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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 ?
2009) Endurance athletes' stroke volume response to progressive exercise: a critical review.
The actual value of upper PRL can be calculated from the measured relative stroke volume SV/[SV.
We investigated the abilities of pulse pressure variation (PPV) and stroke volume variation (SVV) to predict fluid responsiveness during robot-assisted laparoscopic prostatectomy, requiring pneumoperitoneum and the Trendelenburg position.
CO) is determined by the number of cycles it produces every minute, heart rate (MR), and the volume ejected in each cycle, stroke volume (SV).
High concentration oxygen changes arterial coronary tone, decreases cardiac output and stroke volume, which further decreases oxygen rich blood reaching its target, further compromising the myocardium.
Severe aortic stenosis results in 1) reduced ventricular stroke volume due to increased after load, which decreases ejection velocity, 2) increased end-systolic volume and 3) a compensatory increase in end diastolic volume and pressure.
These are further subdivided into arterial oxygen saturation, oxygen transport, stroke volume and heart rate.
When the heart needs to pump more blood, it increases stroke volume and heart rate.
In addition, a significant reduction in end-diastolic volume and stroke volume between 20 and 32 weeks of gestation was observed, along with a decline in left ventricular ejection fraction from 5.
The patients with severe CFS had significantly lower stroke volume and cardiac output than the controls and less ill patients.
NEW ORLEANS -- The fat that surrounds the heart is associated with cardiac abnormalities, including low stroke volume and cardiac output, that are independent of body mass index, a study has found.
Increases in cardiac mass, ventricular dimensions, and stroke volume are typically observed in obese adults, accompanied by evidence of diminished ventricular systolic and diastolic function.