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A rule that stipulates when a security should be bought or sold according to its price action.

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.
References in periodicals archive ?
Membrane filter techniques for identification of Escherichia coli in water: comparison of mFC and mEndo LES.
This active lid lifts the membrane filter from the base of the filter unit so the filter can be safely transferred onto the pre-filled agar dish.
Vibrating the filtering membrane filter prevents buildup on the surface of the membrane and allows higher flow rate," says Jack Cole, corporate vice president of healthcare marketing for Pall Corp.
Based on compatibility, the membrane filter of choice for buffer filtration is PES.
The BECO MEMBRAN PS Aqua membrane filter cartridge is specifically designed for mineral water and table water filtration.
The new system utilizes vibrating membrane filtration (VMF) technology and encapsulated hydrophilic polyethersulfone membrane filter modules.
For sterile filtration before bottling, the BECO MEMBRAN PS Pure membrane filter cartridge, which can be tested for integrity and has an absolute retention rating of 0.
APC FILTRATION in Canada offers DuPont Teflon[R] membrane filter media for several applications.
Featuring a high asymmetric pore structure, the membrane filter cartridge range extensions deliver exceptionally high flow rates combined with outstanding service life.
This section also deals with properties of Donaldson Membrane's Tetratex[R] Microporous ePTFE membrane filter media, available in four efficiencies:
The unit utilizes the Gelatin Membrane Filter Method, which produces highly accurate and reliable results when retaining organisms such as Bacillus sub-tilis niger at levels as high as 99.
Pall is also launching the Ultipleat(R) SP DR Filter, a 30 nanometer rated highly asymmetric membrane filter specifically developed for wet chemical surface preparation applications.

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