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This is the daily number of shares of a security that change hands between a buyer and a seller. Also known as volume traded. Also see Up volume and Down volume.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.


The amount of trading sustained in a security or in the entire market during a given period. Especially heavy volume may indicate that important news has just been announced or is expected. See also average daily volume.
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.


Volume is the number of shares traded in a company's stock or in an entire market over a specified period, typically a day.

Unusual market activity, either higher or lower than average, is typically the result of some external event. But unusual activity in an individual stock reflects new information about that stock or the stock's sector.

Dictionary of Financial Terms. Copyright © 2008 Lightbulb Press, Inc. All Rights Reserved.
References in periodicals archive ?
As establishment of normal pregnancy reference ranges appears imminent, clinical laboratory scientists may do well to consider the total plasma volume (differences) between normal pregnant and PE patients that result in hemodilution and relative hemoconcentration.
Plasma volume changes in middle-aged male and female subjects during marathon running.
The role of osmolality and plasma volume during rehydration in humans.
Intracellular fluid moves into the plasma and extracellular fluid spaces resulting in the contraction of the intracellular compartments and restoration of plasma volume. As a result, signs and symptoms of hypovolemic shock may not be present; however, membrane excitability and cardiac contractility are affected by altered plasma calcium and potassium levels.
To determine if heat acclimation changed the physiology of the time trial performance at room temperature, data from the performance trials were used to create difference scores for the mean change in core temperature, arterial oxygen saturation, plasma volume shifts, and heart rate between the heat condition and the neutral condition.
It could be thought that the difference in cardiac output change may also be caused by decreased plasma volume in subjects with postural hypotension.
Plasma volume decreased in both the horizontal and pendent arm during exercise.
[9] In one of the studies carried out in Germany, results showed that for brief exercise duration and low-intensity training programs, the red cell mass remained constant and only short-term shift in the plasma volume was observed whereas endurance-trained athletes showed an increase in hemoglobin concentration and RBC count.
Instruments that utilize a predilution step assume a normal ratio exists between the plasma water volume and the total plasma volume (2).
However the loss of ECF volume causes depletion of plasma volume (hypovolaemia) and a drop in blood pressure.
Although use of crystalloids (or) colloids for plasma volume is controversy; colloids are usually given to prevent and treat Hypovolemia.
Eight hemodialysis facilities were assigned to the education-only technique and seven to the education plus relative plasma volume monitoring program.