public static QuotedSpread getQuotedSpread(
CDSQuoteConvention quote,
PointsUpFront puf,
BuySellProtection buySellProtection,
ISDACompliantYieldCurve yieldCurve,
CDSAnalytic analytic) {
double quotedSpread;
if (quote instanceof QuotedSpread) {
return (QuotedSpread) quote;
} else {
quotedSpread =
POINTS_UP_FRONT_CONVERTER.pufToQuotedSpread(
analytic, puf.getCoupon(), yieldCurve, puf.getPointsUpFront());
}
// SELL protection reverses directions of legs
quotedSpread = (buySellProtection == BuySellProtection.SELL) ? -quotedSpread : quotedSpread;
return new QuotedSpread(quote.getCoupon(), quotedSpread);
}
public double getUpfrontAmount(
final CDSAnalytic analytic,
final PointsUpFront puf,
final double notional,
final double accPremiumPrim,
final BuySellProtection buySellProtection) {
// upfront amount is defined as dirty PV
double cash = (puf.getPointsUpFront() - accPremiumPrim) * notional;
// SELL protection reverses directions of legs
return (buySellProtection == BuySellProtection.SELL) ? -cash : cash;
}
public double getCleanPrice(final PointsUpFront puf) {
return 100.0 * (1 - puf.getPointsUpFront());
}
@Override
public Set<ComputedValue> execute(
final FunctionExecutionContext executionContext,
final FunctionInputs inputs,
final ComputationTarget target,
final Set<ValueRequirement> desiredValues)
throws AsynchronousExecution {
final ZonedDateTime now = ZonedDateTime.now(executionContext.getValuationClock());
final ValueRequirement requirement = desiredValues.iterator().next();
final ValueProperties properties = requirement.getConstraints().copy().get();
final LegacyVanillaCDSSecurity security = (LegacyVanillaCDSSecurity) target.getSecurity();
// LegacyVanillaCreditDefaultSwapDefinition cds =
// _converter.visitLegacyVanillaCDSSecurity(security);
final ValueRequirement desiredValue = desiredValues.iterator().next(); // all same constraints
final String quoteConventionString =
desiredValue.getConstraint(ISDAFunctionConstants.CDS_QUOTE_CONVENTION);
final StandardCDSQuotingConvention quoteConvention =
StandardCDSQuotingConvention.parse(quoteConventionString);
final CdsRecoveryRateIdentifier recoveryRateIdentifier =
security.accept(
new CreditSecurityToRecoveryRateVisitor(executionContext.getSecuritySource()));
Object recoveryRateObject =
inputs.getValue(
new ValueRequirement(
"PX_LAST",
ComputationTargetType.PRIMITIVE,
recoveryRateIdentifier.getExternalId()));
if (recoveryRateObject == null) {
throw new OpenGammaRuntimeException("Could not get recovery rate");
// s_logger.warn("Could not get recovery rate, defaulting to 0.4: " + recoveryRateIdentifier);
// recoveryRateObject = 0.4;
}
final double recoveryRate = (Double) recoveryRateObject;
// get the isda curve
final Object isdaObject = inputs.getValue(ValueRequirementNames.YIELD_CURVE);
if (isdaObject == null) {
throw new OpenGammaRuntimeException("Couldn't get isda curve");
}
final ISDACompliantYieldCurve yieldCurve = (ISDACompliantYieldCurve) isdaObject;
// spreads
NodalTenorDoubleCurve spreadObject =
(NodalTenorDoubleCurve) inputs.getValue(ValueRequirementNames.BUCKETED_SPREADS);
if (spreadObject == null) {
throw new OpenGammaRuntimeException("Unable to get spreads");
}
final double[] spreads = ArrayUtils.toPrimitive(spreadObject.getYData());
// final String pillarString = IMMDateGenerator.isIMMDate(security.getMaturityDate()) ?
// requirement.getConstraint(ISDAFunctionConstants.ISDA_BUCKET_TENORS) :
// ISDACompliantCreditCurveFunction.NON_IMM_PILLAR_TENORS;
final ZonedDateTime[] bucketDates =
SpreadCurveFunctions.getPillarDates(now, spreadObject.getXData());
final CDSQuoteConvention[] quotes =
SpreadCurveFunctions.getQuotes(
security.getMaturityDate(), spreads, security.getParSpread(), quoteConvention, false);
// spreads
NodalTenorDoubleCurve pillarObject =
(NodalTenorDoubleCurve) inputs.getValue(ValueRequirementNames.PILLAR_SPREADS);
if (pillarObject == null) {
throw new OpenGammaRuntimeException("Unable to get pillars");
}
// CDS analytics for credit curve (possible performance improvement if earlier result obtained)
// final LegacyVanillaCreditDefaultSwapDefinition curveCDS = cds.withStartDate(now);
// security.setStartDate(now); // needed for curve instruments
final CDSAnalytic[] bucketCDSs = new CDSAnalytic[bucketDates.length];
for (int i = 0; i < bucketCDSs.length; i++) {
// security.setMaturityDate(bucketDates[i]);
final CDSAnalyticVisitor visitor =
new CDSAnalyticVisitor(
now.toLocalDate(),
_holidaySource,
_regionSource,
security.getStartDate().toLocalDate(),
bucketDates[i].toLocalDate(),
recoveryRate);
bucketCDSs[i] = security.accept(visitor);
}
final ZonedDateTime[] pillarDates =
SpreadCurveFunctions.getPillarDates(now, pillarObject.getXData());
final CDSAnalytic[] pillarCDSs = new CDSAnalytic[pillarDates.length];
for (int i = 0; i < pillarCDSs.length; i++) {
// security.setMaturityDate(bucketDates[i]);
