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PartVII
TheManagementofFinancialInstitutions
Chapter24
RiskManagementinFinancialInstitutions
ManagingCreditRisk
ScreeningandMonitoring
Long-TermCustomerRelationships
LoanCommitments
Collateral
CompensatingBalances
CreditRationing
ManagingInterest-RateRisk
IncomeGapAnalysis
DurationGapAnalysis
ExampleofaNonbankingFinancialInstitution
SomeProblemswithIncomeandDurationGapAnalysis
ThePracticingManager:StrategiesforManagingInterest-RateRisk
Riskmanagementhasbecomeamajorconcernformanagersoffinancialinstitutionsinrecentyears.Thischapterprovidesanintroductiontothissubjectwhichisusefulforbusinessstudentswhowillnottakejobsinthefinancialinstitutionsindustry,butwhichwillalsoprovideasolidgroundingforstudentswhowillgoontopursuemoreadvancedcoursesinriskmanagementinfinancialinstitutions.
Thesectiononmanagingcreditriskisanexcellentapplicationofthebasicconceptsofadverseselectionandmoralhazardtoexplainmanagerialpracticesinthefinancialinstitutionsindustry.
Thesectiononmanaginginterestrateriskintroducesstudentstohowinterest-rateriskismeasuredandthenusesaPracticingManagerapplicationtooutlinestrategiesforhowtomanageinterest-raterisk.IfdurationGAPanalysisiscovered,thenitisnecessarythatthePracticingManagerapplicationinChapter3ondurationbecoveredearlierinthecourse.
Thischapterisreallyonebigapplicationofconceptsintroducedearlierinthecourse.Notonlydoesithelpsolidifystudents’understandingoftheseconcepts,butitshowshowtheseconceptsareusefulforsolvingmanagerialproblemsthatbusinessstudentsarelikelytoencounterintherealworld.
Chapter24RiskManagementinFinancialInstitutions137
1.Yes.Bywarningborrowersthattheywillnotbeabletogetfutureloansiftheyengageinriskyactivities,borrowerswillbelesslikelytoengageintheseactivitiesinordertohaveaccesstoloansinthefuture.
2.Securedloansareanimportantmethodoflendingforfinancialinstitutionsbecauseiftheborrowerdefaults,thefinancialinstitutioncantaketitletothecollateral,sellitoff,andusetheproceedstooffsetanylossesontheloan.Thusthefinancialinstitutioncanworrylessabouttheadverseselectionproblembecauseithassomeprotectioneveniftheborrowerwasabadcreditrisk.
3.Uncertain.Insomecases,raisingratesmaygeneratemoreincomeandthusincreaseprofits.However,thehigherinterestratesdoincreaseadverseselectioninwhichtherisk-proneborrowersaremorelikelytoseekouttheloans.Thustherateofdefaultmightgoupandbankprofitscouldsuffer.
4.Toreduceadverseselection,abankerneedstoscreenoutbadcreditrisksbylearningasmuchaspossibleaboutpotentialborrowers.Similarly,tominimizemoralhazard,thebankermustcontinuallymonitorborrowerstoseethattheyarecomplyingwithrestrictiveloancovenants.Henceitpaysforthebankertobynosy.
5.Compensatingbalancescanactascollateral.Theyalsohelpestablishlong-termcustomerrelationships,whichmakeiteasierforthebanktocollectinformationaboutprospectiveborrowers,thusreducingtheadverseselectionproblem.Compensatingbalanceshelpthebankmonitortheactivitiesofaborrowingfirm,sothatitcanpreventthefirmfromtakingontoomuchrisk,therebynotactingintheinterestofthebank.
6.False.Althoughdiversificationisadesirablestrategyforabank,itmaystillmakesenseforabanktospecializeincertaintypesoflending.Forexample,abankmayhavedevelopedexpertiseinscreeningandmonitoringaparticularkindofloan,therebyimprovingitsabilitytohandleproblemsofadverseselectionandmoralhazard.
1.Abankissuesa$100,000variable-rate,30-yearmortgagewithanominalannualrateof4.5%.Iftherequiredratedropsto4.0%afterthefirstsixmonths,whatistheimpactontheinterestincomeforthefirst12months?
Solution:At4.5%,therequiredpaymentiscalculatedas:
PV=100,000,I=4.5/12,N=360,FV=0
ComputePMT.PMT=506.685
Ifrateremainat4.5%,themortgagebalanceafter12monthsis:
PMT=506.685,N=348,I=4.5/12,FV=0
ComputePV.PV=98,386.71,or$1,613.29ofthepaymentswenttowardprincipal.
