public virtual void test_bondDiscountingProvider()
{
LocalDate valDate = LocalDate.of(2015, 6, 30);
Curve ccAUsd = ConstantNodalCurve.of(Curves.zeroRates(CC_A_USD.CurveName, ACT_365F), 0.5d, 1.5d);
Curve ccBGbp = ConstantNodalCurve.of(Curves.zeroRates(CC_B_GBP.CurveName, ACT_365F), 0.5d, 2d);
Curve ccAGbp = ConstantNodalCurve.of(Curves.zeroRates(CC_A_GBP.CurveName, ACT_365F), 0.5d, 3d);
Curve dcGbp = ConstantNodalCurve.of(Curves.zeroRates(DC_GBP.CurveName, ACT_365F), 0.5d, 0.1d);
Curve dcUsd = ConstantNodalCurve.of(Curves.zeroRates(DC_USD.CurveName, ACT_365F), 0.5d, 0.05d);
Curve rcA = ConstantCurve.of(Curves.recoveryRates(RC_A.CurveName, ACT_365F), 0.5d);
Curve rcB = ConstantCurve.of(Curves.recoveryRates(RC_B.CurveName, ACT_365F), 0.4234d);
IDictionary <CurveId, Curve> curveMap = new Dictionary <CurveId, Curve>();
curveMap[CC_A_USD] = ccAUsd;
curveMap[CC_B_GBP] = ccBGbp;
curveMap[CC_A_GBP] = ccAGbp;
curveMap[DC_USD] = dcUsd;
curveMap[DC_GBP] = dcGbp;
curveMap[RC_A] = rcA;
curveMap[RC_B] = rcB;
MarketData md = ImmutableMarketData.of(valDate, ImmutableMap.copyOf(curveMap));
CreditRatesProvider provider = LOOKUP_WITH_SOURCE.creditRatesProvider(md);
assertEquals(provider.ValuationDate, valDate);
assertEquals(provider.findData(CC_A_USD.CurveName), ccAUsd);
assertEquals(provider.findData(DC_USD.CurveName), dcUsd);
assertEquals(provider.findData(RC_B.CurveName), rcB);
assertEquals(provider.findData(CurveName.of("Rubbish")), null);
// check credit curve
LegalEntitySurvivalProbabilities cc = provider.survivalProbabilities(ISSUER_A, GBP);
IsdaCreditDiscountFactors ccUnder = (IsdaCreditDiscountFactors)cc.SurvivalProbabilities;
assertEquals(ccUnder.Curve.Name, ccAGbp.Name);
assertThrowsRuntime(() => provider.survivalProbabilities(ISSUER_B, USD));
assertThrowsRuntime(() => provider.survivalProbabilities(ISSUER_C, USD));
// check discount curve
IsdaCreditDiscountFactors dc = (IsdaCreditDiscountFactors)provider.discountFactors(USD);
assertEquals(dc.Curve.Name, dcUsd.Name);
assertThrowsRuntime(() => provider.discountFactors(EUR));
// check recovery rate curve
ConstantRecoveryRates rc = (ConstantRecoveryRates)provider.recoveryRates(ISSUER_B);
assertEquals(rc.RecoveryRate, rcB.getParameter(0));
assertThrowsRuntime(() => provider.recoveryRates(ISSUER_C));
}
private Pair <CreditDiscountFactors, LegalEntitySurvivalProbabilities> reduceDiscountFactors(ResolvedCds cds, CreditRatesProvider ratesProvider)
{
Currency currency = cds.Currency;
CreditDiscountFactors discountFactors = ratesProvider.discountFactors(currency);
ArgChecker.isTrue(discountFactors.IsdaCompliant, "discount factors must be IsdaCompliantZeroRateDiscountFactors");
LegalEntitySurvivalProbabilities survivalProbabilities = ratesProvider.survivalProbabilities(cds.LegalEntityId, currency);
ArgChecker.isTrue(survivalProbabilities.SurvivalProbabilities.IsdaCompliant, "survival probabilities must be IsdaCompliantZeroRateDiscountFactors");
ArgChecker.isTrue(discountFactors.DayCount.Equals(survivalProbabilities.SurvivalProbabilities.DayCount), "day count conventions of discounting curve and credit curve must be the same");
return(Pair.of(discountFactors, survivalProbabilities));
}
//-------------------------------------------------------------------------
/// <summary>
/// Calculates the present value of the trade.
