empirical evidence on security returns

empirical evidence on security returns

ID：8133604

大?。?.34 MB

頁數：33頁

時間：2018-03-06

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1、Chapter13:EmpiricalEvidenceonSecurityReturnsChapterOpenerPART??IIIp.407INTHISCHAPTER,weconsidertheempiricalevidenceinsupportoftheCAPMandAPT.Attheoutset,however,itisworthnotingthatmanyoftheimplicationsofthesemodelsalreadyhavebeenacceptedinwidelyvaryingapplications.Considerthefo

2、llowing:1.?Manyprofessionalportfoliomanagersusetheexpectedreturn–betarelationshipofsecurityreturns.Furthermore,manyfirmsratetheperformanceofportfoliomanagersaccordingtothereward-to-volatilityratiostheymaintainandtheaverageratesofreturntheyrealizerelativetotheCMLorSML.2.?Regula

3、torycommissionsusetheexpectedreturn–betarelationshipalongwithforecastsofthemarketindexreturnasonefactorindeterminingthecostofcapitalforregulatedfirms.3.?Courtrulingsontortscasessometimesusetheexpectedreturn–betarelationshiptodeterminediscountratestoevaluateclaimsoflostfuturein

4、come.4.?ManyfirmsusetheSMLtoobtainabenchmarkhurdlerateforcapitalbudgetingdecisions.ThesepracticesshowthatthefinancialcommunityhaspassedafavorablejudgmentontheCAPMandtheAPT,ifonlyimplicitly.???Inthischapterweconsidertheevidencealongmoreexplicitandrigorouslines.Thefirstpartofthe

5、chapterpresentsthemethodologythathasbeendeployedintestingthesingle-factorCAPMandAPTandassessestheresults.ThesecondpartofthechapterprovidesanoverviewofcurrenteffortstoestablishthevalidityofmultifactorversionsoftheCAPMandAPT.Inthethirdpart,wediscussrecentliteratureonso-calledano

6、maliesinpatternsofsecurityreturnsandsomeoftheresponsestothesepuzzlingfindings.Finally,wepresentinterestingresearchonstockreturnsthatexaminesthesizeoftheequityriskpremium.Conventionalwisdomhasheldforalongtimethatthehistoryofreturnsonequitiesisquitepuzzling.Recentstudiesaddresst

7、hepuzzle.???WhylumptogetherempiricalworksontheCAPMandAPT?TheCAPMisatheoreticalconstructthatpredictsexpectedratesofreturnonassets,relativetoamarketportfolioofallriskyassets.Itisdifficulttotestthesepredictionsempiricallybecauseexpectedreturns,covariances,andtheexactmarketportfol

8、ioareunobservable(seeChapter9).Toovercomethisdifficulty,asing

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