/// <summary>
/// Generate CTD dates and set CTD coupon rate and conversion factor.
/// </summary>
protected void GenerateCTD(double baseDate, double issueDate, double maturityDate, double couponInterval, double firstCouponDate, double penultimateCouponDate, DayCount dayCount, IHolidayCalendar calendar, double couponRate, double conversionFactor)
{
if (conversionFactor <= 0.0)
{
return; // No CTD details or details invalid
}
BondFutureOption deal = (BondFutureOption)fDeal;
// Validation of settlement date not done for CTD details on price factor
if (deal.Settlement_Date >= maturityDate)
{
throw new AnalyticsException("Settlement date must be before cheapest-to-deliver maturity date.");
}
DateGenerationResults dateGenerationResults = deal.GetDateGenerationResults(issueDate, maturityDate, couponInterval, firstCouponDate, penultimateCouponDate, dayCount, calendar);
fPayDates = dateGenerationResults.PayDates;
fAccruals = dateGenerationResults.AccrualYearFractions;
fIssueDate = issueDate;
fMaturityDate = maturityDate;
fCouponInterval = couponInterval;
fCouponRate = couponRate;
fConversionFactor = conversionFactor;
fAccrual = PricingFunctions.AccruedInterest(deal.Settlement_Date, fIssueDate, fPayDates, fAccruals, fCouponRate, 1.0, null);
double strike = PriceTransform(deal.Strike);
double tSettle = CalcUtils.DaysToYears(deal.Settlement_Date - baseDate);
double tMaturity = CalcUtils.DaysToYears(fMaturityDate - baseDate);
fStrikeYield = PricingFunctions.BondYieldFromPrice(tSettle, tMaturity, couponRate, couponInterval, strike);
}
/// <summary>
/// Returns bond option's dirty strike.
/// </summary>
public double DirtyStrike(double strikePrice, DateList payDates, double[] accruals)
{
var strike = Percentage.PercentagePoint * strikePrice;
if (Strike_Is_Clean == YesNo.Yes)
{
strike += PricingFunctions.AccruedInterest(Expiry_Date, Issue_Date, payDates, accruals, Percentage.PercentagePoint * Coupon_Rate, 1, null);
}
return(strike);
}