/// <para>
/// The present value of the product is based on the valuation date.
/// </para>
/// <para>
/// This method can calculate the clean or dirty present value, see <seealso cref="PriceType"/>.
/// If calculating the clean value, the accrued interest is calculated based on the step-in date.
///
/// </para>
/// </summary>
/// <param name="trade"> the trade </param>
/// <param name="ratesProvider"> the rates provider </param>
/// <param name="priceType"> the price type </param>
/// <param name="refData"> the reference data </param>
/// <returns> the price </returns>
public virtual CurrencyAmount presentValue(ResolvedCdsTrade trade, CreditRatesProvider ratesProvider, PriceType priceType, ReferenceData refData)
{
CurrencyAmount pvProduct = productPricer.presentValue(trade.Product, ratesProvider, ratesProvider.ValuationDate, priceType, refData);
if (!trade.UpfrontFee.Present)
{
return(pvProduct);
}
Payment upfront = trade.UpfrontFee.get();
CurrencyAmount pvUpfront = upfrontPricer.presentValue(upfront, ratesProvider.discountFactors(upfront.Currency).toDiscountFactors());
return(pvProduct.plus(pvUpfront));
}
internal virtual Triple <CreditDiscountFactors, LegalEntitySurvivalProbabilities, double> reduceDiscountFactors(ResolvedCds cds, CreditRatesProvider ratesProvider)
{
Currency currency = cds.Currency;
CreditDiscountFactors discountFactors = ratesProvider.discountFactors(currency);
ArgChecker.isTrue(discountFactors.IsdaCompliant, "discount factors must be IsdaCompliantZeroRateDiscountFactors");
LegalEntitySurvivalProbabilities survivalProbabilities = ratesProvider.survivalProbabilities(cds.LegalEntityId, currency);
ArgChecker.isTrue(survivalProbabilities.SurvivalProbabilities.IsdaCompliant, "survival probabilities must be IsdaCompliantZeroRateDiscountFactors");
ArgChecker.isTrue(discountFactors.DayCount.Equals(survivalProbabilities.SurvivalProbabilities.DayCount), "day count conventions of discounting curve and credit curve must be the same");
double indexFactor = ((IsdaCreditDiscountFactors)survivalProbabilities.SurvivalProbabilities).Curve.Metadata.getInfo(CurveInfoType.CDS_INDEX_FACTOR);
return(Triple.of(discountFactors, survivalProbabilities, indexFactor));
}
/// <summary>
/// The par spread quotes are converted to points upfronts or quoted spreads.
/// <para>
/// The relevant discount curve and recovery rate curve must be stored in {@code ratesProvider}.
/// The credit curve is internally calibrated to par spread values.
/// </para>
/// <para>
/// {@code trades} must be sorted in ascending order in maturity and coherent to {@code quotes}.
/// </para>
/// <para>
/// The resultant quote is specified by {@code targetConvention}.
