aswath damodaranpeople.stern.nyu.edu/adamodar/pdfiles/blog/dataupdate3.pdf · 2017. 1. 20. · 7...
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DATA2017UPDATE3:CRACKINGTHECURRENCYCODE
AswathDamodaran
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Backtothebeginning:Theintrinsicvalueequation
• Inintrinsicvaluation,thevalueofanassetisthepresentvalueofitsexpectedcashflows,discountedbackatariskadjustedrate.
• Therewasatimeinthenotsodistantpast,whereanalystscoulddotheiranalysisintheirlocalcurrenciesandcarelittleornotatallaboutforeigncurrencies,howtheymovedandwhy.
• ThiswasparticularlytrueforUSanalystsinthelasthalfofthelastcentury,wheretheUSdollarwastheunchallengedglobalcurrencyandtheUSeconomybestrodetheworld.
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TheCurrencyEffect(ornon-effect)
¨ Inintrinsicvaluation,currencychoicesaffectboththecashflowsandthediscountratesthatyouuseinvaluation:
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TwoSimpleCurrencyPropositions
• Thefirstisthatcurrencyisameasurementmechanismandthatyoushouldbeabletovalueanycompanyinanycurrency,sinceallitwillrequireis restatingcashflows,growthratesanddiscountratesinthatcurrency.
• ThesecondisthatinarobustDCFvaluation, yourvalueshouldbecurrencyinvariant.Putdifferently,thevalueofPetrobrasshouldbeunchanged,whetheryouvaluethecompanyinnominalBrazilianReais ($R),USdollarsorEuros.
¨
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CurrencyEstimationQuestions
1. ExchangeRateForecasts:Tobeabletovaluecompaniesthatoperateindifferentcurrencies,youhavetobeabletoforecastexchangeratesforlongperiodsforward.
2. DiscountRates:Tobeabletoswitchfromvaluingcompaniesinonecurrencytoanother,youhavetobeabletoestimatediscountratesforacompanyinanycurrency.
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ExchangeRateForecastingforValueInvariance
¨ Ifyouwanttomakeyourvaluationscurrencyinvariant,andinflationiswhatsetscurrenciesapart,thewaytoestimateexpectedfutureexchangeratesistoassumepurchasingpowerparity:
¨ Evenifyouhavestrongcurrencyviews,itisbesttokeepthemoutofyourcompanyvaluations,sinceyourvaluationconclusionswillthenbejointeffectsofyourcompanyandcurrencyviews.
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DiscountRates:Twowaysofestimatingcurrency-specificdiscountrates
Aswath Damodaran
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¨ Groundup:Inthisapproach,youstartbyestimatingtheriskfreerateinthelocalcurrencyandthenbuilduptothecostofequityandcapital,usingwhateverbuildupmechanism(betas,riskpremiums)thatyouuseinanyothercurrency.
¨ DifferentialInflation:Inthisapproach,youestimateyourcostofequityorcapitalinthecurrencythatyoufeelmostcomfortableworkinginandthenusedifferentialinflationtoconvertitintoadifferentcurrency.
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RiskFreeRate1:GovernmentBondRates
-5.00%
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
SwissFranc
Japane
seYen
Euro
DanishKrone
CzechKo
runa
Swed
ishKrona
Taiwanese$
BritishPou
ndNorwegianKron
eHK
$Canadian$
BulgarianLev
IsraeliShekel
KoreanW
onSingapore$
US$
ThaiBaht
Australian$
Croatia
nKu
naCh
ineseYuan
NZ$
HungarianForin
tRo
manianLeu
PolishZloty
ChileanPeso
Malyasia
nRinggit
PhillipinePe
soIcelandKron
aVietnameseDo
ngIndianRup
eePe
ruvianSol
ColombianPeso
Indo
nesia
nRu
piah
MexicanPeso
PakistaniRup
eeRu
ssianRu
ble
SouthAfricanRand
Turkish
Lira
BrazilianReai
KenyanShilling
NigerianNaira
Vene
zuelanBolivar
Ten-yearGovernmentBondRatesbyCurrency- January1,2017
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RiskfreeRate2:GovernmentBondrate,netofdefaultspread
-5.00%
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
Japane
seYen
Croatia
nKu
naCzechKo
runa
SwissFranc
BulgarianLev
Euro
DanishKrone
Taiwanese$
PakistaniRup
eeSw
edish
Krona
ThaiBaht
HungarianForin
tBritishPou
ndRo
manianLeu
VietnameseDo
ngHK
$IsraeliShekel
KoreanW
onNorwegianKron
eCanadian$
Singapore$
US$
ChineseYuan
PhillipinePe
soPo
lishZloty
Australian$
Malyasia
nRinggit
NZ$
ChileanPeso
IcelandKron
aIndianRup
eeCo
lombianPeso
PeruvianSol
Indo
nesia
nRu
piah
RussianRu
ble
MexicanPeso
SouthAfricanRand
BrazilianReai
Turkish
Lira
KenyanShilling
Vene
zuelanBolivar
NigerianNaira
Ten-yearGovernmentBondRates,netofDefaultspread(basedonsovereignrating)
RiskfreeRate DefaultSpreadbasedonrating
Green:Defaultspreadforcountry(basedonrating)Red:GovernmentBondrate– DefaultSpread
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Riskfree Rate3:DifferentialInflation
¨ Youstartwithariskfreerateinacurrencywhereyoubelievethatthegovernmentbondrateisareliablemeasureoftheriskfreerate(andthenaddtothisnumberthedifferentialinflationratebetweentheUSdollarandthelocalcurrency.¤ LocalCurrencyRiskfreeRate=US$RiskfreeRate+(Expected
inflationinlocalcurrency– ExpectedinflationinUS$)
¨ Thisisanapproximationthatworksreasonablywellwhenlocalcurrencyinflationislow(closetotheUSdollarinflationrate)butthemorepreciseversionofthisformulation:
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Riskfree Rate4:SyntheticRiskFreeRate
¨ Start with the Fisher equation¤ RiskfreeRate=ExpectedRealInterestRate+Expectedinflationrate
¨ Youcanaugmentthisequationwiththeassumptionthatlongtermrealgrowthinaneconomywillconvergeonthelongtermrealinterestrate.¤ ExpectedRealInterestRate=ExpectedRealGrowthRate¤ SyntheticRiskfreeRate=ExpectedRealGrowthRate +Expectedinflationrate
¨ IfyouareabletoestimateexpectedinflationandrealGDPgrowthforthelongtermforaneconomy,theriskfreerateforthecurrencyofthateconomywillbethesumofthetwo.
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CostofCapital+InflationDifferential
¨ Ifyoustartwitha riskfreerateinalocalcurrencyandbuilduptoacostofcapitalusingequityriskpremiumsanddefaultspreads,oftenavailableonlyindollar-basedmarkets,youareeffectivelyassumingthatriskpremiumsareabsolutenumbersthatdon'tchangeastheriskfreeratechanges.
¨ Ifyouwanttoscalethemallup,hereisthesimplesolution: