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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 ?
3 [micro]L) was used to measure blood glucose concentrations with the veterinary glucometer, and another 50 [micro]L was used to measure packed cell volume (PCV) by the microhematocrit tube method.
0 Packed cell volume (%) 41 White blood cells (x [10.
Ideally, complete assessment of erythrocytes includes evaluation of the packed cell volume (PCV), total red blood cell (RBC) count, hemoglobin (Hgb) concentration, calculated RBC indices, reticulocyte count, and RBC morphology.
In addition, significant age-related differences were noted in red and white blood cell counts, packed cell volume, hemoglobin concentration, mean corpuscular volume, mean corpuscular hemoglobin concentration, fibrinogen level, and heterophils, lymphocytes, and eosinophils (P < .
Packed cell volume results ranged widely, probably in response to increased oxygen demand for migration.