def test_FinSABR():
strikes = np.linspace(0.01, 0.06, 100)
alpha = 0.060277
beta = 0.5
rho = 0.2097
nu = 0.75091
model1 = FinModelSABR(alpha, beta, rho, nu)
alpha = 0.058484
beta = 0.5
rho = 0.20568
nu = 0.79647
model2 = FinModelSABR(alpha, beta, rho, nu)
f = 0.0350
T = 1.0
vols1 = model1.blackVol(f, strikes, T)
vols2 = model2.blackVol(f, strikes, T)
if PLOT_GRAPHS:
plt.figure()
plt.plot(strikes, vols1)
plt.plot(strikes, vols2)
plt.title("SABR")
def test_FinIborCapFloor():
todayDate = FinDate(20, 6, 2019)
valuationDate = todayDate
startDate = todayDate.addWeekDays(2)
maturityDate = startDate.addTenor("1Y")
liborCurve = test_FinIborDepositsAndSwaps(todayDate)
# The capfloor has begun
# lastFixing = 0.028
##########################################################################
# COMPARISON OF MODELS
##########################################################################
strikes = np.linspace(0.02, 0.08, 5)
testCases.header("LABEL", "STRIKE", "BLK", "BLK_SHFTD", "SABR",
"SABR_SHFTD", "HW", "BACH")
model1 = FinModelBlack(0.20)
model2 = FinModelBlackShifted(0.25, 0.0)
model3 = FinModelSABR(0.013, 0.5, 0.5, 0.5)
model4 = FinModelSABRShifted(0.013, 0.5, 0.5, 0.5, -0.008)
model5 = FinModelRatesHW(0.30, 0.01)
model6 = FinModelBachelier(0.01)
for k in strikes:
capFloorType = FinCapFloorTypes.CAP
capfloor = FinIborCapFloor(startDate, maturityDate, capFloorType, k)
cvalue1 = capfloor.value(valuationDate, liborCurve, model1)
cvalue2 = capfloor.value(valuationDate, liborCurve, model2)
cvalue3 = capfloor.value(valuationDate, liborCurve, model3)
cvalue4 = capfloor.value(valuationDate, liborCurve, model4)
cvalue5 = capfloor.value(valuationDate, liborCurve, model5)
cvalue6 = capfloor.value(valuationDate, liborCurve, model6)
testCases.print("CAP", k, cvalue1, cvalue2, cvalue3, cvalue4, cvalue5, cvalue6)
testCases.header("LABEL", "STRIKE", "BLK", "BLK_SHFTD", "SABR",
"SABR_SHFTD", "HW", "BACH")
for k in strikes:
capFloorType = FinCapFloorTypes.FLOOR
capfloor = FinIborCapFloor(startDate, maturityDate, capFloorType, k)
fvalue1 = capfloor.value(valuationDate, liborCurve, model1)
fvalue2 = capfloor.value(valuationDate, liborCurve, model2)
fvalue3 = capfloor.value(valuationDate, liborCurve, model3)
fvalue4 = capfloor.value(valuationDate, liborCurve, model4)
fvalue5 = capfloor.value(valuationDate, liborCurve, model5)
fvalue6 = capfloor.value(valuationDate, liborCurve, model6)
testCases.print("FLR", k, fvalue1, fvalue2, fvalue3, fvalue4, fvalue5, fvalue6)
###############################################################################
# PUT CALL CHECK
###############################################################################
testCases.header("LABEL", "STRIKE", "BLK", "BLK_SHFTD", "SABR",
"SABR SHFTD", "HW", "BACH")
for k in strikes:
capFloorType = FinCapFloorTypes.CAP
capfloor = FinIborCapFloor(startDate, maturityDate, capFloorType, k)
cvalue1 = capfloor.value(valuationDate, liborCurve, model1)
cvalue2 = capfloor.value(valuationDate, liborCurve, model2)
cvalue3 = capfloor.value(valuationDate, liborCurve, model3)
cvalue4 = capfloor.value(valuationDate, liborCurve, model4)
cvalue5 = capfloor.value(valuationDate, liborCurve, model5)
cvalue6 = capfloor.value(valuationDate, liborCurve, model6)
capFloorType = FinCapFloorTypes.FLOOR
capfloor = FinIborCapFloor(startDate, maturityDate, capFloorType, k)
fvalue1 = capfloor.value(valuationDate, liborCurve, model1)
fvalue2 = capfloor.value(valuationDate, liborCurve, model2)
fvalue3 = capfloor.value(valuationDate, liborCurve, model3)
fvalue4 = capfloor.value(valuationDate, liborCurve, model4)
fvalue5 = capfloor.value(valuationDate, liborCurve, model5)
