protected override void performCalculations()
{
Calendar calendar = index_.fixingCalendar();
int fixingDays = index_.fixingDays();
Date exerciseDate = exerciseDate_;
if (exerciseDate == null)
{
exerciseDate = calendar.advance(termStructure_.link.referenceDate(),
maturity_,
index_.businessDayConvention());
}
Date startDate = calendar.advance(exerciseDate,
fixingDays, TimeUnit.Days,
index_.businessDayConvention());
Date endDate = endDate_;
if (endDate == null)
{
endDate = calendar.advance(startDate, length_,
index_.businessDayConvention());
}
Schedule fixedSchedule = new Schedule(startDate, endDate, fixedLegTenor_, calendar,
index_.businessDayConvention(),
index_.businessDayConvention(),
DateGeneration.Rule.Forward, false);
Schedule floatSchedule = new Schedule(startDate, endDate, index_.tenor(), calendar,
index_.businessDayConvention(),
index_.businessDayConvention(),
DateGeneration.Rule.Forward, false);
IPricingEngine swapEngine = new DiscountingSwapEngine(termStructure_, false);
VanillaSwap.Type type = VanillaSwap.Type.Receiver;
VanillaSwap temp = new VanillaSwap(VanillaSwap.Type.Receiver, nominal_,
fixedSchedule, 0.0, fixedLegDayCounter_,
floatSchedule, index_, 0.0, floatingLegDayCounter_);
temp.setPricingEngine(swapEngine);
double forward = temp.fairRate();
if (!strike_.HasValue)
{
exerciseRate_ = forward;
}
else
{
exerciseRate_ = strike_.Value;
type = strike_ <= forward ? VanillaSwap.Type.Receiver : VanillaSwap.Type.Payer;
// ensure that calibration instrument is out of the money
}
swap_ = new VanillaSwap(type, nominal_,
fixedSchedule, exerciseRate_, fixedLegDayCounter_,
floatSchedule, index_, 0.0, floatingLegDayCounter_);
swap_.setPricingEngine(swapEngine);
Exercise exercise = new EuropeanExercise(exerciseDate);
swaption_ = new Swaption(swap_, exercise);
base.performCalculations();
}
public override void calculate()
{
Utils.QL_REQUIRE(arguments_.exercise.type() == Exercise.Type.European, () => "not an European Option");
EuropeanExercise exercise = arguments_.exercise as EuropeanExercise;
Utils.QL_REQUIRE(exercise != null, () => "not an European Option");
BasketPayoff basket_payoff = arguments_.payoff as BasketPayoff;
MinBasketPayoff min_basket = arguments_.payoff as MinBasketPayoff;
MaxBasketPayoff max_basket = arguments_.payoff as MaxBasketPayoff;
Utils.QL_REQUIRE(min_basket != null || max_basket != null, () => "unknown basket type");
PlainVanillaPayoff payoff = basket_payoff.basePayoff() as PlainVanillaPayoff;
Utils.QL_REQUIRE(payoff != null, () => "non-plain payoff given");
double strike = payoff.strike();
double variance1 = process1_.blackVolatility().link.blackVariance(exercise.lastDate(), strike);
double variance2 = process2_.blackVolatility().link.blackVariance(exercise.lastDate(), strike);
double riskFreeDiscount = process1_.riskFreeRate().link.discount(exercise.lastDate());
// cannot handle non zero dividends, so don't believe this...