///
/// </para>
/// </summary>
/// <param name="trades"> the trades </param>
/// <param name="quotes"> the quotes </param>
/// <param name="ratesProvider"> the rates provider </param>
/// <param name="targetConvention"> the target convention </param>
/// <param name="refData"> the reference data </param>
/// <returns> the quotes </returns>
public virtual IList <CdsQuote> quotesFromParSpread(IList <ResolvedCdsTrade> trades, IList <CdsQuote> quotes, CreditRatesProvider ratesProvider, CdsQuoteConvention targetConvention, ReferenceData refData)
{
ArgChecker.noNulls(trades, "trades");
ArgChecker.noNulls(quotes, "quotes");
ArgChecker.notNull(ratesProvider, "ratesProvider");
ArgChecker.notNull(targetConvention, "targetConvention");
ArgChecker.notNull(refData, "refData");
int nNodes = trades.Count;
ArgChecker.isTrue(quotes.Count == nNodes, "trades and quotes must be the same size");
quotes.ForEach(q => ArgChecker.isTrue(q.QuoteConvention.Equals(CdsQuoteConvention.PAR_SPREAD), "quote must be par spread"));
//JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter:
IEnumerator <StandardId> legalEntities = trades.Select(t => t.Product.LegalEntityId).collect(Collectors.toSet()).GetEnumerator();
//JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops:
StandardId legalEntityId = legalEntities.next();
//JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops:
ArgChecker.isFalse(legalEntities.hasNext(), "legal entity must be common to trades");
//JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter:
IEnumerator <Currency> currencies = trades.Select(t => t.Product.Currency).collect(Collectors.toSet()).GetEnumerator();
//JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops:
Currency currency = currencies.next();
//JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops:
ArgChecker.isFalse(currencies.hasNext(), "currency must be common to trades");
LocalDate valuationDate = ratesProvider.ValuationDate;
CreditDiscountFactors discountFactors = ratesProvider.discountFactors(currency);
RecoveryRates recoveryRates = ratesProvider.recoveryRates(legalEntityId);
NodalCurve creditCurve = calibrator.calibrate(trades, DoubleArray.of(nNodes, q => quotes[q].QuotedValue), DoubleArray.filled(nNodes), CurveName.of("temp"), valuationDate, discountFactors, recoveryRates, refData);
CreditRatesProvider ratesProviderNew = ratesProvider.toImmutableCreditRatesProvider().toBuilder().creditCurves(ImmutableMap.of(Pair.of(legalEntityId, currency), LegalEntitySurvivalProbabilities.of(legalEntityId, IsdaCreditDiscountFactors.of(currency, valuationDate, creditCurve)))).build();
System.Func <ResolvedCdsTrade, CdsQuote> quoteValueFunction = createQuoteValueFunction(ratesProviderNew, targetConvention, refData);
//JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter:
ImmutableList <CdsQuote> result = trades.Select(c => quoteValueFunction(c)).collect(Collectors.collectingAndThen(Collectors.toList(), ImmutableList.copyOf));
return(result);
}
/// <summary>
/// Converts points upfront to quoted spread.
/// <para>
/// Thus {@code quote} must be {@code CdsQuoteConvention.POINTS_UPFRONT}.
/// </para>
/// <para>
/// The relevant discount curve and recovery rate curve must be stored in {@code ratesProvider}.
/// The credit curve is internally calibrated to convert one quote type to the other quote type.
///
/// </para>
/// </summary>
/// <param name="trade"> the trade </param>
/// <param name="quote"> the quote </param>
/// <param name="ratesProvider"> the rates provider </param>
/// <param name="refData"> the reference data </param>
/// <returns> the quote </returns>
public virtual CdsQuote quotedSpreadFromPointsUpfront(ResolvedCdsTrade trade, CdsQuote quote, CreditRatesProvider ratesProvider, ReferenceData refData)
{
ArgChecker.notNull(trade, "trade");
ArgChecker.notNull(quote, "quote");
ArgChecker.notNull(ratesProvider, "ratesProvider");
ArgChecker.notNull(refData, "refData");
ArgChecker.isTrue(quote.QuoteConvention.Equals(CdsQuoteConvention.POINTS_UPFRONT), "quote must be points upfront");
ResolvedCds product = trade.Product;
Currency currency = product.Currency;
StandardId legalEntityId = product.LegalEntityId;
LocalDate valuationDate = ratesProvider.ValuationDate;
NodalCurve creditCurve = calibrator.calibrate(ImmutableList.of(trade), DoubleArray.of(product.FixedRate), DoubleArray.of(quote.QuotedValue), CurveName.of("temp"), valuationDate, ratesProvider.discountFactors(currency), ratesProvider.recoveryRates(legalEntityId), refData);
CreditRatesProvider ratesProviderNew = ratesProvider.toImmutableCreditRatesProvider().toBuilder().creditCurves(ImmutableMap.of(Pair.of(legalEntityId, currency), LegalEntitySurvivalProbabilities.of(legalEntityId, IsdaCreditDiscountFactors.of(currency, valuationDate, creditCurve)))).build();
