1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
Copyright (C) 2006 Allen Kuo
This file is part of QuantLib, a free-software/open-source library
for financial quantitative analysts and developers - http://quantlib.org/
QuantLib is free software: you can redistribute it and/or modify it
under the terms of the QuantLib license. You should have received a
copy of the license along with this program; if not, please email
<quantlib-dev@lists.sf.net>. The license is also available online at
<https://www.quantlib.org/license.shtml>.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the license for more details.
*/
/*! \file forwardrateagreement.hpp
\brief forward rate agreement
*/
#ifndef quantlib_forward_rate_agreement_hpp
#define quantlib_forward_rate_agreement_hpp
#include <ql/instruments/forward.hpp>
namespace QuantLib {
class IborIndex;
//! %Forward rate agreement (FRA) class
/*! 1. Unlike the forward contract conventions on carryable
financial assets (stocks, bonds, commodities), the
valueDate for a FRA is taken to be the day when the forward
loan or deposit begins and when full settlement takes place
(based on the NPV of the contract on that date).
maturityDate is the date when the forward loan or deposit
ends. In fact, the FRA settles and expires on the
valueDate, not on the (later) maturityDate. It follows that
(maturityDate - valueDate) is the tenor/term of the
underlying loan or deposit
2. Choose position type = Long for an "FRA purchase" (future
long loan, short deposit [borrower])
3. Choose position type = Short for an "FRA sale" (future short
loan, long deposit [lender])
<b>Example: </b>
\link FRA.cpp
valuation of a forward-rate agreement
\endlink
\todo Add preconditions and tests
\todo Differentiate between BBA (British)/AFB (French)
[assumed here] and ABA (Australian) banker conventions
in the calculations.
\warning This class still needs to be rigorously tested
\ingroup instruments
*/
class ForwardRateAgreement: public Instrument {
public:
/*! When using this constructor, the forward rate will be
forecast by the passed index. This corresponds to
useIndexedCoupon=true in the FraRateHelper class.
*/
ForwardRateAgreement(
const ext::shared_ptr<IborIndex>& index,
const Date& valueDate,
Position::Type type,
Rate strikeForwardRate,
Real notionalAmount,
Handle<YieldTermStructure> discountCurve = {});
/*! When using this constructor, a par-rate approximation will
be used, i.e., the forward rate will be forecast from
value date to maturity date by the forecast curve
contained in the index. This corresponds to
useIndexedCoupon=false in the FraRateHelper class.
*/
ForwardRateAgreement(
const ext::shared_ptr<IborIndex>& index,
const Date& valueDate,
const Date& maturityDate,
Position::Type type,
Rate strikeForwardRate,
Real notionalAmount,
Handle<YieldTermStructure> discountCurve = {});
//! \name Calculations
//@{
//! A FRA expires/settles on the value date
bool isExpired() const override;
//! The payoff on the value date
Real amount() const;
const Calendar& calendar() const;
BusinessDayConvention businessDayConvention() const;
const DayCounter& dayCounter() const;
//! term structure relevant to the contract (e.g. repo curve)
Handle<YieldTermStructure> discountCurve() const;
Date fixingDate() const;
//! Returns the relevant forward rate associated with the FRA term
InterestRate forwardRate() const;
//@}
protected:
void setupExpired() const override;
void performCalculations() const override;
Position::Type fraType_;
//! aka FRA rate (the market forward rate)
mutable InterestRate forwardRate_;
//! aka FRA fixing rate, contract rate
InterestRate strikeForwardRate_;
Real notionalAmount_;
ext::shared_ptr<IborIndex> index_;
bool useIndexedCoupon_;
DayCounter dayCounter_;
Calendar calendar_;
BusinessDayConvention businessDayConvention_;
//! the valueDate is the date the underlying index starts accruing and the FRA is settled.
Date valueDate_;
//! maturityDate of the underlying index; not the date the FRA is settled.
Date maturityDate_;
Handle<YieldTermStructure> discountCurve_;
private:
void calculateForwardRate() const;
void calculateAmount() const;
mutable Real amount_;
};
inline const Calendar& ForwardRateAgreement::calendar() const { return calendar_; }
inline BusinessDayConvention ForwardRateAgreement::businessDayConvention() const {
return businessDayConvention_;
}
inline const DayCounter& ForwardRateAgreement::dayCounter() const { return dayCounter_; }
inline Handle<YieldTermStructure> ForwardRateAgreement::discountCurve() const {
return discountCurve_;
}
}
#endif
|
