Q Jin Zhang 2011a
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Q Jin Zhang 2011a
THEACCOUNTINGREVIEW
Vol.86,No.2
2011
pp.605–635AmericanAccountingAssociationDOI:10.2308/accr.00000028
InvestmentGrowthandtheRelationbetween
EquityValue,Earnings,andEquityBook
Value
ShengquanHao
ShanghaiJiaotongUniversity
QingluJin
ShanghaiUniversityofFinanceandEconomics
GuochangZhang
HongKongUniversityofScienceandTechnology
Abstract:UsingZhang 2000 asthetheoreticalbasis,wepredictandempiricallytest
theeffectofinvestmentgrowthontherelationbetweenequityvalueandaccounting
variables.We ndthat 1 growthincreasestheslopeinthevalue-earningsrelationfor
high-pro tability rms consistentwithgrowthhavingpositiveNPV ,buthasaninsig-
ni cantornegativeeffectontheslopeforlower-pro tability rms consistentwith
growthhavingnon-positiveNPV ; 2 givenearnings,growthincreasesthe positive
slopeoftherelationbetweenequityvalueandequitybookvalueforlow-pro tability
rms,butreducesthisslopeandcausesequityvaluetodecreasewithbookvaluefor
high-pro tability rms;and 3 givenpro tability ROE ,equityvalueuniformlyin-
creaseswithbookvalue,andgrowthincreasestheslopeofthisrelation.Wealso
examinethevaluationimpactofpastinvestmentactivitiesthatarisesfromaccounting
conservatism.We ndthattheearningscoef cientisgreaterintheyearsfollowing
fasterinvestmentincreases whichcauseearningstobemoreconservativelystated .
Keywords:investmentgrowth;equityvaluation;earnings;equitybookvalue;
pro tability;conservatism.
DataAvailability:Thedatausedinthisstudyareavailablefrompublicsources.
WethankPeterChenforhisinvolvementandinputduringearlystagesofthisproject.Wealsothankthreeanonymous
referees,GaryBiddle,BobBowen,KevinChen,ZhihongChen,JerryFeltham,InchiHu,KunJiang,CharlesLee,Clive
Lennox,StevePenman,TerryShevlin,PaulZarowin editor ,TianyuZhang,andworkshopparticipantsatHarvardBusi-
nessSchool,HongKongUniversityofScienceandTechnology,KoreaUniversity,NationalTaiwanUniversity,Singapore
ManagementUniversity,UniversityofBritishColumbia,UniversityofToronto,andUniversityofWashingtonfortheir
comments.ProfessorJinacknowledgesthe nancialsupportoftheMOEthroughtheInstituteofFinanceandAccounting
atSUFEandoftheNationalNaturalScienceFoundationofChina projectnumbers71032005and71072036 .Allerrors
areourown.
Editor’snote:AcceptedbyPaulZarowin.
Submitted:December2008
Accepted:July2010
PublishedOnline:March2011
605
606Hao,Jin,andZhang
I.INTRODUCTION
rowthopportunitiesconstituteanimportantpartof rmvalue MillerandModigliani
1961;DixitandPindyck1994 .Wheninvestorsdetermine rmvaluebasedonreported
accountingdata,itisessentialthattheyconsiderhowmuchthe rmisexpectedtogrow.
ButasHolthausenandWatts 2001 observe,empiricalresearchonaccounting-basedvaluation
haslargelyneglectedthegrowthfactor.Inthisstudy,wereexaminetheaccounting-valuelinkby
http://wendang.chazidian.comingthereal-options-basedmodelof
Zhang 2000 asthetheoreticalbasis,wepredictandempiricallytesthowtherelationbetween
equityvalueandaccountingdatabehavesinadistinctlynonlinearfashionand,inparticular,how
investmentgrowthmediatesthisnonlinearrelation.
