products can be traded in the US overnight trading session?