Thetotalpayments=506.68512=$6,080.22.
Interestincomefortheyearis$6080.22$1613.29=$4,466.93
Ifratesdropto4%forthelast6monthsoftheyear:
First,calculatetheinterestforthefirstsixmonths:
PMT=506.685,N=354,I=4.5/12,FV=0
ComputePV.PV=99,202.38,or$797.62ofthepaymentswenttowardprincipal.
138Mishkin/Eakins•FinancialMarketsandInstitutions,SixthEdition
Thetotalpayments=506.6856=$3,040.11.
Interestincomefortheyearis$3040.11一$797.62=$2,242.49ofinterestincome.Next,calculatetheinterestforthelastsixmonths:
At4.0%,therequiredpaymentiscalculatedas:
PV=99,202.38,I=4.0/12,N=354,FV=0
ComputePMT.PMT=477.772
PMT=477.772,N=348,I=4.0/12,FV=0
ComputePV.PV=98,312.41,or$889.97ofthepaymentswenttowardprincipal.Thetotalpayments=477.7726=$2,866.63.
Interestincomefortheyearis$2866.63一$889.97=$1,976.66ofinterestincome.Totalinterestincome=$2,242.49+$1,976.66=$4,219.15
Interestincomehasfallenby$247.78,or5.5%,belowwhatitwouldhavebeenhadtheinterestratenotfallen.
2.Abankissuesa$100,000fixed-rate,30-yearmortgagewithanominalannualrateof4.5%.Iftherequiredratedropsto4.0%immediatelyafterthemortgageisissued,whatistheimpactonthevalueofthemortgage?
Solution:At4.5%,therequiredpaymentiscalculatedas:
PV=100,000,I=4.5/12,N=360,FV=0
ComputePMT.PMT=506.685
Ina4.0%market,thevalueofthemortgageis:
PMT=506.685,I=4.0/12,N=360,FV=0
ComputePV.PV=106,131.
Thevalueofthemortgagehasincreasedby$6,131,or6.131%.
3.Calculatethedurationofa$100,000fixed-rate,30-yearmortgagewithanominalannualrateof7.0%.Whatistheexpectedpercentagechangeinvalueiftherequiredratedropsto6.5%immediatelyafterthemortgageisissued?
Solution:Thedurationcalculationshouldbecompletedusingaspreadsheet.Althoughthetechnique
isthesame,thereare360monthstohandle.Doingthis,thedurationcanbecalculatedas10.15years.
Pi
=一Duration=一10.15一0.005/1.07=4.74%P1+i
4.Thevalueofa$100,000fixed-rate,30-yearmortgagefallsto$89,537wheninterestratesmovefrom5%to6%.Whatistheapproximatedurationofthemortgage?
Solution:
Pi1+iP
=一Duration,orDuration=一
P1+iiP
Duration=一=10.98years0.01100,000
1.05一10,463
Chapter24RiskManagementinFinancialInstitutions139
5.Calculatethedurationofacommercialloan.Thefacevalueoftheloanis$2,000,000.Itrequiressimpleinterestyearly,withanAPRof8%.Theloanisdueinfouryears.Thecurrentmarketrateforsuchloansis8%.
Solution:Theannualinterestis0.082,000,000=160,000
01234
2,000,000
160,000
148,148
160,000
137,174
160,000
127,013
2,160,000
1,587,664
0.137174
0.074074
3.577097
3.175329
0.19052
Thisloanhasadurationof3.57years.
6.Abank’sbalancesheetcontainsinterest-sensitiveassetsof$280millionandinterest-sensitiveliabilitiesof$465million.Calculatetheincomegap.
Solution:GAP=$280$465=$185million
Anotherwaytostatethisisthebankhasaliability-sensitivegapof$185million.
7.Calculatetheincomegapforafinancialinstitutionwithrate-sensitiveassetsof$20millionandrate-sensitiveliabilitiesof$48million.Ifinterestratesrisefrom4%to4.8%,whatistheexpectedchangeinincome?
Solution:GAP=RSARSL
=$20million$48million
=$28million
I=APi
=$28million0.008
=$224,000million
8.Calculatetheincomegapgiventhefollowingitems:
•$8millioninreserves
•$25millioninvariable-ratemortgages
•$4millionincheckabledeposits
•$2millioninsavingsdeposits
•$6millionof2yearCD’s
Solution:GAP=RSARSL
RSA=$25million
RSL=$4million+$2million=$6million
GAP=$25million$6million
GAP=$19million
140Mishkin/Eakins•FinancialMarketsandInstitutions,SixthEdition
9.Thefollowingfinancialstatementisforthecurrentyear.Fromthepast,youknowthat10%offixed-ratemortgagesprepayeachyear.Youalsoestimatethat10%ofcheckabledepositsand20%ofsavingsaccountsareratesensitive.
