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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 ?
Because blood volume and Hct are inversely related, Hct can be increased by achieving optimal blood volume reduction.
On the other hand, the increased pulmonary blood volumes result in a decrease in static lung volumes due to the volume compression.
The cerebral oxygenation and blood volume responses were continuously monitored by a dual-wavelength NIRS (Model MRM91, MicroRunman, NIM Inc, Philadelphia, Pennsylvania).
For example, many doctors recommend that people with orthostatic intolerance drink extra water and consume salt to increase their blood volume.
7] Therefore, we used a special probe with a 2-cm distance between each optode to measure the change in blood volume in the skin tissue.
In studies of the effect of blood volume per spot on analyte recovery, the total Phe concentration of the blood used was equal to the endogenous Phe, which was not measured, plus the Phe enrichment.
In addition, the company said it has entered into an agreement to install its BVA-100 Blood Volume Analyzer at a Hospital in Minnesota within the next two months.
The key words searched were: blood volume monitor, hematocrit based blood volume monitor, intradialytic hypotension, hypotension, Sc[O.
Daxor Corporation said that its published studies, using the BVA-100, have shown that blood volume measurement is important in treating heart failure, critical care patients in intensive care units and in diagnosing the true status of complex anemias and syncope (fainting).
Due to plasma refilling from the albumin, EG's blood volume increased to +2%, with a paradoxical drop in blood pressure to 76/39 mmHg.
The panel says other safe alternatives, such as intraoperative blood salvage (collecting blood from a patient during an operation for subsequent use) and hemodilution (removing blood and substituting other fluids to keep blood volume up) are useful in selected cases, while some of the more innovative approaches, including artificial blood, remain experimental.