double sp = pricer.parSpread(trade, ratesProviderNew, refData);
return(CdsQuote.of(CdsQuoteConvention.QUOTED_SPREAD, sp));
}
internal override DoubleArray computedBucketedCs01(ResolvedCdsTrade trade, IList <ResolvedCdsTrade> bucketCds, CreditRatesProvider ratesProvider, ReferenceData refData)
{
checkCdsBucket(trade, bucketCds);
ResolvedCds product = trade.Product;
Currency currency = product.Currency;
StandardId legalEntityId = product.LegalEntityId;
LocalDate valuationDate = ratesProvider.ValuationDate;
ImmutableCreditRatesProvider immutableRatesProvider = ratesProvider.toImmutableCreditRatesProvider();
int nBucket = bucketCds.Count;
double[] res = new double[nBucket];
DoubleArray impSp = impliedSpread(bucketCds, ratesProvider, refData);
NodalCurve creditCurveBase = Calibrator.calibrate(bucketCds, impSp, DoubleArray.filled(nBucket), CurveName.of("baseImpliedCreditCurve"), valuationDate, ratesProvider.discountFactors(currency), ratesProvider.recoveryRates(legalEntityId), refData);
Pair <StandardId, Currency> lePair = Pair.of(legalEntityId, currency);
IsdaCreditDiscountFactors df = IsdaCreditDiscountFactors.of(currency, valuationDate, creditCurveBase);
CreditRatesProvider ratesProviderBase = immutableRatesProvider.toBuilder().creditCurves(ImmutableMap.of(lePair, LegalEntitySurvivalProbabilities.of(legalEntityId, df))).build();
double pvBase = Pricer.presentValueOnSettle(trade, ratesProviderBase, PriceType.DIRTY, refData).Amount;
for (int i = 0; i < nBucket; ++i)
{
double[] bumpedSp = impSp.toArray();
bumpedSp[i] += bumpAmount;
NodalCurve creditCurveBump = Calibrator.calibrate(bucketCds, DoubleArray.ofUnsafe(bumpedSp), DoubleArray.filled(nBucket), CurveName.of("bumpedImpliedCreditCurve"), valuationDate, ratesProvider.discountFactors(currency), ratesProvider.recoveryRates(legalEntityId), refData);
IsdaCreditDiscountFactors dfBump = IsdaCreditDiscountFactors.of(currency, valuationDate, creditCurveBump);
CreditRatesProvider ratesProviderBump = immutableRatesProvider.toBuilder().creditCurves(ImmutableMap.of(lePair, LegalEntitySurvivalProbabilities.of(legalEntityId, dfBump))).build();
double pvBumped = Pricer.presentValueOnSettle(trade, ratesProviderBump, PriceType.DIRTY, refData).Amount;
res[i] = (pvBumped - pvBase) / bumpAmount;
}
return(DoubleArray.ofUnsafe(res));
}
//-------------------------------------------------------------------------
public override CurrencyAmount parallelCs01(ResolvedCdsTrade trade, IList <ResolvedCdsTrade> bucketCds, CreditRatesProvider ratesProvider, ReferenceData refData)
{
checkCdsBucket(trade, bucketCds);
ResolvedCds product = trade.Product;
Currency currency = product.Currency;
StandardId legalEntityId = product.LegalEntityId;
LocalDate valuationDate = ratesProvider.ValuationDate;
ImmutableCreditRatesProvider immutableRatesProvider = ratesProvider.toImmutableCreditRatesProvider();
int nBucket = bucketCds.Count;
DoubleArray impSp = impliedSpread(bucketCds, ratesProvider, refData);
NodalCurve creditCurveBase = Calibrator.calibrate(bucketCds, impSp, DoubleArray.filled(nBucket), CurveName.of("baseImpliedCreditCurve"), valuationDate, ratesProvider.discountFactors(currency), ratesProvider.recoveryRates(legalEntityId), refData);
Pair <StandardId, Currency> lePair = Pair.of(legalEntityId, currency);
IsdaCreditDiscountFactors df = IsdaCreditDiscountFactors.of(currency, valuationDate, creditCurveBase);
CreditRatesProvider ratesProviderBase = immutableRatesProvider.toBuilder().creditCurves(ImmutableMap.of(lePair, LegalEntitySurvivalProbabilities.of(legalEntityId, df))).build();
CurrencyAmount pvBase = Pricer.presentValueOnSettle(trade, ratesProviderBase, PriceType.DIRTY, refData);
DoubleArray bumpedSp = DoubleArray.of(nBucket, i => impSp.get(i) + bumpAmount);
NodalCurve creditCurveBump = Calibrator.calibrate(bucketCds, bumpedSp, DoubleArray.filled(nBucket), CurveName.of("bumpedImpliedCreditCurve"), valuationDate, ratesProvider.discountFactors(currency), ratesProvider.recoveryRates(legalEntityId), refData);
IsdaCreditDiscountFactors dfBump = IsdaCreditDiscountFactors.of(currency, valuationDate, creditCurveBump);
CreditRatesProvider ratesProviderBump = immutableRatesProvider.toBuilder().creditCurves(ImmutableMap.of(lePair, LegalEntitySurvivalProbabilities.of(legalEntityId, dfBump))).build();
CurrencyAmount pvBumped = Pricer.presentValueOnSettle(trade, ratesProviderBump, PriceType.DIRTY, refData);
return(CurrencyAmount.of(currency, (pvBumped.Amount - pvBase.Amount) / bumpAmount));
}
/// <summary>
/// Calculates the present value sensitivity of the trade.
