After-Hours Trading - AHT

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Dictionary Says

Definition of 'After-Hours Trading - AHT'

Trading after regular trading hours on the major exchanges.

Also known as the "after-hours market".
Investopedia Says

Investopedia explains 'After-Hours Trading - AHT'

This was once reserved for institutional investors, but now individuals may also trade after hours. Participation by market makers and electronic communication networks (ECNs) is voluntary and, as a result, this kind of trading may offer less liquidity than that done during normal hours of trading. If you are trading in pre-market or after-hours trading, you should always use a limit order.

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