SecondNationalBank
Assets
Liabilities
Reserves
$
1,500,000
CheckableDeposits
$15,000,000
Securities
MoneyMarketDeposits
$5,500,000
1Year
$
6,000,000
SavingsAccounts
$8,000,000
1to2Years
$
8,000,000
CDs
>2years
$
12,000,000
Variables-rate
$15,000,000
ResidentialMortgages
1Year
$22,000,000
Variables-rate
$
7,000,000
1to2Years
$5,000,000
Fixed-rate
$
13,000,000
>2years
$2,500,000
CommercialLoans
Fedfunds
$5,000,000
1Year
$
1,500,000
Borrowings
1to2Years
$
18,500,000
1Year
$12,000,000
>2years
$
30,000,000
1to2Years
$3,000,000
Buildings,etc.
$
2,500,000
>2years
BankCapital
$2,000,000$5,000,000
Total
$
100,000,000
Total
$100,000,000
WhatisthecurrentIncomeGAPforSecondNationalBank?Whatwillhappentothebank’scurrentnetinterestincomeifratesfallby75basispoints?
Solution:RSA=6M+7M+(0.1013M)+1.5M=$15.8million
RSL=(0.1015M)+5.5M+(0.208M)+15M+22M+5M+12M=$62.6millionGAP=$15.8million$62.6million
GAP=$46.8million
I=46.8million(0.0075)
=$+351,000
10.ChicagoAvenueBankhasthefollowingassets:
Asset
Value
Duration(inyears)
T-Bills
$100,000,000
0.55
ConsumerLoans
$40,000,000
2.35
CommercialLoans
$15,000,000
5.90
WhatisChicagoAvenueBank’sassetportfolioduration?
Solution:Totalassets=155M
Assetduration=0.55(100/155)+2.35(40/155)+5.90(15/155)=1.53years
Chapter24RiskManagementinFinancialInstitutions141
11.Abankaddedabondtoitsretainedportfolio.Thebondhasadurationof12.3yearsandcost$1,109.Justafterbuyingthebond,thebankdiscoveredthatmarketinterestratesareexpectedtorisefrom8%to8.75%.Whatistheexpectedchangeinthebond’svalue?
Solution:
编编
=-Duration根1+
编=-12.3根根$1,109=-$94.73
12.Calculatethechangeinthemarketvalueofassetsandliabilitieswhentheaveragedurationofassetsis3.60,theaveragedurationofliabilities0.88,andinterestratesincreasefrom5%to5.5%.
Solution:Assets:
%编A=-3.60根(0.005/1.05)=-1.71%
Liabilities:
%编L=-0.88根(0.005/1.05)=-0.42%
13.SpringerCountyBankassetstotaling$180millionwithadurationof5years,andliabilitiestotaling$160millionwithadurationof2years.Ifinterestratesdropfrom9%by75basispoints,whatisthechangeinbank’scapitalizationratio?
Solution:Priortotheratechange,thecapitalizationratio=20/180=11.11%
Thedurationgap=5-(160/180)根2=3.22
Changeinequity=-3.22根(-0.0075/1.09)根$180million=3.988millionChangeinassets=-5根(-0.0075/1.09)根$180million=6.192millionNewcapratio=(20+3.988)/(180+6.192)=12.88%
14.ThemanagerforTylerBankandTrusthasthefollowingassetstomanage:
Asset
Value
Duration(inyears)
Liability
Value
Duration(inyears)
Bonds
115,000,000
9.00
DemandDeposits
690,000,000
1.00
ConsumerLoans
Commercial
345,000,000
2.00
SavingAccounts
??
0.50
Loans
575,000,000
5.00
Ifthemanagerwantsadurationgapof3.00,whatlevelofSavingAccountsshouldthebankraise?Assumethatanydifferencebetweenassetsandliabilitiesisheldascash(duration=0).
Solution:
DURa=(9.00根115/1035)+(2.00根345/1035)+(5.00根575/1035)=4.44AssumethattheSavingAccountvalue=Y.
DURl=[1.00根690/(690+Y)]+[0.50根Y/(690+Y)]
()
DURgap=DURa-|(根DURl)|
3.00=4.44-[(690+Y)/1035]根[1.00根690/(690+Y)+0.50根Y/(690+Y)]
142Mishkin/Eakins•FinancialMarketsandInstitutions,SixthEdition
Y=1,600,000,000
Solution:
DURa=(9.00〉75/1650)+(2.00〉875/1650)+(5.00〉700/1650)=3.59
AssumethattheSavingAccountsvalue=Y.