double dividendDiscount1 = process1_.dividendYield().link.discount(exercise.lastDate());
double dividendDiscount2 = process2_.dividendYield().link.discount(exercise.lastDate());
double forward1 = process1_.stateVariable().link.value() * dividendDiscount1 / riskFreeDiscount;
double forward2 = process2_.stateVariable().link.value() * dividendDiscount2 / riskFreeDiscount;
if (max_basket != null)
{
switch (payoff.optionType())
{
// euro call on a two asset max basket
case Option.Type.Call:
results_.value = euroTwoAssetMaxBasketCall(forward1, forward2, strike,
riskFreeDiscount,
variance1, variance2,
rho_);
break;
// euro put on a two asset max basket
case Option.Type.Put:
results_.value = strike * riskFreeDiscount -
euroTwoAssetMaxBasketCall(forward1, forward2, 0.0,
riskFreeDiscount,
variance1, variance2, rho_) +
euroTwoAssetMaxBasketCall(forward1, forward2, strike,
riskFreeDiscount,
variance1, variance2, rho_);
break;
default:
Utils.QL_FAIL("unknown option type");
break;
}
}
else if (min_basket != null)
{
switch (payoff.optionType())
{
// euro call on a two asset min basket
case Option.Type.Call:
results_.value = euroTwoAssetMinBasketCall(forward1, forward2, strike,
riskFreeDiscount,
variance1, variance2,
rho_);
break;
// euro put on a two asset min basket
case Option.Type.Put:
results_.value = strike * riskFreeDiscount -
euroTwoAssetMinBasketCall(forward1, forward2, 0.0,
riskFreeDiscount,
variance1, variance2, rho_) +
euroTwoAssetMinBasketCall(forward1, forward2, strike,
riskFreeDiscount,
variance1, variance2, rho_);
break;
default:
Utils.QL_FAIL("unknown option type");
break;
}
}
else
{
Utils.QL_FAIL("unknown type");
}
}
public override void calculate()
{
AmericanExercise ex = arguments_.exercise as AmericanExercise;
Utils.QL_REQUIRE(ex != null, () => "non-American exercise given");
Utils.QL_REQUIRE(ex.payoffAtExpiry(), () => "payoff must be at expiry");
Utils.QL_REQUIRE(ex.dates()[0] <= process_.blackVolatility().link.referenceDate(), () =>
"American option with window exercise not handled yet");
StrikedTypePayoff payoff = arguments_.payoff as StrikedTypePayoff;
Utils.QL_REQUIRE(payoff != null, () => "non-striked payoff given");
double spot = process_.stateVariable().link.value();
Utils.QL_REQUIRE(spot > 0.0, () => "negative or null underlying given");
double variance = process_.blackVolatility().link.blackVariance(ex.lastDate(), payoff.strike());
double?barrier = arguments_.barrier;
Utils.QL_REQUIRE(barrier > 0.0, () => "positive barrier value required");
Barrier.Type barrierType = arguments_.barrierType;
// KO degenerate cases
if ((barrierType == Barrier.Type.DownOut && spot <= barrier) ||
(barrierType == Barrier.Type.UpOut && spot >= barrier))
{
// knocked out, no value
results_.value = 0;
results_.delta = 0;
results_.gamma = 0;
results_.vega = 0;
results_.theta = 0;
results_.rho = 0;
results_.dividendRho = 0;
return;
}
// KI degenerate cases
if ((barrierType == Barrier.Type.DownIn && spot <= barrier) ||
(barrierType == Barrier.Type.UpIn && spot >= barrier))
{
// knocked in - is a digital european
Exercise exercise = new EuropeanExercise(arguments_.exercise.lastDate());
IPricingEngine engine = new AnalyticEuropeanEngine(process_);
VanillaOption opt = new VanillaOption(payoff, exercise);
opt.setPricingEngine(engine);
results_.value = opt.NPV();
results_.delta = opt.delta();
results_.gamma = opt.gamma();
results_.vega = opt.vega();
results_.theta = opt.theta();
results_.rho = opt.rho();
results_.dividendRho = opt.dividendRho();
return;
}
double riskFreeDiscount = process_.riskFreeRate().link.discount(ex.lastDate());
AnalyticBinaryBarrierEngine_helper helper = new AnalyticBinaryBarrierEngine_helper(
