FedFundOvernightCompounding.java

package org.drip.sample.fedfund;

import java.util.*;

import org.drip.analytics.cashflow.CompositePeriod;
import org.drip.analytics.date.*;
import org.drip.analytics.daycount.Convention;
import org.drip.analytics.output.CompositePeriodCouponMetrics;
import org.drip.analytics.support.*;
import org.drip.function.r1tor1.*;
import org.drip.market.definition.OvernightIndex;
import org.drip.market.otc.*;
import org.drip.param.creator.*;
import org.drip.param.market.*;
import org.drip.param.period.*;
import org.drip.param.valuation.*;
import org.drip.product.creator.*;
import org.drip.product.definition.CalibratableComponent;
import org.drip.product.rates.*;
import org.drip.service.env.EnvManager;
import org.drip.spline.basis.PolynomialFunctionSetParams;
import org.drip.spline.params.*;
import org.drip.spline.stretch.*;
import org.drip.state.creator.*;
import org.drip.state.discount.*;
import org.drip.state.estimator.LatentStateStretchBuilder;
import org.drip.state.identifier.*;
import org.drip.state.inference.*;

/*
 * -*- mode: java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 */

/*!
 * Copyright (C) 2019 Lakshmi Krishnamurthy
 * Copyright (C) 2018 Lakshmi Krishnamurthy
 * Copyright (C) 2017 Lakshmi Krishnamurthy
 * Copyright (C) 2016 Lakshmi Krishnamurthy
 * Copyright (C) 2015 Lakshmi Krishnamurthy
 * Copyright (C) 2014 Lakshmi Krishnamurthy
 * 
 *  This file is part of DROP, an open-source library targeting risk, transaction costs, exposure, margin
 *  	calculations, valuation adjustment, and portfolio construction within and across fixed income,
 *  	credit, commodity, equity, FX, and structured products.
 *  
 *  	https://lakshmidrip.github.io/DROP/
 *  
 *  DROP is composed of three modules:
 *  
 *  - DROP Analytics Core - https://lakshmidrip.github.io/DROP-Analytics-Core/
 *  - DROP Portfolio Core - https://lakshmidrip.github.io/DROP-Portfolio-Core/
 *  - DROP Numerical Core - https://lakshmidrip.github.io/DROP-Numerical-Core/
 * 
 * 	DROP Analytics Core implements libraries for the following:
 * 	- Fixed Income Analytics
 * 	- Asset Backed Analytics
 * 	- XVA Analytics
 * 	- Exposure and Margin Analytics
 * 
 * 	DROP Portfolio Core implements libraries for the following:
 * 	- Asset Allocation Analytics
 * 	- Transaction Cost Analytics
 * 
 * 	DROP Numerical Core implements libraries for the following:
 * 	- Statistical Learning
 * 	- Numerical Optimizer
 * 	- Spline Builder
 * 	- Algorithm Support
 * 
 * 	Documentation for DROP is Spread Over:
 * 
 * 	- Main                     => https://lakshmidrip.github.io/DROP/
 * 	- Wiki                     => https://github.com/lakshmiDRIP/DROP/wiki
 * 	- GitHub                   => https://github.com/lakshmiDRIP/DROP
 * 	- Repo Layout Taxonomy     => https://github.com/lakshmiDRIP/DROP/blob/master/Taxonomy.md
 * 	- Javadoc                  => https://lakshmidrip.github.io/DROP/Javadoc/index.html
 * 	- Technical Specifications => https://github.com/lakshmiDRIP/DROP/tree/master/Docs/Internal
 * 	- Release Versions         => https://lakshmidrip.github.io/DROP/version.html
 * 	- Community Credits        => https://lakshmidrip.github.io/DROP/credits.html
 * 	- Issues Catalog           => https://github.com/lakshmiDRIP/DROP/issues
 * 	- JUnit                    => https://lakshmidrip.github.io/DROP/junit/index.html
 * 	- Jacoco                   => https://lakshmidrip.github.io/DROP/jacoco/index.html
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *   	you may not use this file except in compliance with the License.
 *   
 *  You may obtain a copy of the License at
 *  	http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  	distributed under the License is distributed on an "AS IS" BASIS,
 *  	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  
 *  See the License for the specific language governing permissions and
 *  	limitations under the License.
 */