fvalue6 = capfloor.value(valuationDate, liborCurve, model6)
pcvalue1 = cvalue1 - fvalue1
pcvalue2 = cvalue2 - fvalue2
pcvalue3 = cvalue3 - fvalue3
pcvalue4 = cvalue4 - fvalue4
pcvalue5 = cvalue5 - fvalue5
pcvalue6 = cvalue6 - fvalue6
testCases.print("PUT_CALL", k, pcvalue1, pcvalue2, pcvalue3,
pcvalue4, pcvalue5, pcvalue6)
def test_FinLiborSwaptionQLExample():
# valuationDate = FinDate(28, 2, 2014)
settlementDate = FinDate(4, 3, 2014)
depoDCCType = FinDayCountTypes.THIRTY_E_360_ISDA
depos = []
depo = FinLiborDeposit(settlementDate, "1W", 0.0023, depoDCCType)
depos.append(depo)
depo = FinLiborDeposit(settlementDate, "1M", 0.0023, depoDCCType)
depos.append(depo)
depo = FinLiborDeposit(settlementDate, "3M", 0.0023, depoDCCType)
depos.append(depo)
depo = FinLiborDeposit(settlementDate, "6M", 0.0023, depoDCCType)
depos.append(depo)
# No convexity correction provided so I omit interest rate futures
swaps = []
accType = FinDayCountTypes.ACT_365F
fixedFreqType = FinFrequencyTypes.SEMI_ANNUAL
swapType = FinLiborSwapTypes.PAYER
swap = FinLiborSwap(settlementDate, "3Y", swapType, 0.00790, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "4Y", swapType, 0.01200, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "5Y", swapType, 0.01570, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "6Y", swapType, 0.01865, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "7Y", swapType, 0.02160, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "8Y", swapType, 0.02350, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "9Y", swapType, 0.02540, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "10Y", swapType, 0.0273, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "15Y", swapType, 0.0297, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "20Y", swapType, 0.0316, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "25Y", swapType, 0.0335, fixedFreqType,
accType)
swaps.append(swap)
swap = FinLiborSwap(settlementDate, "30Y", swapType, 0.0354, fixedFreqType,
accType)
swaps.append(swap)
liborCurve = FinLiborCurve(settlementDate, depos, [], swaps,
FinInterpTypes.LINEAR_ZERO_RATES)
exerciseDate = settlementDate.addTenor("5Y")
swapMaturityDate = exerciseDate.addTenor("5Y")
swapFixedCoupon = 0.040852
swapFixedFrequencyType = FinFrequencyTypes.SEMI_ANNUAL
swapFixedDayCountType = FinDayCountTypes.THIRTY_E_360_ISDA
swapFloatFrequencyType = FinFrequencyTypes.QUARTERLY
swapFloatDayCountType = FinDayCountTypes.ACT_360
swapNotional = 1000000
swaptionType = FinLiborSwapTypes.PAYER
swaption = FinLiborSwaption(settlementDate, exerciseDate, swapMaturityDate,
swaptionType, swapFixedCoupon,
swapFixedFrequencyType, swapFixedDayCountType,
swapNotional, swapFloatFrequencyType,
swapFloatDayCountType)
testCases.header("MODEL", "VALUE")
model = FinModelBlack(0.1533)
v = swaption.value(settlementDate, liborCurve, model)
testCases.print(model.__class__, v)
model = FinModelBlackShifted(0.1533, -0.008)
v = swaption.value(settlementDate, liborCurve, model)
testCases.print(model.__class__, v)
model = FinModelSABR(0.132, 0.5, 0.5, 0.5)
v = swaption.value(settlementDate, liborCurve, model)
testCases.print(model.__class__, v)
model = FinModelSABRShifted(0.352, 0.5, 0.15, 0.15, -0.005)
v = swaption.value(settlementDate, liborCurve, model)
testCases.print(model.__class__, v)
model = FinModelRatesHW(0.010000000, 0.00000000001)
v = swaption.value(settlementDate, liborCurve, model)
testCases.print(model.__class__, v)
def testFinLiborSwaptionModels():
##########################################################################
# COMPARISON OF MODELS
##########################################################################