process_, payoff, ex, arguments_);
results_.value = helper.payoffAtExpiry(spot, variance, riskFreeDiscount);
}
public override void calculate()
{
if (arguments_.barrierType == DoubleBarrier.Type.KIKO ||
arguments_.barrierType == DoubleBarrier.Type.KOKI)
{
AmericanExercise ex = arguments_.exercise as AmericanExercise;
Utils.QL_REQUIRE(ex != null, () => "KIKO/KOKI options must have American exercise");
Utils.QL_REQUIRE(ex.dates()[0] <=
process_.blackVolatility().currentLink().referenceDate(),
() => "American option with window exercise not handled yet");
}
else
{
EuropeanExercise ex = arguments_.exercise as EuropeanExercise;
Utils.QL_REQUIRE(ex != null, () => "non-European exercise given");
}
CashOrNothingPayoff payoff = arguments_.payoff as CashOrNothingPayoff;
Utils.QL_REQUIRE(payoff != null, () => "a cash-or-nothing payoff must be given");
double spot = process_.stateVariable().currentLink().value();
Utils.QL_REQUIRE(spot > 0.0, () => "negative or null underlying given");
double variance =
process_.blackVolatility().currentLink().blackVariance(
arguments_.exercise.lastDate(),
payoff.strike());
double barrier_lo = arguments_.barrier_lo.Value;
double barrier_hi = arguments_.barrier_hi.Value;
DoubleBarrier.Type barrierType = arguments_.barrierType;
Utils.QL_REQUIRE(barrier_lo > 0.0,
() => "positive low barrier value required");
Utils.QL_REQUIRE(barrier_hi > 0.0,
() => "positive high barrier value required");
Utils.QL_REQUIRE(barrier_lo < barrier_hi,
() => "barrier_lo must be < barrier_hi");
Utils.QL_REQUIRE(barrierType == DoubleBarrier.Type.KnockIn ||
barrierType == DoubleBarrier.Type.KnockOut ||
barrierType == DoubleBarrier.Type.KIKO ||
barrierType == DoubleBarrier.Type.KOKI,
() => "Unsupported barrier type");
// degenerate cases
switch (barrierType)
{
case DoubleBarrier.Type.KnockOut:
if (spot <= barrier_lo || spot >= barrier_hi)
{
// knocked out, no value
results_.value = 0;
results_.delta = 0;
results_.gamma = 0;
results_.vega = 0;
results_.rho = 0;
return;
}
break;
case DoubleBarrier.Type.KnockIn:
if (spot <= barrier_lo || spot >= barrier_hi)
{
// knocked in - pays
results_.value = payoff.cashPayoff();
results_.delta = 0;
results_.gamma = 0;
results_.vega = 0;
results_.rho = 0;
return;
}
break;
case DoubleBarrier.Type.KIKO:
if (spot >= barrier_hi)
{
// knocked out, no value
results_.value = 0;
results_.delta = 0;
results_.gamma = 0;
results_.vega = 0;
results_.rho = 0;
return;
}
else if (spot <= barrier_lo)
{
// knocked in, pays
results_.value = payoff.cashPayoff();
results_.delta = 0;
results_.gamma = 0;
results_.vega = 0;
results_.rho = 0;
return;
}
break;
case DoubleBarrier.Type.KOKI:
if (spot <= barrier_lo)
{
// knocked out, no value
results_.value = 0;
results_.delta = 0;
results_.gamma = 0;
results_.vega = 0;
results_.rho = 0;
return;
}
else if (spot >= barrier_hi)
{
// knocked in, pays
results_.value = payoff.cashPayoff();
results_.delta = 0;
results_.gamma = 0;
results_.vega = 0;
results_.rho = 0;
return;
}
break;
}
AnalyticDoubleBarrierBinaryEngineHelper helper = new AnalyticDoubleBarrierBinaryEngineHelper(process_,
payoff, arguments_);
switch (barrierType)
{
case DoubleBarrier.Type.KnockOut:
case DoubleBarrier.Type.KnockIn:
results_.value = helper.payoffAtExpiry(spot, variance, barrierType);
break;
case DoubleBarrier.Type.KIKO:
case DoubleBarrier.Type.KOKI:
results_.value = helper.payoffKIKO(spot, variance, barrierType);
break;
default:
results_.value = null;
break;
}
}
public CliquetOption(PercentageStrikePayoff payoff, EuropeanExercise maturity, List <Date> resetDates)
: base(payoff, maturity)
{
resetDates_ = new List <Date>(resetDates);
}