/**
 * <i>FedFundOvernightCompounding</i> demonstrates in detail the methodology behind the overnight compounding
 * used in the Overnight fund Floating Stream Accrual.
 *  
 * <br><br>
 *  <ul>
 *		<li><b>Module </b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/AnalyticsCore.md">Analytics Core Module</a></li>
 *		<li><b>Library</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/FixedIncomeAnalyticsLibrary.md">Fixed Income Analytics Library</a></li>
 *		<li><b>Project</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/sample/README.md">Sample</a></li>
 *		<li><b>Package</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/sample/fedfund/README.md">Fed Fund Analytics</a></li>
 *  </ul>
 * <br><br>
 * 
 * @author Lakshmi Krishnamurthy
 */

public class FedFundOvernightCompounding {

	private static final FixFloatComponent OTCOISFixFloat (
		final JulianDate dtSpot,
		final String strCurrency,
		final String strMaturityTenor,
		final double dblCoupon)
	{
		FixedFloatSwapConvention ffConv = OvernightFixedFloatContainer.FundConventionFromJurisdiction (
			strCurrency
		);

		return ffConv.createFixFloatComponent (
			dtSpot,
			strMaturityTenor,
			dblCoupon,
			0.,
			1.
		);
	}

	/*
	 * Construct the Array of Deposit Instruments from the given set of parameters
	 * 
	 *  	USE WITH CARE: This sample ignores errors and does not handle exceptions.
	 */

	private static final SingleStreamComponent[] DepositInstrumentsFromMaturityDays (
		final JulianDate dtEffective,
		final String strCurrency,
		final int[] aiDay)
		throws Exception
	{
		SingleStreamComponent[] aDeposit = new SingleStreamComponent[aiDay.length];

		for (int i = 0; i < aiDay.length; ++i)
			aDeposit[i] = SingleStreamComponentBuilder.Deposit (
				dtEffective,
				dtEffective.addBusDays (
					aiDay[i],
					strCurrency
				),
				OvernightLabel.Create (
					strCurrency
				)
			);

		return aDeposit;
	}

	/*
	 * Construct the Array of Overnight Index Instruments from the given set of parameters
	 * 
	 *  	USE WITH CARE: This sample ignores errors and does not handle exceptions.
	 */

	private static final FixFloatComponent[] OISFromMaturityTenor (
		final JulianDate dtSpot,
		final String strCurrency,
		final String[] astrMaturityTenor,
		final double[] adblCoupon)
		throws Exception
	{
		FixFloatComponent[] aOIS = new FixFloatComponent[astrMaturityTenor.length];

		for (int i = 0; i < astrMaturityTenor.length; ++i)
			aOIS[i] = OTCOISFixFloat (
				dtSpot,
				strCurrency,
				astrMaturityTenor[i],
				adblCoupon[i]
			);

		return aOIS;
	}

	/*
	 * Construct the Array of Overnight Index Future Instruments from the given set of parameters
	 * 
	 *  	USE WITH CARE: This sample ignores errors and does not handle exceptions.
	 */

	private static final FixFloatComponent[] OISFuturesFromMaturityTenor (
		final JulianDate dtSpot,
		final String strCurrency,
		final String[] astrStartTenor,
		final String[] astrMaturityTenor,
		final double[] adblCoupon)
		throws Exception
	{
		FixFloatComponent[] aOISFutures = new FixFloatComponent[astrMaturityTenor.length];

		for (int i = 0; i < astrMaturityTenor.length; ++i)
			aOISFutures[i] = OTCOISFixFloat (
				dtSpot.addTenor (astrStartTenor[i]),
				strCurrency,
				astrMaturityTenor[i],
				adblCoupon[i]
			);

		return aOISFutures;
	}

	private static final MergedDiscountForwardCurve CustomOISCurveBuilderSample (
		final JulianDate dtSpot,
		final String strCurrency)
		throws Exception
	{
		/*
		 * Construct the Array of Deposit Instruments and their Quotes from the given set of parameters
		 */

		SingleStreamComponent[] aDepositComp = DepositInstrumentsFromMaturityDays (
			dtSpot,
			strCurrency,
			new int[] {
				1, 2, 3
			}
		);

		double[] adblDepositQuote = new double[] {
			0.0004, 0.0004, 0.0004		 // Deposit
		};

		/*
		 * Construct the Deposit Instrument Set Stretch Builder
		 */

		LatentStateStretchSpec depositStretch = LatentStateStretchBuilder.ForwardFundingStretchSpec (
			"   DEPOSIT   ",
			aDepositComp,
			"ForwardRate",
			adblDepositQuote
		);

		/*
		 * Construct the Array of Short End OIS Instruments and their Quotes from the given set of parameters
		 */

		double[] adblShortEndOISQuote = new double[] {
			0.00070,    //   1W
			0.00069,    //   2W
			0.00078,    //   3W
			0.00074     //   1M
		};