Inthisstudy,growthreferstoincreases ordecreases intheamountofcapitalinvestedin
businessoperations.1Economicreasoningsuggeststhatwhetherinvestmentgrowthenhances
valuegenerationdependsonpro tability,2de nedasearningsinaperioddividedbytheequity
bookvalueatthebeginningoftheperiod ROE .Pro tabilityrepresentsa rm’sabilitytogen-
eratevaluefrominvestedcapital,thusindicatingthedesirabilityofincreasingorreducingthe
scaleofoperations.Mirroringitsinvestment-guidingrole,pro tabilitythushelpsinvestorstoinfer
the rm’scourseofoperationsgoingforward.Becauseofitsfundamentalroleindetermining
investmentdecisionsunderlyingvaluegeneration,pro tability asopposedtoearnings servesas
anappropriatevaluationmetric.3Obviously,investmentgrowthundertakenbyapro table rm
enhancesinvestorvalue,whereasthatbyanunpro table rmcreatesnovalueorevendestroys
value.Ouranalysisdemonstrateshowthisbasicnotionaboutgrowth,pro tability,andvalue
creationmanifestsinmappingaccountingdatatovalue.
Wedevelopfourhypothesesconcerningvariousaspectsofthegrowtheffectonthevaluation
function.We rsttestthesehypothesesseparatelywithpartialmodelspeci cations whichcol-
lapsesoneofthedimensionsofthevaluationspace ,andthenjointlywith“full”modelspeci -
cations.Inanextendedanalysis,wefurtherfollowZhang 2000 ,whopredictsalinkbetweenthe
trendofpastinvestmentchangesandearningsbiases,tointroducetheeffectofconservative
accounting.There,weadoptamorecomprehensiveempiricalmodelwithinwhichwetestthe
effectsofbothconservatismandinvestmentgrowth.
Existingresearchshowsthat,givenequitybookvalue,equityvalueincreaseswithearnings,
andgrowthincreasestheslopeofthevalue-earningsrelation CollinsandKothari1989;Kothari
2001 .Wepredictthat,whereasgrowthstrengthensthevalue-earningsrelationintermsofa
steeperslopeforhigh-pro tability rms whoseinvestmentgrowthwillgenerallyhavepositive
NPV ,theeffectisexpectedtobesmallerandcanevendisappearforlow-pro tability rms
whosegrowthwillgenerallyhavelowornon-positiveNPV .4Ourempiricalresultsareconsis-
tent.We rstshowthatinregressionsofstockpriceonearningscontrollingforbookvalue,the
slopeispositiveandbecomesincreasinglysteeper,con rmingconvexityaspredictedbyrealG
1
2
3
4Thegrowthconstructinthisstudyisinput investment based.Thisisconceptuallydistinctfrom,thoughrelatedto, output-based earningsgrowth.Whetherinvestmentgrowthtranslatesintoearningsgrowthdependsona rm’sprof-itability.OhlsonandJuettner-Nauroth 2005 provideamodelthatrelatesequityvaluetoexpectedearningsandearningsgrowth.FamaandMiller 1972 provideanillustrationofthisbasicnotion.Bar-Yosefetal. 1987 empiricallyinvestigatetherelationbetweeninvestmentandearnings.Notethatearningscannotbecompareddirectlyacross rmswithdifferentscalesofoperations.Theimportanceofpro tabilityforvaluationmeansthatincomestatementdatashouldbeinterpretedinconjunctionwiththebalancesheet,consistentwiththeopinionoftheFinancialAccountingStandardsBoard seeSFACNo.5,paragraph24a .Therationaleisthata rm’sstrength/weaknessinbusinessfundamentalsshouldpersist tosomeextent fromoneperiod
tothenext,sothat rmswithhigherpro tabilitycurrentlyareexpectedtohavehigherpro tabilityinthefollowing
periods.EmpiricalevidencefromDechowetal. 1999 andBiddleetal. 2001 isconsistentwiththepremiseofour
argument.