/// <para>
/// The present value sensitivity of the trade is the sensitivity of present value to the underlying curves.
///
/// </para>
/// </summary>
/// <param name="trade"> the trade </param>
/// <param name="ratesProvider"> the rates provider </param>
/// <param name="refData"> the reference data </param>
/// <returns> the present value sensitivity </returns>
public virtual PointSensitivities presentValueSensitivity(ResolvedCdsTrade trade, CreditRatesProvider ratesProvider, ReferenceData refData)
{
PointSensitivityBuilder pvSensiProduct = productPricer.presentValueSensitivity(trade.Product, ratesProvider, ratesProvider.ValuationDate, refData);
if (!trade.UpfrontFee.Present)
{
return(pvSensiProduct.build());
}
Payment upfront = trade.UpfrontFee.get();
PointSensitivityBuilder pvUpfront = upfrontPricer.presentValueSensitivity(upfront, ratesProvider.discountFactors(upfront.Currency).toDiscountFactors());
return(pvSensiProduct.combinedWith(pvUpfront).build());
}
internal override DoubleArray computedBucketedCs01(ResolvedCdsTrade trade, IList <ResolvedCdsTrade> bucketCds, CreditRatesProvider ratesProvider, ReferenceData refData)
{
checkCdsBucket(trade, bucketCds);
ResolvedCds product = trade.Product;
Currency currency = product.Currency;
StandardId legalEntityId = product.LegalEntityId;
LocalDate valuationDate = ratesProvider.ValuationDate;
int nBucket = bucketCds.Count;
DoubleArray impSp = impliedSpread(bucketCds, ratesProvider, refData);
NodalCurve creditCurveBase = Calibrator.calibrate(bucketCds, impSp, DoubleArray.filled(nBucket), CurveName.of("baseImpliedCreditCurve"), valuationDate, ratesProvider.discountFactors(currency), ratesProvider.recoveryRates(legalEntityId), refData);
IsdaCreditDiscountFactors df = IsdaCreditDiscountFactors.of(currency, valuationDate, creditCurveBase);
CreditRatesProvider ratesProviderBase = ratesProvider.toImmutableCreditRatesProvider().toBuilder().creditCurves(ImmutableMap.of(Pair.of(legalEntityId, currency), LegalEntitySurvivalProbabilities.of(legalEntityId, df))).build();
double[][] res = new double[nBucket][];
PointSensitivities pointPv = Pricer.presentValueOnSettleSensitivity(trade, ratesProviderBase, refData);
DoubleArray vLambda = ratesProviderBase.singleCreditCurveParameterSensitivity(pointPv, legalEntityId, currency).Sensitivity;
for (int i = 0; i < nBucket; i++)
{
PointSensitivities pointSp = Pricer.parSpreadSensitivity(bucketCds[i], ratesProviderBase, refData);
res[i] = ratesProviderBase.singleCreditCurveParameterSensitivity(pointSp, legalEntityId, currency).Sensitivity.toArray();
}
DoubleMatrix jacT = MATRIX_ALGEBRA.getTranspose(DoubleMatrix.ofUnsafe(res));
LUDecompositionResult luRes = DECOMPOSITION.apply(jacT);
DoubleArray vS = luRes.solve(vLambda);
return(vS);
}