		CalibratableComponent[] aShortEndOISComp = OISFromMaturityTenor (
			dtSpot,
			strCurrency,
			new java.lang.String[] {
				"1W", "2W", "3W", "1M"
			},
			adblShortEndOISQuote
		);

		/*
		 * Construct the Short End OIS Instrument Set Stretch Builder
		 */

		LatentStateStretchSpec oisShortEndStretch = LatentStateStretchBuilder.ForwardFundingStretchSpec (
			"SHORT END OIS",
			aShortEndOISComp,
			"SwapRate",
			adblShortEndOISQuote
		);

		/*
		 * Construct the Array of OIS Futures Instruments and their Quotes from the given set of parameters
		 */

		double[] adblOISFutureQuote = new double[] {
			 0.00046,    //   1M x 1M
			 0.00016,    //   2M x 1M
			-0.00007,    //   3M x 1M
			-0.00013,    //   4M x 1M
			-0.00014     //   5M x 1M
		};

		CalibratableComponent[] aOISFutureComp = OISFuturesFromMaturityTenor (
			dtSpot,
			strCurrency,
			new java.lang.String[] {
				"1M", "2M", "3M", "4M", "5M"
			},
			new java.lang.String[] {
				"1M", "1M", "1M", "1M", "1M"
			},
			adblOISFutureQuote
		);

		/*
		 * Construct the OIS Future Instrument Set Stretch Builder
		 */

		LatentStateStretchSpec oisFutureStretch = LatentStateStretchBuilder.ForwardFundingStretchSpec (
			" OIS FUTURE  ",
			aOISFutureComp,
			"SwapRate",
			adblOISFutureQuote
		);

		/*
		 * Construct the Array of Long End OIS Instruments and their Quotes from the given set of parameters
		 */

		double[] adblLongEndOISQuote = new double[] {
			0.00002,    //  15M
			0.00008,    //  18M
			0.00021,    //  21M
			0.00036,    //   2Y
			0.00127,    //   3Y
			0.00274,    //   4Y
			0.00456,    //   5Y
			0.00647,    //   6Y
			0.00827,    //   7Y
			0.00996,    //   8Y
			0.01147,    //   9Y
			0.01280,    //  10Y
			0.01404,    //  11Y
			0.01516,    //  12Y
			0.01764,    //  15Y
			0.01939,    //  20Y
			0.02003,    //  25Y
			0.02038     //  30Y
		};

		CalibratableComponent[] aLongEndOISComp = OISFromMaturityTenor (
			dtSpot,
			strCurrency,
			new java.lang.String[] {
				"15M", "18M", "21M", "2Y", "3Y", "4Y", "5Y", "6Y", "7Y", "8Y", "9Y", "10Y", "11Y", "12Y", "15Y", "20Y", "25Y", "30Y"
			},
			adblLongEndOISQuote
		);

		/*
		 * Construct the Long End OIS Instrument Set Stretch Builder
		 */

		LatentStateStretchSpec oisLongEndStretch = LatentStateStretchBuilder.ForwardFundingStretchSpec (
			"LONG END OIS ",
			aLongEndOISComp,
			"SwapRate",
			adblLongEndOISQuote
		);

		LatentStateStretchSpec[] aStretchSpec = new LatentStateStretchSpec[] {
			depositStretch,
			oisShortEndStretch,
			oisFutureStretch,
			oisLongEndStretch
		};

		/*
		 * Set up the Linear Curve Calibrator using the following parameters:
		 * 	- Cubic Exponential Mixture Basis Spline Set
		 * 	- Ck = 2, Segment Curvature Penalty = 2
		 * 	- Quadratic Rational Shape Controller
		 * 	- Natural Boundary Setting
		 */

		LinearLatentStateCalibrator lcc = new LinearLatentStateCalibrator (
			new SegmentCustomBuilderControl (
				MultiSegmentSequenceBuilder.BASIS_SPLINE_POLYNOMIAL,
				new PolynomialFunctionSetParams (4),
				SegmentInelasticDesignControl.Create (
					2,
					2
				),
				new ResponseScalingShapeControl (
					true,
					new QuadraticRationalShapeControl (0.)
				),
				null
			),
			BoundarySettings.NaturalStandard(),
			MultiSegmentSequence.CALIBRATE,
			null,
			null
		);

