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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 ?
Left ventricular ejection fraction and left ventricular end-diastolic and end-systolic volumes were evaluated by left ventricular angiography.
In a multivariate analysis, change in left ventricular end-systolic volume was the only significant predictor of long-term survival.
4869 E--peak early mitral valve flow velocity, E'--early LV basal (annular) longitudinal myocardial lengthening velocity, LADi--left atrial antero-posterior diameter, LVEF--left ventricular ejection fraction, LVESV--left ventricular end-systolic volume, LVMI--left ventricular mass index, RFP--restrictive left ventricular filling pattern.
05 -paired Students t test for intragroup comparison of values before and after operation **-One-way AN OVA test for comparison of three groups values before and after operation ***-post hoc Bonferroni test for comparison of between groups values before and after operation LA- left atrium diameter, LVEDD- left ventricular end-diastolic diameter, LVESD- left ventricular end-systolic diameter, LVESV- left ventricular end-diastolic volume, WEST left ventricular end-systolic volume, LVMI- left ventricular mass index, MVA- mitral valve area, PAP- pulmonary artery pressure Table 3.
First angiographic studies (1, 2) found higher left ventricular end-systolic volumes and lower ejection fraction in patients with mitral stenosis than in controls (1, 2).
With respect to LV remodeling, in the HIIT group the LV diastolic and systolic diameters decreased by 12 % and 15%, and estimated LV end-diastolic and end-systolic volumes dropped by 18% and 25%, respectively.

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