CDSOption





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CapeTools Credit Default Swaps function list

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Computes the premium and any of the first or second order derivatives of an European option on a credit default leg spread.



Note: Within Excel, the function is named - CT.CDS.Option




High level graphic of CDSOption() function with parameters. Blue square node is the actual function with the parameters ordered.



Parameter Description


  1. CDSObject parameter

    Key to an already constructed Credit Default Swap object.
  2. PayPremium parameter

    Right to pay the premium rate?
  3. Volatility parameter

    Volatility of the option
  4. Strike parameter

    This would be the premium coupon rate.
  5. SettleDays parameter

    The number of days it takes to settle the option. The exercise date of the option will be computed from the start date of the Credit default swap minus the number of days it takes to settle.
  6. dayCounter parameter

    DayCounter to use for the computation of year fractions.
  7. Cal parameter

    Calendar required for the correct identification of the option exercise date.
  8. BusDayConv parameter

    Business day convention for the correct identification of the option exercise date.
  9. Greek parameter

    The greek of interest.


Extended information

Function Syntax

VB Syntax


Double CTCreditDefaultSwaps.CDSOption( _
String CDSObject, _
Boolean PayPremium, _
Double Volatility, _
Double Strike, _
Long SettleDays, _
DayCountEnum dayCounter, _
String Cal, _
BDCEnum BusDayConv, _
String Greek)


Excel Spreadsheet Syntax


=CT.CDS.Option(
Excel String Cell CDSObject,
Excel Boolean Value Cell PayPremium,
Excel Numeric Cell Volatility,
Excel Numeric Cell Strike,
Excel Numeric Cell SettleDays,
Excel String Cell dayCounter,
Excel String Cell Cal,
Excel String Cell BusDayConv,
Excel String Cell Greek)


C++ Syntax


static double CDSOption(
std::string CDSObject,
bool PayPremium,
double Volatility,
double Strike,
long SettleDays,
DayCountEnum dayCounter,
std::string Cal,
BDCEnum BusDayConv,
std::string Greek);


DotNET Syntax


System.Double CTCreditDefaultSwapsSA.CDSOption(
System.String CDSObject,
System.Boolean PayPremium,
System.Double Volatility,
System.Double Strike,
System.Int32 SettleDays,
CTIEnums.DayCountEnum dayCounter,
System.String Cal,
CTIEnums.BDCEnum BusDayConv,
System.String Greek);

Parameter data types

ArgNameArgTypeIsKey
CDSObjectStringTRUE
PayPremiumBooleanFALSE
VolatilityDoubleFALSE
StrikeDoubleFALSE
SettleDaysLongFALSE
dayCounterDayCountEnumFALSE
CalStringTRUE
BusDayConvBDCEnumFALSE
GreekStringFALSE


Example Inputs

The first column represents the name of the parameters. The second column specifies whether the parameters are optional or not. Finally the last column provides some sample input data.
Function call input string-keys are always in the format : "NAME.EXTTAG.TICKER" The "EXTTAG.TICKER" part is determined from the output of other, capetools, object creation functions.


ArgNameIsOptional (Excel only)Example
CDSObjectFALSECDSObjectNAME.EXTTAG.TICKER (from a function call)
PayPremiumFALSEtrue
VolatilityFALSE0.20
StrikeFALSE0.025
SettleDaysFALSE0
dayCounterFALSE30360
CalFALSECalNAME.EXTTAG.TICKER (from a function call)
BusDayConvFALSEModifiedFollowing
GreekFALSEPREMIUM


Example function usage


The C# example below contains all the sub-function calls leading up to this function call. As a result, the example can contain a lot of code.

The VB.NET, J#, C++.NET, Java, Excel VBA, Visual Basic 6 (via COM) and C++ examples below contain function code stubs for the calls leading up to this function call. However, the function call for this function is displayed.
You can easily reproduce the stub functions code from the C# example.


If you are accessing this functrion via the MiniXL libraries, this function is present within the CT.QL.CreditDerivatives20 MiniXL Excel Addin.

Within our Excel Example Addin Generator, we have used the following QuantTools sub-functions in order to prepare the arguments needed to call the CDSOption() function. If you are executing this function via the MiniXL libraries, the module addin name, (in brackets, to the right of the sub-functions listed below), indicates the MiniXL library in which the sub-function is held. You will need to load this library into your Excel session (along with any other libraries that the sub-function call within the addin requires (ie - CT.QT.Utils20 addin in almost all cases) in order for the example to compute successfully.

These are the financial QuantTools sub-function calls that are used within the examples :





The objects generated by these sub-functions are inter-connected in the following way :




The following four examples demostrate calling this function within a Microsoft .NET environment

The following four examples demostrate calling this function within a non .NET environment

The following is a sample output from executing the CDSOption() function call


65150.3340577575

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