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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 ?
The potential for mathematical coupling exists between thermodilution cardiac output and right ventricular end-diastolic volume (RVEDV) because RVEDV is derived from stroke volume which is calculated from thermodilution cardiac output (88).
Continuously assessed right ventricular end-diastolic volume as a marker of cardiac preload and fluid responsiveness in mechanically ventilated cardiac surgical patients.
Although the preload measures of global end-diastolic volume index and pulmonary artery occlusion pressure correlated with cardiac output (Figure 3) in the postoperative period, readings for both were substantially above the reference range.
5% reduction in the preload measure global end-diastolic volume index.
Concomitantly, the absolute decreases in LV end-systolic volumes and end-diastolic volumes at 18 months in the WJMSC group were significantly greater than those in the placebo group.
TOPROL-XL has been shown to improve ejection fraction and delay the increase in LV end-systolic and end-diastolic volumes after six months of treatment (these are functional markers of cardiac remodeling).