valuationDate = FinDate(2011, 1, 1)
liborCurve = test_FinLiborDepositsAndSwaps(valuationDate)
exerciseDate = FinDate(2012, 1, 1)
swapMaturityDate = FinDate(2017, 1, 1)
swapFixedFrequencyType = FinFrequencyTypes.SEMI_ANNUAL
swapFixedDayCountType = FinDayCountTypes.ACT_365F
strikes = np.linspace(0.02, 0.08, 10)
testCases.header("LAB", "STRIKE", "BLK", "BLK_SHFT", "SABR", "SABR_SHFT",
"HW", "BK")
model1 = FinModelBlack(0.00001)
model2 = FinModelBlackShifted(0.00001, 0.0)
model3 = FinModelSABR(0.013, 0.5, 0.5, 0.5)
model4 = FinModelSABRShifted(0.013, 0.5, 0.5, 0.5, -0.008)
model5 = FinModelRatesHW(0.00001, 0.00001)
model6 = FinModelRatesBK(0.01, 0.01)
settlementDate = valuationDate.addWorkDays(2)
for k in strikes:
swaptionType = FinLiborSwapTypes.PAYER
swaption = FinLiborSwaption(settlementDate, exerciseDate,
swapMaturityDate, swaptionType, k,
swapFixedFrequencyType,
swapFixedDayCountType)
swap1 = swaption.value(valuationDate, liborCurve, model1)
swap2 = swaption.value(valuationDate, liborCurve, model2)
swap3 = swaption.value(valuationDate, liborCurve, model3)
swap4 = swaption.value(valuationDate, liborCurve, model4)
swap5 = swaption.value(valuationDate, liborCurve, model5)
swap6 = swaption.value(valuationDate, liborCurve, model6)
testCases.print("PAY", k, swap1, swap2, swap3, swap4, swap5, swap6)
testCases.header("LABEL", "STRIKE", "BLK", "BLK_SHFTD", "SABR",
"SABR_SHFTD", "HW", "BK")
for k in strikes:
swaptionType = FinLiborSwapTypes.RECEIVER
swaption = FinLiborSwaption(settlementDate, exerciseDate,
swapMaturityDate, swaptionType, k,
swapFixedFrequencyType,
swapFixedDayCountType)
swap1 = swaption.value(valuationDate, liborCurve, model1)
swap2 = swaption.value(valuationDate, liborCurve, model2)
swap3 = swaption.value(valuationDate, liborCurve, model3)
swap4 = swaption.value(valuationDate, liborCurve, model4)
swap5 = swaption.value(valuationDate, liborCurve, model5)
swap6 = swaption.value(valuationDate, liborCurve, model6)
testCases.print("REC", k, swap1, swap2, swap3, swap4, swap5, swap6)
def test_SABR_Calibration():
beta = 0.5
rho = -0.09
nu = 0.1
strikeVol = 0.1
f = 0.043
k = 0.050
r = 0.03
texp = 1.0
callOptionType = FinOptionTypes.EUROPEAN_CALL
putOptionType = FinOptionTypes.EUROPEAN_PUT
df = np.exp(-r * texp)
testCases.header("TEST", "CALIBRATION ERROR")
# Make SABR equivalent to lognormal (Black) model
# (i.e. alpha = 0, beta = 1, rho = 0, nu = 0, shift = 0)
modelSABR_01 = FinModelSABR(0.0, 1.0, 0.0, 0.0)
modelSABR_01.setAlphaFromBlackVol(strikeVol, f, k, texp)
impliedLognormalVol = modelSABR_01.blackVol(f, k, texp)
impliedATMLognormalVol = modelSABR_01.blackVol(k, k, texp)
impliedLognormalSmile = impliedLognormalVol - impliedATMLognormalVol
assert impliedLognormalSmile == 0.0, "In lognormal model, smile should be flat"
calibrationError = round(strikeVol - impliedLognormalVol, 12)
testCases.print("LOGNORMAL CASE", calibrationError)
# Volatility: pure SABR dynamics
modelSABR_02 = FinModelSABR(alpha, beta, rho, nu)
modelSABR_02.setAlphaFromBlackVol(strikeVol, f, k, texp)
impliedLognormalVol = modelSABR_02.blackVol(f, k, texp)
impliedATMLognormalVol = modelSABR_02.blackVol(k, k, texp)
impliedLognormalSmile = impliedLognormalVol - impliedATMLognormalVol
calibrationError = round(strikeVol - impliedLognormalVol, 12)
testCases.print("SABR CASE", calibrationError)
# Valuation: pure SABR dynamics
valueCall = modelSABR_02.value(f, k, texp, df, callOptionType)
valuePut = modelSABR_02.value(f, k, texp, df, putOptionType)
assert round(valueCall - valuePut, 12) == round(df*(f - k), 12), \
"The method called 'value()' doesn't comply with Call-Put parity"