final CDSAnalyticVisitor visitor =
new CDSAnalyticVisitor(
now.toLocalDate(),
_holidaySource,
_regionSource,
security.getStartDate().toLocalDate(),
pillarDates[i].toLocalDate(),
recoveryRate);
pillarCDSs[i] = security.accept(visitor);
}
final ISDACompliantCreditCurve creditCurve =
(ISDACompliantCreditCurve) inputs.getValue(ValueRequirementNames.HAZARD_RATE_CURVE);
if (creditCurve == null) {
throw new OpenGammaRuntimeException("Couldnt get credit curve");
}
// final CDSAnalytic analytic = CDSAnalyticConverter.create(cds, now.toLocalDate());
final CDSAnalyticVisitor visitor =
new CDSAnalyticVisitor(now.toLocalDate(), _holidaySource, _regionSource, recoveryRate);
final CDSAnalytic analytic = security.accept(visitor);
final BuySellProtection buySellProtection =
security.isBuy() ? BuySellProtection.BUY : BuySellProtection.SELL;
// final String term = new Tenor(Period.between(security.getStartDate().toLocalDate(),
// security.getMaturityDate().toLocalDate())).getPeriod().toString();
// final Double cdsQuoteDouble = (Double) inputs.getValue(new
// ValueRequirement(MarketDataRequirementNames.MARKET_VALUE,
// ComputationTargetType.PRIMITIVE, ExternalId.of("Tenor", term)));
final Double cdsQuoteDouble = (Double) inputs.getValue(MarketDataRequirementNames.MARKET_VALUE);
if (cdsQuoteDouble == null) {
throw new OpenGammaRuntimeException("Couldn't get spread for " + security);
}
final CDSQuoteConvention quote =
SpreadCurveFunctions.getQuotes(
security.getMaturityDate(),
new double[] {cdsQuoteDouble},
security.getParSpread(),
quoteConvention,
true)[0];
boolean isNonIMMFAndFromPUF =
!IMMDateLogic.isIMMDate(security.getMaturityDate().toLocalDate())
&& quote instanceof PointsUpFront;
boolean isNonIMMAndFromSpread =
!IMMDateLogic.isIMMDate(security.getMaturityDate().toLocalDate())
&& (quote instanceof QuotedSpread || quote instanceof ParSpread);
int buySellPremiumFactor = security.isBuy() ? -1 : 1;
final double notional = security.getNotional().getAmount();
final double coupon = security.getParSpread() * ONE_BPS;
final PointsUpFront puf =
getPointsUpfront(quote, buySellProtection, yieldCurve, analytic, creditCurve);
final double accruedPremiumPrim =
isNonIMMAndFromSpread || isNonIMMFAndFromPUF ? 0 : analytic.getAccruedPremium(coupon);
// final double accruedPremium = isNonIMMAndFromSpread || isNonIMMFAndFromPUF ? 0 :
// analytic.getAccruedPremium(coupon) * notional * buySellPremiumFactor;
final double accruedPremium =
isNonIMMAndFromSpread || isNonIMMFAndFromPUF
? 0
: accruedPremiumPrim * notional * buySellPremiumFactor;
final int accruedDays =
isNonIMMAndFromSpread || isNonIMMFAndFromPUF ? 0 : analytic.getAccuredDays();
final double quotedSpread =
getQuotedSpread(quote, puf, buySellProtection, yieldCurve, analytic).getQuotedSpread();
final double upfrontAmount =
isNonIMMAndFromSpread
? 0
: getUpfrontAmount(analytic, puf, notional, accruedPremiumPrim, buySellProtection);
final double cleanPV = puf.getPointsUpFront() * notional;
final double principal = isNonIMMAndFromSpread ? 0 : cleanPV;
final double cleanPrice = getCleanPrice(puf);
final TenorLabelledMatrix1D bucketedCS01 =
getBucketedCS01(
analytic,
bucketCDSs,
spreadObject.getXData(),
quote,
notional,
yieldCurve,
creditCurve);
final double parallelCS01 =
getParallelCS01(
quote,
analytic,
yieldCurve,
notional,
pillarCDSs,
ArrayUtils.toPrimitive(pillarObject.getYData()));
final Set<ComputedValue> results = Sets.newHashSetWithExpectedSize(_valueRequirements.length);
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.ACCRUED_PREMIUM, target.toSpecification(), properties),
accruedPremium));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.ACCRUED_DAYS, target.toSpecification(), properties),
accruedDays));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.QUOTED_SPREAD, target.toSpecification(), properties),
quotedSpread / ONE_BPS));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.UPFRONT_AMOUNT, target.toSpecification(), properties),
upfrontAmount));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.DIRTY_PRESENT_VALUE, target.toSpecification(), properties),
upfrontAmount));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.CLEAN_PRESENT_VALUE, target.toSpecification(), properties),
cleanPV));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.PRINCIPAL, target.toSpecification(), properties),
principal));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.CLEAN_PRICE, target.toSpecification(), properties),
cleanPrice));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.BUCKETED_CS01, target.toSpecification(), properties),
bucketedCS01));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.PARALLEL_CS01, target.toSpecification(), properties),
parallelCS01));
results.add(
new ComputedValue(
new ValueSpecification(
ValueRequirementNames.POINTS_UPFRONT, target.toSpecification(), properties),
puf.getPointsUpFront()));
return results;
}