TheAccountingReview
AmericanAccountingAssociationMarch2011
InvestmentGrowthandtheRelationbetweenEquityValue,Earnings,andEquityBookValue607
options BurgstahlerandDichev1997;Zhang2000 .Moreimportantly,whilegrowthincreases
theslopeofthevalue-earningsrelationinhigh-pro tabilityregions,ithaseitheraninsigni cantor
anegativeeffectontheslopeinlow-pro tabilityregions.
Accordingtopriorstudies BurgstahlerandDichev1997;Collinsetal.1999 ,equityvalueis
positivelyrelatedtoequitybookvaluegivenearnings,butlittleisknownabouthowgrowth
intervenesinthisrelation.Weexplainthat,whileapositiverelationshouldgenerallyholdabsent
growth,investmentgrowthwillreducetheslopeofthisrelationinhigh-pro tabilityregions
wheregrowthoptionsareimportant ;infact,thenegativeeffectofgrowthcanbesodominant
thatitcausesequityvaluetodecreasewithequitybookvalue.Thisnegativerelationinhigh-
pro tabilityregionscausedbygrowthoptionsiscontrarytoapredictedpositiverelationinlow-
pro tabilityregionscausedbyadaptationoptions BurgstahlerandDichev1997 .Together,the
twoforcesproduceanequityvaluefunctionthatchangesnonmonotonicallywithbookvalueover
awidepro tabilityrange.
Ourresultssupportthesepredictions.Controllingforearnings,we ndanegativecoef cient
onequitybookvalueintheregionsoflowbookvalue correspondingtohighpro tability ;
however,theslopeturnspositiveintheregionsofhighbookvalue lowpro tability .After
explicitlyrecognizingthegrowtheffectinregressions,we ndthatgrowthreducestheslope
coef cient i.e.,makesitmorenegative onbookvalueinhigh-pro tabilityregions,butincreases
theslope i.e.,makesitmorepositive inlow-pro tabilityregions.
However,theabove-describedbehaviordoesnotportrayafullviewoftherelationbetween
equityvalueandequitybookvalueincrosssections.Ifweholdpro tability insteadofearnings
constant,thentherelationchangessharply.Inthiscase,equityvalueincreasesuniformlywith
bookvalue,andgrowthincreasestheslopeofthisrelation.Theintuitionisthatamong rms
equallyef cientingeneratingvaluefrominvestedcapital,thosewithmorecapitalinvestedwill
havehighervalues;thisistrueespeciallyfor rmsexpectedtoundertakehighgrowth.
Whereastheaboveeffectsofinvestmentgrowthareinducedbyeconomicforcesforvalue
creation,Zhang 2000 explainsthatinvestmentactivitiescanalsoin uencethevalue-accounting
relationforaccountingreasons.Underconservativeaccountingpractices,thespeedofincreased
investmentinrecentyearswilldeterminethedegreeofconservatisminearnings.Consistentwith
thisprediction,we ndthattheearningscoef cientisgreaterinthehigh-versuslow-earnings
conservatismgroup fasterinvestmentincreasesintherecentpast .Atthesametime,we ndthat
thepredictedgrowtheffectholdsinbothhigh-andlow-earnings-conservatismgroups,con rming
thattheeconomic-driveneffectofinvestmentgrowthisdistinctfromtheconservatism-driven
effectofpastinvestments.
Ourstudyextendstheempiricalvaluationliteraturebyshowinghowthenonlinearrelation
betweenequityvalue,earnings,andequitybookvalueisdependentoninvestmentgrowth.Pre-
viousresearchhasreliedheavilyonlinearvaluationrelations,5motivatedbyeitherheuristic
argumentsorthemodelsofOhlson 1995 andFelthamandOhlson 1995 ,assuminglinear
informationdynamics.However,empiricalevidencegenerallydoesnotsupporttheselinearmod-
els Dechowetal.1999;CallenandSegal2005 .Somecriticizethesemodelsasnondescriptive
becausetheydonotcapturepositiveeconomicrentsorgrowthoptions LoandLys2000;Biddle
etal.2001;HolthausenandWatts2001 .BurgstahlerandDichev 1997 explicitlyexaminenon-
linearityinvaluation,buttheyfocusontheroleofadaptationoptions relevanttounpro table
rms ,notthatofgrowthoptions relevantmainlytopro table rms .
