public DepositRateHelper(double rate, IborIndex i)
: base(rate)
{
iborIndex_ = new IborIndex("no-fix", // never take fixing into account
i.tenor(), i.fixingDays(), new Currency(),
i.fixingCalendar(), i.businessDayConvention(),
i.endOfMonth(), i.dayCounter(), termStructureHandle_);
initializeDates();
}
public DepositRateHelper(double rate, IborIndex i)
: base(rate)
{
iborIndex_ = new IborIndex("no-fix", // never take fixing into account
i.tenor(), i.fixingDays(), new Currency(),
i.fixingCalendar(), i.businessDayConvention(),
i.endOfMonth(), i.dayCounter(), termStructureHandle_);
initializeDates();
}
public FraRateHelper(double rate, int monthsToStart, IborIndex i) : base(rate)
{
periodToStart_ = new Period(monthsToStart, TimeUnit.Months);
iborIndex_ = new IborIndex("no-fix", // never take fixing into account
i.tenor(), i.fixingDays(), new Currency(),
i.fixingCalendar(), i.businessDayConvention(),
i.endOfMonth(), i.dayCounter(), termStructureHandle_);
initializeDates();
}
public FRARateHelper(double rate, int monthsToStart, IborIndex i)
: base(rate)
{
periodToStart_ = new Period(monthsToStart, TimeUnit.Months);
iborIndex_ = new IborIndex("no-fix", // never take fixing into account
i.tenor(), i.fixingDays(), new Currency(),
i.fixingCalendar(), i.businessDayConvention(),
i.endOfMonth(), i.dayCounter(), termStructureHandle_);
initializeDates();
}
protected override void initializeDates()
{
earliestDate_ = calendar_.advance(evaluationDate_, new Period(settlementDays_, TimeUnit.Days),
BusinessDayConvention.Following);
Date maturity = earliestDate_ + tenor_;
// dummy BMA index with curve/swap arguments
BMAIndex clonedIndex = new BMAIndex(termStructureHandle_);
Schedule bmaSchedule = new MakeSchedule().from(earliestDate_).to(maturity)
.withTenor(bmaPeriod_)
.withCalendar(bmaIndex_.fixingCalendar())
.withConvention(bmaConvention_)
.backwards()
.value();
Schedule liborSchedule = new MakeSchedule().from(earliestDate_).to(maturity)
.withTenor(iborIndex_.tenor())
.withCalendar(iborIndex_.fixingCalendar())
.withConvention(iborIndex_.businessDayConvention())
.endOfMonth(iborIndex_.endOfMonth())
.backwards()
.value();
swap_ = new BMASwap(BMASwap.Type.Payer, 100.0, liborSchedule, 0.75, // arbitrary
0.0, iborIndex_, iborIndex_.dayCounter(), bmaSchedule, clonedIndex, bmaDayCount_);
swap_.setPricingEngine(new DiscountingSwapEngine(iborIndex_.forwardingTermStructure()));
Date d = calendar_.adjust(swap_.maturityDate(), BusinessDayConvention.Following);
int w = d.weekday();
Date nextWednesday = (w >= 4) ? d + new Period((11 - w), TimeUnit.Days) :
d + new Period((4 - w), TimeUnit.Days);
latestDate_ = clonedIndex.valueDate(clonedIndex.fixingCalendar().adjust(nextWednesday));
}
public CapHelper(Period length,
Handle<Quote> volatility,
IborIndex index,
// data for ATM swap-rate calculation
Frequency fixedLegFrequency,
DayCounter fixedLegDayCounter,
bool includeFirstSwaplet,
Handle<YieldTermStructure> termStructure,
bool calibrateVolatility /*= false*/)
: base(volatility, termStructure, calibrateVolatility)
{
Period indexTenor = index.tenor();
double fixedRate = 0.04; // dummy value
Date startDate, maturity;
if (includeFirstSwaplet) {
startDate = termStructure.link.referenceDate();
maturity = termStructure.link.referenceDate() + length;
} else {
startDate = termStructure.link.referenceDate() + indexTenor;
maturity = termStructure.link.referenceDate() + length;
}
IborIndex dummyIndex=new
IborIndex("dummy",
indexTenor,
index.fixingDays(),
index.currency(),
index.fixingCalendar(),
index.businessDayConvention(),
index.endOfMonth(),
termStructure.link.dayCounter(),
termStructure);
List<double> nominals = new InitializedList<double>(1,1.0);
Schedule floatSchedule=new Schedule(startDate, maturity,
index.tenor(), index.fixingCalendar(),