		/*
		 * Construct the Shape Preserving Discount Curve by applying the linear curve calibrator to the array
		 *  of Cash and Swap Stretches.
		 */

		return ScenarioDiscountCurveBuilder.ShapePreservingDFBuild (
			strCurrency,
			lcc,
			aStretchSpec,
			new ValuationParams (
				dtSpot,
				dtSpot,
				strCurrency
			),
			null,
			null,
			null,
			1.
		);
	}

	private static final LatentStateFixingsContainer SetFlatOvernightFixings (
		final JulianDate dtStart,
		final JulianDate dtEnd,
		final JulianDate dtValue,
		final ForwardLabel fri,
		final double dblFlatFixing,
		final double dblNotional)
		throws Exception
	{
		LatentStateFixingsContainer lsfc = new LatentStateFixingsContainer();

		double dblAccount = 1.;

		lsfc.add (
			dtStart,
			fri,
			dblFlatFixing
		);

		int iPrevDate = dtStart.julian();

		JulianDate dt = dtStart.addDays (1);

		while (dt.julian() <= dtEnd.julian()) {
			lsfc.add (
				dt,
				fri,
				dblFlatFixing
			);

			if (dt.julian() <= dtValue.julian()) {
				double dblAccrualFraction = Convention.YearFraction (
					iPrevDate,
					dt.julian(),
					"Act/360",
					false,
					null,
					"USD"
				);

				dblAccount *= (1. + dblFlatFixing * dblAccrualFraction);
			}

			iPrevDate = dt.julian();

			dt = dt.addBusDays (
				1,
				"USD"
			);
		}

		System.out.println ("\tManual Calc Float Accrued (Geometric Compounding): " + (dblAccount - 1.) * dblNotional);

		double dblDCF = (dtValue.julian() - dtStart.julian()) / 360.;

		System.out.println ("\tManual Calc Float Accrued (Arithmetic Compounding): " +
			(dblDCF * dblNotional * dblFlatFixing));

		System.out.println ("\tManual Calc Float Accrued DCF (Arithmetic Compounding): " + dblDCF);

		return lsfc;
	}

	public static final void main (
		final String[] astrArgs)
		throws Exception
	{
		/*
		 * Initialize the Credit Analytics Library
		 */

		EnvManager.InitEnv ("");

		String strCurrency = "USD";

		JulianDate dtToday = DateUtil.CreateFromYMD (
			2015,
			DateUtil.JANUARY,
			5
		);

		MergedDiscountForwardCurve dc = CustomOISCurveBuilderSample (
			dtToday,
			strCurrency
		);

		JulianDate dtCustomOISStart = dtToday.subtractTenor ("2M");

		JulianDate dtCustomOISMaturity = dtToday.addTenor ("4M");

		OvernightLabel fri = OvernightLabel.Create (
			strCurrency
		);

		FundingLabel fundingLabel = FundingLabel.Standard (strCurrency);

		UnitCouponAccrualSetting ucasFixed = new UnitCouponAccrualSetting (
			360,
			"Act/360",
			false,
			"Act/360",
			false,
			strCurrency,
			false,
			CompositePeriodBuilder.ACCRUAL_COMPOUNDING_RULE_GEOMETRIC
		);

		ComposableFloatingUnitSetting cfusFloatingArithmetic = new ComposableFloatingUnitSetting (
			"ON",
			CompositePeriodBuilder.EDGE_DATE_SEQUENCE_OVERNIGHT,
			null,
			OvernightLabel.Create (
				strCurrency
			),
			CompositePeriodBuilder.REFERENCE_PERIOD_IN_ADVANCE,
			0.
		);

		ComposableFloatingUnitSetting cfusFloatingGeometric = new ComposableFloatingUnitSetting (
			"ON",
			CompositePeriodBuilder.EDGE_DATE_SEQUENCE_OVERNIGHT,
			null,
			ForwardLabel.Create (
				new OvernightIndex (
					strCurrency + "FedFund",
					"FedFund",
					strCurrency,
					"Act/360",
					strCurrency,
					"ON",
					0,
					CompositePeriodBuilder.ACCRUAL_COMPOUNDING_RULE_GEOMETRIC
				),
				"ON"
			),
			CompositePeriodBuilder.REFERENCE_PERIOD_IN_ADVANCE,
			0.
		);

		ComposableFixedUnitSetting cfusFixed = new ComposableFixedUnitSetting (
			"6M",
			CompositePeriodBuilder.EDGE_DATE_SEQUENCE_REGULAR,
			null,
			0.,
			0.,
			strCurrency
		);

		CompositePeriodSetting cpsFloating = new CompositePeriodSetting (
			360,
			"ON",
			strCurrency,
			null,
			-1.,
			null,
			null,
			null,
			null
		);

