posted on 06-06-2019
Updated October 1, 2019
What is Open?
In themarkets, open refers to the beginning of the trading day or the price of a security at the beginning of the trading day.
How Does Open Work?
The New York closing price) becomes the opening price, or the open.Exchange has the most famous opening bell. At 9:30 am Eastern time, it rings. At that time, the last trading price for each security on the exchange the day before (the
Why Does Open Matter?
The open is the start of a new day, though it is important tothat that doesn't necessarily trading hasn't been going on right before the open. After-hours markets remain open as do other exchanges in other countries and time zones, which provides opportunity for the price to change right up until the open in many cases.