As I explain below the NYSE AD line stayed positive until early May when it ... advance/decline data on difference market averages which includes the S&P 500​, ...SkiptocontentHomeTradingStrategiesOneIndicatorStockTradersMustFollow Moststockinvestorsspendalargeamountoftimeusingtechnicalorfundamentalanalysistopickthebeststock,ETForfundtobuy.Lesstimeisspentondoingequallyrigorousanalysisofthemarket’strendandtoooftentheirstockmarketdecisionsarebasedonafundamentalopinionoftheeconomy.Themajorityoftechnicalanalystsofcoursewilltellyouthatthefundamentaldatabadlylagsthepriceaction.InMarchof2009itwasalmostimpossibletohaveapositivefundamentalviewoftheeconomy.AsIwillshowyoulatertherewerecleartechnicalsignsatthetimethatthestockmarketwasindeedbottoming.InthisarticleIwillfocusontheoneindicatorthatisoftenignoredbymanybutthatshouldbefollowedcloselybyallstockinvestors.Whiletherearealwayssomestocksthatwillrisewhenthemajoraveragesaredeclining,goingagainstthemajortrendisgenerallyneveragoodidea.Bydeterminingthemarket’sinternalstrengthorweaknessyouwillbeabletomakeamorereasoneddecisionwhethertobuyorsellandthisshouldmakeyourinvestingmoresuccessful.Thebestwaytomeasurethemarket’shealthisthroughtheadvance/declinelineorA/Dline.ThemostimportantA/DlineisbasedontheNYSEComposite.Itiscalculateddailybydeterminingthenumberofstocksthatareup(advancing)andalsothenumberofstocksthataredown(decliners).TheA/Dlineisathencumulativetotalofthenumberofadvancingminusthenumberofdecliningstocks.InmanyyearsofeducatinginvestorsandtradersIhavefoundthatmanydonotunderstandtheanalysisoftheA/Dline. (LearnabouttheA/DlinewithTom'sSpecialCourse) InmanyyearsofstudyIhavefoundthattheA/Dlineisthemosteffectiveinabullmarketwhenidentifyingintheendofstockmarketcorrections.InthisarticleIwillshowyouhowIusesupport,resistance,trendlineanalysisandmovingaveragestodeterminethemarket’strendusingtheA/DLine.Whetheryouareaprofessionalhedgefundmanagerora401Kinvestor,2016wasatoughyear.AsIexplainbelowtheNYSEADlinestayedpositiveuntilearlyMaywhenitsh