		CompositePeriodSetting cpsFixed = new CompositePeriodSetting (
			2,
			"6M",
			strCurrency,
			null,
			1.,
			null,
			null,
			null,
			null
		);

		List<Integer> lsFloatingStreamEdgeDate = CompositePeriodBuilder.RegularEdgeDates (
			dtCustomOISStart,
			"6M",
			"6M",
			null
		);

		List<Integer> lsFixedStreamEdgeDate = CompositePeriodBuilder.RegularEdgeDates (
			dtCustomOISStart,
			"6M",
			"6M",
			null
		);

		Stream floatStreamGeometric = new Stream (
			CompositePeriodBuilder.FloatingCompositeUnit (
				lsFloatingStreamEdgeDate,
				cpsFloating,
				cfusFloatingGeometric
			)
		);

		List<CompositePeriod> lsArithmeticFloatPeriods = CompositePeriodBuilder.FloatingCompositeUnit (
			lsFloatingStreamEdgeDate,
			cpsFloating,
			cfusFloatingArithmetic
		);

		Stream floatStreamArithmetic = new Stream (lsArithmeticFloatPeriods);

		Stream fixStream = new Stream (
			CompositePeriodBuilder.FixedCompositeUnit (
				lsFixedStreamEdgeDate,
				cpsFixed,
				ucasFixed,
				cfusFixed
			)
		);

		FixFloatComponent oisArithmetic = new FixFloatComponent (
			fixStream,
			floatStreamArithmetic,
			new CashSettleParams (
				0,
				strCurrency,
				0
			)
		);

		FixFloatComponent oisGeometric = new FixFloatComponent (
			fixStream,
			floatStreamGeometric,
			new CashSettleParams (
				0,
				strCurrency,
				0
			)
		);

		CurveSurfaceQuoteContainer mktParams = MarketParamsBuilder.Create (
			dc,
			null,
			null,
			null,
			null,
			null,
			SetFlatOvernightFixings (
				dtCustomOISStart,
				dtCustomOISMaturity,
				dtToday,
				fri,
				0.003,
				-1.
			)
		);

		ValuationParams valParams = new ValuationParams (
			dtToday,
			dtToday,
			strCurrency
		);

		Map<String, Double> mapOISGeometricOutput = oisGeometric.value (
			valParams,
			null,
			mktParams,
			null
		);

		System.out.println ("\tMachine Calc Float Accrued (Geometric Compounding): " + mapOISGeometricOutput.get ("FloatAccrued"));

		Map<String, Double> mapOISArithmeticOutput = oisArithmetic.value (
			valParams,
			null,
			mktParams,
			null
		);

		System.out.println ("\tMachine Calc Float Accrued (Arithmetic Compounding): " + mapOISArithmeticOutput.get ("FloatAccrued"));

		System.out.println ("\tMachine Calc Float Accrued DCF (Arithmetic Compounding): " +
			Math.abs (mapOISGeometricOutput.get ("FloatAccrued") / mapOISGeometricOutput.get ("ResetRate")));

		CompositePeriod period = lsArithmeticFloatPeriods.get (0);

		CompositePeriodCouponMetrics pcmArithmetic = floatStreamArithmetic.coupon (
			period.endDate(),
			valParams,
			mktParams
		);

		System.out.println ("\tPeriod #1 Coupon Without Convexity Adjustment: " + pcmArithmetic.rate());

		double dblOISVol = 0.3;
		double dblUSDFundingVol = 0.3;
		double dblUSDFundingUSDOISCorrelation = 0.3;

		mktParams.setForwardVolatility (
			ScenarioDeterministicVolatilityBuilder.FlatForward (
				valParams.valueDate(),
				VolatilityLabel.Standard (fri),
				fri.currency(),
				dblOISVol
			)
		);

		mktParams.setFundingVolatility (
			ScenarioDeterministicVolatilityBuilder.FlatForward (
				valParams.valueDate(),
				VolatilityLabel.Standard (fundingLabel),
				fri.currency(),
				dblUSDFundingVol
			)
		);

		mktParams.setForwardFundingCorrelation (
			fri,
			fundingLabel,
			new FlatUnivariate (dblUSDFundingUSDOISCorrelation)
		);

		System.out.println (
			"\tPeriod #1 Coupon With Convexity Adjustment: " + floatStreamArithmetic.coupon (
				period.endDate(),
				valParams,
				mktParams
			).rate()
		);

		EnvManager.TerminateEnv();
	}
}