5ExamplesincludeLandsman 1986 ,Barth 1991 ,andShevlin 1991 ,whousebalancesheetdata,Barthetal. 1992 ,
whouseincomestatementdata,andCollinsetal. 1999 ,LevandZarowin 1999 ,andCoreetal. 2003 ,whousea
linearcombinationofearningsandequitybookvalue.SeeHolthausenandWatts 2001 forasurvey.
TheAccountingReviewMarch2011
AmericanAccountingAssociation
608Hao,Jin,andZhang
OurstudyanswersthecallbyHolthausenandWatts 2001 formorevaluationresearchthat
incorporatesrentsandgrowthoptions.Althoughseveralstudieshavedemonstratedtheimportant
roleofgrowthoptions,theirfocusesdifferfromours.Zhang 2000 buildsgrowthoptionsintoa
theoreticalmodel,butdoesnotconductacorrespondingempiricalexamination.Biddleetal.
2001 explorethenonlineardynamicbehaviorofresidualincomeunderthenotionof“capitalfollowingpro tability” thekeyassumptiongivingrisetorealoptions ,butdonotexaminethe
behaviorofequityvalue.Finally,ChenandZhang 2007 testareturnmodelderivedfromthe
valuemodelofZhang 2000 .Butdeterminingequityreturnoveratimeperiodisadistinctly
differentproblemfromdeterminingequityvalueatagivenpointintime.Returnsderivefrom
changesinvalue butonecannotdeterminea rm’svaluefromobservedreturns ,sothevaluation
questionexaminedinourstudyismorebasicthanthatinChenandZhang 2007 .Importantly,
unlikeChenandZhang 2007 ,whousethegrowthvariableasaseparateexplanatoryfactor—
alongwiththeiraccountingvariables—inthereturnmodel,ourstudyexploreshowthevaluation
impact theslopecoef cients ofaccountingvariablesisdependentongrowth,thusemphasizing
theinteractiveeffectsofgrowthandaccountingvariablesinvaluation.
Inadditiontoexaminingtheroleofprospectiveinvestment growthoptions ,thisstudy
contributestotheliteraturebyshowinghowpastinvestmentactivitiesaffectthevalue-accounting
relationasaresultofconservativeaccountingpractices.Finally,beyondtestingthehypothesesof
thisstudy,theempiricalmodelsweestimatealsocon rmresultsestablishedfrompreviousstudies
concerning,forexample,convexity BurgstahlerandDichev1997 ,andtherelativeimportanceof
earningsversusequitybookvalueforpositiveandnegativeearnings rms similartoourhigh-
andlow-pro tability rms;Collinsetal.1999 .Ourstudythushelpstounifyvariousempirical
ndingswithinacommonframework.
InSectionII,wedevelopthehypotheses.SectionIIIdescribesthesample.SectionIVuses
partialmodelspeci cationstotestthehypotheses,whileSectionVusesfullmodelspeci cations.
SectionVIteststheimplicationsofconservativeaccounting.Finally,wedescribeourrobustness
checksinSectionVIIandconcludeinSectionVIII.Themathematicalderivationsofthehypoth-
esesareintheAppendix.
II.THEORETICALFOUNDATIONANDHYPOTHESES
Inthissection,we rstuseasimpli edversionofZhang’s 2000 model,whichassumes
unbiasedaccountingdepreciation,todevelopfourhypothesesonthevaluationeffectofinvest-
mentgrowth;thesehypothesesallarisefromeconomicincentivesforvaluegeneration.Wethen
considerthegeneralversionofZhang’smodeltodevelopour fthhypothesis,whicharisesfrom
accountingconservatism asrepresentedbyaconservativedepreciationpolicyinZhang 2000 .
