KeyFeatures
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Key Features1.BaseDateandValue
ThebasedateforTheDowJonesBRIC50IndexisDecember31,2002,anditsbasevalueis100.
2.IndexFormula
TheDowJonesBRIC50IndexiscalculatedusingLaspeyres’formula,meaningitmeasurespricechangesagainstafixed-based-periodquantityweight.AdetailedexplanationoftheLaspeyresformulaisprovidedinsection8.2oftheGuidetotheDowJonesGlobalIndexes.
3.DividendTreatment
TheDowJonesBRIC50Indexiscalculatedinbothprice-returnandtotal-returnformsinU.S.dollarsandEuros.Dividendpaymentsarenottakenintoaccountinthepriceindex,whereasdividendpaymentsnetoftaxesarereinvestedintheindexsampleofthetotal-returnindex.Onlyextraordinaryandspecialcashdividendsareincludedintheindex.Specialdividendsfromnon-operatingincomecontinuetobeincludedintheindexcalculation.
4.Weighting
TheDowJonesBRIC50Indexiscapitalization-weighted.Thefloat-adjustedsharesoutstandingforeachclassofstockareusedtodeterminethecompany’smarketcapitalization.FloatadjustmentsarebasedontherulesinSection7oftheGuidetotheDowJonesGlobalIndexes.Theweightingofeachcomponentiscappedat10%oftheindex’stotalmarketcapitalizationatthequarterlyupdates.
5.Dissemination
Theindexiscalculatedanddisseminatedevery15secondswheneveranyofitsprimaryexchangesareopen.Onexchangeholidays,thepreviousday’sclosingpriceforeachaffectedstockisusedforindexcalculation.Ifacorporateactionbecomeseffectiveonanexchangeholiday,theadjustedclosingpriceforthepreviousbusinessdayisused.
6.StockPrices
TheDowJonesBRIC50Indexiscomputedusingthelast-tradedpricesofitscomponentsduringtheofficialtradinghoursofitscomponents’primaryexchanges.Indexcalculationbeginswhenthefirstofficialopeningcomponentpriceisreceived.Untilaparticularstockopens,itsadjustedclosingpricefromthepreviousdayisusedinindexcomputation.Iftradinginastockishaltedduringasession,itslast-tradedpriceisusedinallsubsequentindexcomputationsuntiltradingresumes.Iftradingissuspendedbeforetheopening,thestock’sadjustedclosingpricefromthepreviousdayisusedtocalculatetheindex.
7.InputData
Real-timestockpricesareprovidedbyReuters.Thelatesttradingpriceisusedforindexcalculation.
Thenumberofsharesisdeterminedseparatelyforeachclassofstock.Thisinformationisobtainedfromavarietyofdatavendors.Thedataisalsosourcedfromthecompaniesthemselves.
Corporateactionsaresourcedfrompublicnewsservices,regulatoryfilingsanddatavendors.Thecompaniesthemselvesareusedasanadditionalsource.
Floatdataisobtainedfromavarietyofsourcesincludingdata ?vendors,exchanges,regulatorsandthecompaniesthemselves
8.ComputationalPrecision
Indexvaluesareavailablewithsixdecimalprecision(note:indexvaluesdisplayedbyvendorsareroundedtotwodecimalplaces).Indexdivisorsareavailablewithuptotendecimalplaces.Additionalprecisionforindexlevelsanddivisorsmaybemaintainedinternallyforindexadjustmentpurposes.Anyvaluesderivedbytheindexcalculationenginefromacorporateactionusedforthedivisoradjustmentsandindexcomputationsareroundedtosixdecimalplaces.
相关参考