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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 ?
1/2], elimination half life; CL/F, clearance after extravascular administration; Vz/F, volume of distribution after extravascular administration.
3b) for the volume of distribution, the blood alcohol concentration can be predicted as
The volume of distribution during steady-state plasma drug concentration was calculated as (mean residence time) x (total body clearance).
Each entry begins with the known pertinent pharmacokinetic data, including half-life, volume of distribution, fraction of protein-bound drug, p[K.
In the patients studied, IT-101 showed longer half life, lower clearance and lower volume of distribution than seen in patients treated with other camptothecin-based drugs.
Conclusion and Clinical Relevance--Results indicated hydromorphone hydrochloride had high bioavailability and rapid elimination after IM administration, with a short terminal half-life, rapid plasma clearance, and large volume of distribution in American kestrels.
25L/kg/h, steady state volume of distribution (vdss) was 0.
Usefulness of the software algorithm was assessed based on its ability to eliminate sub-optimally positioned catheters that would likely limit drug distribution due to leakage into cerebrospinal fluid (CSF) spaces, and on the match of the volume of distribution of the infusate as shown by SPECT and simulation.