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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.


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.


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.

References in periodicals archive ?
Changes from baseline in heart rate ([DELTA]HR, panel A), stroke volume ([DELTA]SV, panel B), and cardiac output ([DELTA]CO, panel C) during 30 recovery minutes following the 130% Wat and the 70% Wat tests.
5] and increased mass/end-diastolic volume ratio and reduced RV end-diastolic volume and stroke volume are consistent with compensatory remodeling to lessen wall stress in response to increased pressures, as has been proposed to explain LV concentric remodeling in systemic hypertension (Ganau et al.
If this maneuver induces increases in VTI, and thus the stroke volume index (SVI), by 12.
The stroke volume (SV) is calculated by the difference between the end-systolic and end-diastolic volumes.
Stroke volumes and the ejection fraction decrease while the EDV gradually rises.
The reduced ventricular filling results in a reduced stroke volume and ultimately a reduced cardiac output.
From our laboratory studies, it is clear that stroke volume and pulse pressure (systolic minus diastolic blood pressure) decrease consistently with central hypovolemia, at least on a group mean basis.
In the normal heart, during systole, the contracting fibers develop force that is used to increase intraventricular pressure to overcome aortic pressure and to eject stroke volume.
There is an increase in heart rate, cardiac output, and stroke volume, and a reduction in maximum oxygen uptake which reduces exercise tolerance.
The ccNexfin with Masimo Rainbow SET utilises a single sensor finger cuff (BMEYE) and finger sensor (Masimo Rainbow SET) to capture and continuously measure beat-to-beat blood pressure (sys/dia), mean arterial pressure (MAP), cardiac output (CO), stroke volume (SV), systemic vascular resistance (SVR), derivative of pressure (dP/dt), non-invasive hemoglobin (SpHb), oxygen saturation (SpO2), and perfusion index (PI).