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时间:2018-02-10
《paul wilmott on quantitative finance swaps》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、CHAPTER14swapsInthisChapter...•thespecificationsofbasicinterestrateswapcontracts•therelationshipbetweenswapsandzero-couponbonds•exoticswaps14.1INTRODUCTIONAswapisanagreementbetweentwopartiestoexchange,orswap,futurecashflows.Thesizeofthesecashflowsisdeterminedbysomeformulae,decideduponatthein
2、itiationofthecontract.Theswapsmaybeinasinglecurrencyorinvolvetheexchangeofcashflowsindifferentcurrencies.Theswapsmarketisbig.Thetotalnotionalprincipalamountis,inUSdollars,currentlycomfortablyin14figures.Thismarketreallybeganin1981althoughtherewereasmallnumberofswap-likestructuresarrangedint
3、he1970s.Initiallythemostpopularcontractswerecurrencyswaps,discussedbelow,butveryquicklytheywereovertakenbytheinterestrateswap.14.2THEVANILLAINTERESTRATESWAPIntheinterestrateswapthetwopartiesexchangecashflowsthatarerepresentedbytheinterestonanotionalprincipal.Typ-ically,onesideagreestopayth
4、eotherafixedinterestrateandthecashflowintheoppositedirectionisafloatingrate.ThepartiestoaswapareshownschematicallyinFigure14.1.OneofthecommonestfloatingratesusedinaswapagreementisLIBOR,LondonInterbankOfferRate.Commonlyinaswap,theexchangeofthefixedandfloatinginterestpaymentsoccureverysixmonths.I
5、nthiscasetherelevantLIBORratewouldbethesix-monthrate.Atthematurityofthecontracttheprincipalisnotexchanged.Letmegiveanexampleofhowsuchacontractworks.252PartOnemathematicalandfinancialfoundationsfixedrateApaysBpaysfixedandfloatingandreceivesreceivesfloatingfixedLIBORFigure14.1Thepartiestoani
6、nterestrateswap.ExampleSupposethatweenterintoafive-yearswapon4thAugust2006,withsemi-annualinterestpayments.Wewillpaytotheotherpartyarateofinterestfixedat6%onanotionalprincipalof$100million;thecounterpartywillpayussix-monthLIBOR.ThecashflowsinthiscontractareshowninFigure14.2.Thestraightlinesd
7、enoteafixedrateofinterestandthusaknownamount;thecurlylinesarefloatingratepayments.Thefirstexchangeofpaymentsismadeon4thFebruary2007,sixmonthsafterthedealissigned.Howmuchmoneychangeshandsonthatfirstdate?Wemustpay0.03×$100,000,000=$3,000,000.Thecashflowintheoppositedirecti
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