cirtree
Build a Cox-Ingersoll-Ross interest-rate tree
Description
Examples
Create a CIR Tree
Create a RateSpec
using the intenvset
function.
Rates = [0.035; 0.042147; 0.047345; 0.052707]; Dates = {'Jan-1-2017'; 'Jan-1-2018'; 'Jan-1-2019'; 'Jan-1-2020'; 'Jan-1-2021'}; ValuationDate = 'Jan-1-2017'; EndDates = Dates(2:end)'; Compounding = 1; RateSpec = intenvset('ValuationDate', ValuationDate, 'StartDates', ValuationDate, 'EndDates',EndDates,'Rates', Rates, 'Compounding', Compounding);
Create a CIR
tree.
NumPeriods = length(EndDates); Alpha = 0.03; Theta = 0.02; Sigma = 0.1; Settle = '01-Jan-2017'; Maturity = '01-Jan-2021'; CIRTimeSpec = cirtimespec(Settle, Maturity, NumPeriods); CIRVolSpec = cirvolspec(Sigma, Alpha, Theta); CIRT = cirtree(CIRVolSpec, RateSpec, CIRTimeSpec)
CIRT = struct with fields:
FinObj: 'CIRFwdTree'
VolSpec: [1x1 struct]
TimeSpec: [1x1 struct]
RateSpec: [1x1 struct]
tObs: [0 1 2 3]
dObs: [736696 737061 737426 737791]
FwdTree: {1x4 cell}
Connect: {[3x1 double] [3x3 double] [3x5 double]}
Probs: {[3x1 double] [3x3 double] [3x5 double]}
Input Arguments
VolSpec
— Volatility process specification
structure
Volatility process specification, specified using the VolSpec
output obtained from cirvolspec
.
Data Types: struct
TimeSpec
— Time tree layout specification
structure
Time tree layout specification, specified using the TimeSpec
output obtained from cirtimespec
.
Data Types: struct
Output Arguments
CIRTree
— Time and interest-rate information of a recombining tree
structure
Time and interest-rate information of a recombining tree, returned as a structure.
Version History
Introduced in R2018a
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