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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 ?
Impact of Hospital Volume on Racial Disparities in Cardiovascular Procedure Mortality.
Preliminary logistic regressions evaluated the relationship of each outcome with hospital volume only to establish baseline or unadjusted odds ratios for small and moderate volume hospitals referenced to high volume hospitals.
Interestingly, after adjusting for confounders, hospital volume was not generally related with improved outcomes, exerting marginal impact compared to hospital teaching/CC status (1%-2%).
10) found a significant different crude 30-day mortality rates according to hospital PCI volume, but did not find a relationship between hospital volume and 30-day risk-adjusted mortality rates following PCI in Korea.
Hospital Volume and Surgical Mortality in the United States.
Hershey Medical Center, Hershey, said there is a fairly large body of literature looking at the impact of surgeon and hospital volume on the outcomes of bariatric surgery, but that the Penn State group, spearheaded by Dr.
Two systematic reviews examining the hospital volume of AAA repairs and patient outcomes found a significant association between the number of AAA repairs a hospital performed and patient mortality (Henebiens et al.
Hospital volume did not appear to have an impact on recurrences or mortality in the retrospective study reported by Dr.
To determine the association between hospital volume of surgical procedures and long-term surgical mortality, Dr.
One of the findings of their study, which retrospectively collected data on hospital volume of 12 surgical procedures performed in 1,498 hospitals and mortality data, was that hospitals that performed a greater volume of procedures had lower related inhospital mortality rates (Luft, Bunker, and Enthoven 1979).

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