DURl=[1.00〉300/(300+Y)]+[0.50〉Y/(300+Y)]
DURgap=DURa-(L/A〉DUR)l
3.00=3.59-[(300+Y)/1650]〉[1.00〉300/(300+Y)+0.50〉Y/(300+Y)]Y=1347
15.Thefollowingfinancialstatementisforthecurrentyear.
SecondNationalBank
AssetsDurationLiabilitiesDuration
Reserves
5,000,000
0.00
CheckableDeposits
15,000,000
2.00
Securities
MoneyMarketDeposits
5,000,000
0.10
<1Year
5,000,000
0.40
SavingsAccounts
15,000,000
1.00
1to2Years
5,000,000
1.60
CDs
>2years
10,000,000
7.00
Variables-rate
10,000,000
0.50
ResidentialMortgages
<1Year
15,000,000
0.20
Variables-rate
10,000,000
0.50
1to2Years
5,000,000
1.20
Fixed-rate
10,000,000
6.00
>2years
5,000,000
2.70
CommercialLoans
InterbankLoans
5,000,000
0.00
<1Year
15,000,000
0.70
Borrowings
1to2Years
10,000,000
1.40
<1Year
10,000,000
0.30
>2years
25,000,000
4.00
1to2Years
5,000,000
1.30
Buildings,etc.
5,000,000
0.00
>2years
5,000,000
3.10
BankCapital
5,000,000
Total
100,000,000
Total
$100,000,000
Calculatethedurationgapforthebank.
Solution:
DURa=(0.40〉0.05)+(1.60〉0.05)+(7.00〉0.10)+(0.50〉0.10)
+(6.00〉0.10)+(0.70〉0.15)+(1.40〉0.10)+(4.00〉0.25)
DUR=2.695
a
Bythesametechnique,usingtotalliabilitiesof95,000,000,
DUR=1.03
l
(L)
gapa(Al)
DUR=DUR-|〉DUR|=2.695-(95/100〉1.03)=1.7165
Chapter24RiskManagementinFinancialInstitutions143
16.Ratesensitiveassetsincreaseby$10million,sotheGAPrisesby$10millionto一$7.5million.Ifinterestratesfallby3percentagepoints,profitsrisenextyearbyI=GAPi=一$7.5(一0.03)=0.225million=$225,000.
144Mishkin/Eakins•FinancialMarketsandInstitutions,SixthEdition
17.Rate-sensitiveassetsincreaseby$4million,soGAPgoesfrom一$17.5millionto一$13.5million.(Ofthe$5millionoffixed-ratemortgages,$1millionisrate-sensitivebecause20%arerepaidwithinayear,soconvertingthe$5millionoffixed-ratemortgagesintovariable-ratemortgagesproducesanetincreaseofrate-sensitiveassetsof$4million.)BecauseGAPfallsinabsolutevalue,theeffectofchangesininterestratesonitsprofitsandhenceonitsinterest-rateriskissmaller.
18.Shereducesherestimateofrate-sensitiveassetsby$1million(10%of$10million)sotheGAPgoesfrom一$17.5millionto一$18.5million.Ifinterestratesfallby2percentagepoints,profitsnextyearrisebyI=GAPi=一$18.5(一0.02)=+$0.37million=$370,000.
19.Themanagerraisestheestimateofrate-sensitiveliabilitiesby$2.25millionsothatGAPgoesfrom一$17.5millionto一$19.75million.BecauseGAPrisesinabsolutevalue,theeffectofchangesininterestratesonitsprofitsandhenceitsinterest-rateriskislarger.Ifinterestratesriseby5percentagepoints,profitsnextyearchangebyI=GAPi=一$19.75million0.05=一$0.9875million.
20.Thepercentagechangeinnetworthasapercentageofassetsis%NW=一DURGAPi/(1+i)=一1.720.10/(1+0.10)=一0.156=一15.6%.With$100millionofassetsthismeansnetworthdeclinesby$15.6million,from$5millionto一$10.6million.Sincethebanknowhasnegativenetworth,itisinsolventandwillgooutofbusiness.
21.ThedurationgapisnowDURgap=DURA一(L/ADUR)=4L一(95/1002)=2.1years.Thechangeinnetworthasapercentageofassetsis%NW=一DURGAPi/(1+i)=一2.10.02/(1+0.10)=一0.038=一3.8%.With$100millionofassets,networthdeclinesby$3.8million,from$5millionto$1.2million.
22.Itshouldsolvethefollowingequation:0=DURA一[95/1002].Thisyield
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