// -------------------------------------------------------------------------
public void test_priceSensitivity() {
PointSensitivities point =
OPTION_PRICER.priceSensitivityStickyStrike(
FUTURE_OPTION_PRODUCT, RATE_PROVIDER, VOL_PROVIDER);
CurveCurrencyParameterSensitivities computed = RATE_PROVIDER.curveParameterSensitivity(point);
CurveCurrencyParameterSensitivities expected =
FD_CAL.sensitivity(
RATE_PROVIDER,
(p) ->
CurrencyAmount.of(
EUR, OPTION_PRICER.price(FUTURE_OPTION_PRODUCT, (p), VOL_PROVIDER)));
double futurePrice = FUTURE_PRICER.price(FUTURE_OPTION_PRODUCT.getUnderlying(), RATE_PROVIDER);
double strike = FUTURE_OPTION_PRODUCT.getStrikePrice();
double expiryTime =
ACT_365F.relativeYearFraction(VALUATION_DATE, FUTURE_OPTION_PRODUCT.getExpiryDate());
double logMoneyness = Math.log(strike / futurePrice);
double logMoneynessUp = Math.log(strike / (futurePrice + EPS));
double logMoneynessDw = Math.log(strike / (futurePrice - EPS));
double vol = SURFACE.zValue(expiryTime, logMoneyness);
double volUp = SURFACE.zValue(expiryTime, logMoneynessUp);
double volDw = SURFACE.zValue(expiryTime, logMoneynessDw);
double volSensi = 0.5 * (volUp - volDw) / EPS;
double vega = BlackFormulaRepository.vega(futurePrice, strike, expiryTime, vol);
CurveCurrencyParameterSensitivities sensiVol =
RATE_PROVIDER
.curveParameterSensitivity(
FUTURE_PRICER.priceSensitivity(
FUTURE_OPTION_PRODUCT.getUnderlying(), RATE_PROVIDER))
.multipliedBy(-vega * volSensi);
expected = expected.combinedWith(sensiVol);
assertTrue(computed.equalWithTolerance(expected, 30d * EPS));
}
// -------------------------------------------------------------------------
public void test_priceSensitivity() {
PointSensitivities point = FUTURE_PRICER.priceSensitivity(FUTURE_PRODUCT, PROVIDER);
CurrencyParameterSensitivities computed = PROVIDER.parameterSensitivity(point);
CurrencyParameterSensitivities expected =
FD_CAL.sensitivity(
PROVIDER, (p) -> CurrencyAmount.of(USD, FUTURE_PRICER.price(FUTURE_PRODUCT, (p))));
assertTrue(computed.equalWithTolerance(expected, EPS * 10.0));
}
public void test_priceSensitivity_from_future_price() {
double futurePrice = 1.1d;
PointSensitivities point =
OPTION_PRICER.priceSensitivityStickyStrike(
FUTURE_OPTION_PRODUCT, RATE_PROVIDER, VOL_PROVIDER, futurePrice);
CurveCurrencyParameterSensitivities computed = RATE_PROVIDER.curveParameterSensitivity(point);
double delta =
OPTION_PRICER.deltaStickyStrike(
FUTURE_OPTION_PRODUCT, RATE_PROVIDER, VOL_PROVIDER, futurePrice);
CurveCurrencyParameterSensitivities expected =
RATE_PROVIDER
.curveParameterSensitivity(
FUTURE_PRICER.priceSensitivity(
FUTURE_OPTION_PRODUCT.getUnderlying(), RATE_PROVIDER))
.multipliedBy(delta);
assertTrue(computed.equalWithTolerance(expected, TOL));
}
// -------------------------------------------------------------------------
// regression to 2.x
public void regression() {
double price = FUTURE_PRICER.price(FUTURE_PRODUCT, PROVIDER);
assertEquals(price, 1.2106928633440506, TOL);
PointSensitivities point = FUTURE_PRICER.priceSensitivity(FUTURE_PRODUCT, PROVIDER);
CurrencyParameterSensitivities test = PROVIDER.parameterSensitivity(point);
DoubleArray expectedIssuer =
DoubleArray.of(
-3.940585873921608E-4,
-0.004161527192990392,
-0.014331606019672717,
-1.0229665443857998,
-4.220553063715371,
0);
DoubleArray actualIssuer =
test.getSensitivity(METADATA_ISSUER.getCurveName(), USD).getSensitivity();
assertTrue(actualIssuer.equalWithTolerance(expectedIssuer, TOL));
DoubleArray expectedRepo =
DoubleArray.of(0.14752541809405412, 0.20907575809356016, 0.0, 0.0, 0.0, 0.0);
DoubleArray actualRepo =
test.getSensitivity(METADATA_REPO.getCurveName(), USD).getSensitivity();
assertTrue(actualRepo.equalWithTolerance(expectedRepo, TOL));
}