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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 ?
If found positive of ERV, they should be reported to the government, said the source.
But, for hot-dry condition (shown in Figure 2, outdoor conditions with higher temperature than the indoor and lower humidity than the supply), ERV operation cools the outdoor air, but may impose an unnecessary dehumidification in the cooling system.
Chicago specified that this ERV must meet the demanding requirements placed on all of its garbage trucks.
Size: The Heat and Energy Recovery Ventilation System (HERV) must be relatively small and compact similar to most HRV and ERV systems on the market
In addition, the Prowler provides wheel or track mount interchangeability, a feature offered by no other ERV platform.
This reduction in the size of the HVAC equipment helps offset the initial cost of the ERV, which continues to provide the owner with a positive cash flow over the life of the system, typically more than 15 years.
ERV systems present a potentially effective solution to both these issues because of their unique functioning that allows them to capture and recycle building energy to preheat, pre-cool, humidify or dehumidify the incoming air, instead of exhausting the energy to the outside.
The new ERV replaces our 12 year old ERV which will be reassigned to the Shiawassee County Service Center and will enable us to have better coverage in our five-county area.
Highlights of the briefing include an analysis of ERV markets, including stand-alone ventilation, DX package systems and air handling unit (AHU) systems.
OTTAWA -- Everton Resources (TSX VENTURE:EVR) is pleased to announce that its common shares have been listed and are now trading on the Open Market of the Frankfurt Stock Exchange under the trading symbol ERV.
as the recipient of the 2007 North American Frost & Sullivan Award for Industry Innovation & Advancement in the energy recovery ventilation (ERV) market for pioneering the development of ERV technology.