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1. An act that requires use of resources or time. In Program Evaluation and Review Technique (PERT), an activity is represented by an arrow on a PERT chart.

2. In investing, the amount of a security's relative trading volume; that is, the amount of money flowing into and out of a security in trading. A high amount of activity means that many shares of the security are being bought and sold at a high rate, while a low level of activity indicates the opposite.


The amount of relative trading volume in a security.
References in periodicals archive ?
Cardiff inmates enjoyed less than the recommended 24 hours a week purposeful activity during 2001-2002.
It has improved and some of the developments and new services it has in progress, in resettlement and purposeful activity for instance, are very promising.
But they certainly haven't more staff and you have cuts in purposeful activity.
The Birmingham Prospectus may give the impression of purposeful activity, but there is little to distinguish it from the numerous previous policy documents gathering dust on council shelves.
An HM Chief Inspector of Prisons report found that HMP & YOI Parc in Bridgend, was unable to meet the inspectorate's tests of safety, respect and purposeful activity.
The main criticism in the report was that the overcrowded jail offered "too little by way of purposeful activity for its prisoners".
Liverpool was failing to do this satisfactorily,offering education to only 18pcof prisoners and levels of purposeful activity significantly lower than other similar prisons.
Boundless Adventures' environmental initiatives in Toronto to aid in the restoration of the Don River watershed while engaging clients with special needs in a constructive and purposeful activity.
The inspection found that outcomes for women were good or reasonably good against each of HMI Prisons' four main tests - safety, respect, purposeful activity and resettlement - though there was room for improvement in each of the areas.
Parkhurst badly needs regional and national support to ensure the restoration of basic levels of safety and decency, together with investment to increase purposeful activity.
However, in many other areas, including purposeful activity and resettlement, staff and managers are to be commended for what they have achieved.
Holme House reported the country's second lowest time spent on purposeful activity - 5.