Filter

(redirected from High efficiency particulate air filter)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
Related to High efficiency particulate air filter: HEPA filter

Filter

A rule that stipulates when a security should be bought or sold according to its price action.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.

Filter Rule

In technical analysis, an arbitrarily set percentage of increase or decline in a stock's price that the analyst sees as an indicator to buy or sell the stock. For example, the analyst may set his/her own filter rule at 15%. If the stock rises 15%, the analyst recommends buying; if it falls 15%, he/she recommends selling. While the particular percentage is subjective, one arrives at it by observing the stock's historical trends. The filter rule exists to help the investor avoid buying or selling at insignificant or anomalous changes in price. However, many analysts do not believe that the filter rule consistently produces profits for the investor.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved
References in periodicals archive ?
Along with HEPA filters, high efficiency particulate air filters, however, this kind of thinking offers cleanroom designers much greater opportunities to play tunes in terms of balancing out the requirements for air cleaning--"which is, after all, what a cleanroom is actually about," says Gibson--and the need for air-conditioning, heating and cooling.
(6.) High Efficiency Particulate Air filters can remove 99.97 percent of airborne particles 0.3 microns in diameter.

Full browser ?