index.businessDayConvention(),
index.businessDayConvention(),
DateGeneration.Rule.Forward, false);
List<CashFlow> floatingLeg;
IborLeg iborLeg = (IborLeg) new IborLeg(floatSchedule, index)
.withFixingDays(0)
.withNotionals(nominals)
.withPaymentAdjustment(index.businessDayConvention());
floatingLeg = iborLeg.value();
Schedule fixedSchedule=new Schedule(startDate, maturity, new Period(fixedLegFrequency),
index.fixingCalendar(),
BusinessDayConvention.Unadjusted, BusinessDayConvention.Unadjusted,
DateGeneration.Rule.Forward, false);
List<CashFlow> fixedLeg = new FixedRateLeg(fixedSchedule)
.withCouponRates(fixedRate, fixedLegDayCounter)
.withNotionals(nominals)
.withPaymentAdjustment(index.businessDayConvention());
Swap swap = new Swap(floatingLeg, fixedLeg);
swap.setPricingEngine(new DiscountingSwapEngine(termStructure));
double bp = 1.0e-4;
double fairRate = fixedRate - (double)(swap.NPV()/(swap.legBPS(1) / bp));
List<double> exerciceRate = new InitializedList<double>(1,fairRate);
cap_ = new Cap(floatingLeg, exerciceRate);
marketValue_ = blackPrice(volatility_.link.value());
}
public CapHelper(Period length,
Handle <Quote> volatility,
IborIndex index,
// data for ATM swap-rate calculation
Frequency fixedLegFrequency,
DayCounter fixedLegDayCounter,
bool includeFirstSwaplet,
Handle <YieldTermStructure> termStructure,
bool calibrateVolatility /*= false*/)
: base(volatility, termStructure, calibrateVolatility)
{
Period indexTenor = index.tenor();
double fixedRate = 0.04; // dummy value
Date startDate, maturity;
if (includeFirstSwaplet)
{
startDate = termStructure.link.referenceDate();
maturity = termStructure.link.referenceDate() + length;
}
else
{
startDate = termStructure.link.referenceDate() + indexTenor;
maturity = termStructure.link.referenceDate() + length;
}
IborIndex dummyIndex = new
IborIndex("dummy",
indexTenor,
index.fixingDays(),
index.currency(),
index.fixingCalendar(),
index.businessDayConvention(),
index.endOfMonth(),
termStructure.link.dayCounter(),
termStructure);
List <double> nominals = new InitializedList <double>(1, 1.0);
Schedule floatSchedule = new Schedule(startDate, maturity,
index.tenor(), index.fixingCalendar(),
index.businessDayConvention(),
index.businessDayConvention(),
DateGeneration.Rule.Forward, false);
List <CashFlow> floatingLeg;
IborLeg iborLeg = (IborLeg) new IborLeg(floatSchedule, index)
.withFixingDays(0)
.withNotionals(nominals)
.withPaymentAdjustment(index.businessDayConvention());
floatingLeg = iborLeg.value();
Schedule fixedSchedule = new Schedule(startDate, maturity, new Period(fixedLegFrequency),
index.fixingCalendar(),
BusinessDayConvention.Unadjusted, BusinessDayConvention.Unadjusted,
DateGeneration.Rule.Forward, false);
List <CashFlow> fixedLeg = new FixedRateLeg(fixedSchedule)
.withCouponRates(fixedRate, fixedLegDayCounter)
.withNotionals(nominals)
.withPaymentAdjustment(index.businessDayConvention());
Swap swap = new Swap(floatingLeg, fixedLeg);
swap.setPricingEngine(new DiscountingSwapEngine(termStructure));
double bp = 1.0e-4;
double fairRate = fixedRate - (double)(swap.NPV() / (swap.legBPS(1) / bp));
List <double> exerciceRate = new InitializedList <double>(1, fairRate);
cap_ = new Cap(floatingLeg, exerciceRate);
marketValue_ = blackPrice(volatility_.link.value());
}
protected override void initializeDates()
{
// why not using index_->fixingDays instead of settlementDays_
Date settlement = iborIndex_.fixingCalendar().advance(evaluationDate_, iborIndex_.fixingDays(), TimeUnit.Days);
earliestDate_ = iborIndex_.fixingCalendar().advance(settlement, periodToStart_,
iborIndex_.businessDayConvention(), iborIndex_.endOfMonth());
latestDate_ = iborIndex_.maturityDate(earliestDate_);
fixingDate_ = iborIndex_.fixingDate(earliestDate_);
}
