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The period at the beginning of the trading session officially designated by an exchange, during which all transactions are considered made "at the opening." Related: Close.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.


1. The beginning of a trading session on an exchange.

2. The first price of a security at the beginning of a trading day. In this sense, the opening is also called the opening price.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved


1. The beginning of a trading session.
2. The initial price at which a security trades for the day. Also called opening price.
Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.


The first transaction in each security or commodity when trading begins for the day occurs at what's known as its opening, or opening price.

Sometimes the opening price on one day is the same as the closing price the night before. But that's not always the case, especially with stocks or contracts that are traded in after-hours markets or when other factors affect the markets when the stock or commodity is not trading.

The opening also refers to the time that the market opens for trading or the time a particular instrument begins trading. For example, New York Stock Exchange (NYSE) opens at 9:30 ET. The first transaction in a single security may be at that time or at a later time.

Dictionary of Financial Terms. Copyright © 2008 Lightbulb Press, Inc. All Rights Reserved.
References in periodicals archive ?
Waitrose's opening times over the Bank Holiday weekend will vary.
As a guide, Waitrose opening hours over the Bank Holiday Weekend will be as follows:
Asda has advised us that stores in England and Wales will operate reduced opening times, while Scottish stores will open as normal.
General Asda opening hours this Bank Holiday weekend will be as follows:
Monday 26 August - Opening and closing times for stores in England and Wales will vary region to region and it's recommend that customerscheck the store locator tool online.
General Morrisons opening hours this Bank Holiday weekend will be as follows:
Opening: "No, I dont fret either if Harvard is not willing."
Opening: "I do not know who sent me this." (note on a copy of clipping from New York World).
Opening: "We were so glad of your letter We do miss you."
Opening: "The Huxley's are staying the summer and Angelino is building a bathroom on the little old cabin."
Opening: "It was nice to hear from you I do wish I could ask you to stay with me."
Although the rise in the active job openings-to-applicants ratio is the result of an increase in job openings on the back of an economic expansion and a decrease in job applicants, the effect of these mismatches by industry or by occupation is also significant.