TheKeltnerChannelisbasedontheAverageTrueRangeandissensitivetovolatility.Itmaybeusedinplaceofstandarddeviation(Bollinger)bandsorpercentageenvelopes.
Overview
TheKeltnerChannelismadeupoftwobandsplottedaroundanExponentialMovingAverage(EMA),usuallythe20-dayEMA.
Pricesbreakingthroughthebandsoftenproducebuyandsellsignals.TheindicatorwasoriginallydevelopedbyChesterKeltnerandlatermodifiedbyLindaRaschketouseanaveragetruerange(ATR)calculatedover10periods.
Interpretation
Aswithallenvelopeorbandsystems,theprobabilityisthatpricewillremainwithintheenvelope.Whenpricebreaksthoughtheenvelope,itcanbetakenasasignaltoeitherbuyorsell.
Whenpricescloseabovethetopband,thisoftenmeansabreakoutinupwardvolatilitytobefollowedbyhigherprices.Whenpricesclosebelowthebottomband,pricesareexpectedtomovelower.
Inarisingmarketthemiddleline,or20periodEMA,shouldprovidesupport.Conversely,inafallingmarketittendstoprovideresistance.
Aswithalltrendfollowingsystems,theKeltnerChannelworkswellinuptrendsordowntrends,butdoesn'tworkwellinasidewayschannel.Asatrendfollowingsystemitisnotmeanttocatchtopsorbottoms.
Keltnerchannelsshouldbeusedincombinationwithotherindicators,suchasRSIorMACD,toprovideconfirmationofthestrengthofamarket.Anexitstrategyutilizingtrendlinesandotherindicatorscanbeparticularlyimportant,ascanbeseenfromtheexampleabove.Waitingforthepricetoclosebelowthelowerbandoftenerodesmuchofthepotentialprofitsfromagoodmove.
ThecalculationforKeltnerChannel,basedonATR,isasfollows:
ForthetoporPlusBand,theATRiscalculatedover10periods,doubledandaddedtoa20periodexponentialmovingaverage
ForthebottomorMinusBand,theATRiscalculatedover10periods,doublesandsubtractedfroma20periodexponentialmovingaverage
Signals
Whenpricescloseabovetheplusband,itisasignalofstrengthandrisingprices
Whenpricesclosebelowthenegativeband,asignalthatpriceswilldropisindicated
Signalsstayineffectuntilthepricescloseacrosstheoppositeband.Thisshouldoftenbetempered,however,withtheuseofotherindicatorstoprovidebetterexitopportunities.
Furtherinformation
AlsoseetheoverviewonEnvelopes&Bands;aswellasBollingerBands,thePriceChannelindicator,andAverageTrueRange.
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