This is the minimum amount required to enter into a position per contract during regular trading hours without carrying that position past the session's close. (optimusfutures.com)
If you place an order after regular trading hours it will be executed as soon as the market opens the following day, exactly when the likelihood of a price distortion is highest. (moneysense.ca)
Shares of the company have gained about 11 % over the past month but dropped slightly during regular trading hours today. (zacks.com)