ASimpli edVersionofZhang’s(2000)Model
LetVbethe current equityvalueofanall-equity- nanced rm,Bthecorrespondingequity
bookvalue,Xthecurrent-periodearnings,gtheextenttowhichthescaleofoperationsmaygrow
inthefuture,andktheearningscapitalizationfactor.6De neq X/Basthe rm’s current-
period pro tability.Then,followingZhang 2000 andassumingunbiasedaccountingdeprecia-
tion,equityvaluecanbeexpressedas:
V=B P q +kq+gC q =BP q +kX+gBC q 1
whereP . isthe put optiontoabandonoperations,andC . isthe call optiontogrow,both
6Sincewearefocusingontheroleofcontemporaneousaccountingdata,wesuppressthetimesubscriptsonvariablesfor
simplicity.
TheAccountingReview
AmericanAccountingAssociationMarch2011
InvestmentGrowthandtheRelationbetweenEquityValue,Earnings,andEquityBookValue609
normalizedbythescalemeasure,B.Thedecisionstoexercisetherealoptionsaredependenton
pro tability,makingtheoptionsfunctionsofq.PanelsAandBofFigure1providegeometric
viewsofmodel 1 inthespacede nedbyaxesq,B,andV,fortwodifferentvaluesofg.The
valuationfunctionisrepresentedasacurvedsurfacethatmaps q,B combinationsintoVs.7
GrowthandtheRelationbetweenEquityValueandEarnings,GivenBookValue
Wenowemploymodel 1 toexplorehowequityvaluechangeswithearningsatagiven
equitybookvalue.ThebasicV-XrelationisdepictedinFigure1,PanelA.AtagivenB,moving
alongtheq-axis,wetraceoutVasanincreasingandconvexfunctionofX seePredictions1and
2ofZhang 2000,283 ,asrepresentedbycurveab.Intheextremelylow possiblynegative q
region,theslopeintheV-Xrelationisclosetozero.Thereasonisthatwhenoperationsareso
unpro tablethattheyarelikelytobediscontinued,equityvaluedependsprimarilyonbookvalue
proxyingfortheexitoradaptationvalue ,withearningsbeingoflittleuseinpredictingvaluegeneration.AsXincreases andhenceqincreases,givenB ,theprobabilitiesalsoincreasethatthe
rmwillstayinbusinessanditsoperationswillgrow.Thisraisesexpectationsaboutfuture
earnings,thusincreasingtheslopeintheV-Xrelation.
Inmodel 1 ,growthparametergmagni esthevalueofthegrowthoption.Inhigh-qregions
wheretheoptionisinthemoney,theslopeoftheV-Xrelationwillincreasewithgrowth,as
illustratedinPanelsAandBofFigure1fortwodifferentvaluesofg.Movingtothelower-q
FIGURE1
GeometricalViewsofValuationModel(1)
PanelA:Lowg
内容需要下载文档才能查看 内容需要下载文档才能查看This gurepresentsgeometricalviewsofequityvalue(V)asafunctionofpro tability(q)andbookvalue(B)
basedonmodel(1)forlowgrowth(PanelA)andhighgrowth(PanelB).AtagivenB,Visanincreasingfunction
ofq,asindicatedbycurveabinPanelA,andtheslopeincreaseswithq.Atagivenq,Visanincreasingfunction
ofB,asindicatedbylinecdinPanelA.
7AxesBandqareorthogonalbecausetheirinformationcontentsarecomplementaryinnature.Notethatearningsare
dependentonscale,andthuswouldbecorrelatedwithbookvalue.
TheAccountingReviewMarch2011
AmericanAccountingAssociation
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