http://quantlib.414.s1.nabble.com/QuantLib-Users-IborIndex-Fixings-vs-Bloomberg-Fixings-tp5632p5634.html
Subject: Re: [Quantlib-users] [QuantLib-Users] IborIndex Fixings vs Bloomberg Fixings
Do you have a set of inputs that reproduces the problem? (Evaluation date, input rates, conventions you're using...)
> Sending again in hopes it was simply forgotten...
>
>
>
> Thanks,
>
> Dale Smith, Ph.D.
>
> Senior Financial Quantitative Analyst
>
> Risk & Compliance
>
> Fiserv.
>
> 107 Technology Park
>
> Norcross, GA 30092
>
> Office: 678-375-5315
>
> Mobile: 678-982-6599
>
> Mail:
[hidden email]
>
> www.fiserv.com
>
>
>
> From: Smith, Dale
> Sent: Thursday, March 29, 2012 10:43 AM
> To:
[hidden email]
> Subject: [QuantLib-Users] IborIndex Fixings vs Bloomberg Fixings
>
>
>
> Hello,
>
>
>
> I'm trying to tie out a QuantLib program with Bloomberg's SWPM screen.
> I have the deposit, futures, and swap rates as in the Swap example
> project, and created an IborIndex using the joint UK and US calendars
> to pick up both sets of holidays.
>
>
>
> boost::shared_ptr<IborIndex> idx(new USDLibor(Period(3, Months),
> forecastingTermStructure));
>
>
>
> forecastingTermStructure is linked to
>
>
>
> boost::shared_ptr<YieldTermStructure>
> depoFutSwapTermStructure(
>
> //new PiecewiseYieldCurve<Discount, Linear>(
>
> new PiecewiseYieldCurve<ZeroYield, Linear>(
>
> settlementDate,
> depoFutSwapInstruments,
>
> termStructureDayCounter,
>
> tolerance));
>
>
>
> My problem is the fixings used in the floating leg that Bloomberg uses
> are not the same as what QuantLib uses. I did do a clearFixing() on
> the IborIndex object and added the fixings I see on the SWPM Resets
> tab. I've also confirmed by calculations in Excel that the difference
> in cashflows on the floating leg is due entirely to the fixings.
>
>
>
> Bloomberg uses Piecewise Linear (Simple) for the interpolation. I
> changed that to Piecewise Linear (Continuous) but the fixings still
> don't match. I also changed to PiecewiseYieldCurve<ZeroYield, Linear>
> in my own code after confirming with Bloomberg they are interpolating
> the term structure, not the discount factors or the market rates.
>
>
>
> I've used Google to search for answers to this, and looked at the
> examples and unit tests in the QuantLib code. Is there anywhere I've
> missed in my searches?
>
>
>
> Thanks,
>
> Dale Smith, Ph.D.
>
> Senior Financial Quantitative Analyst
>
> Risk & Compliance
>
> Fiserv.
>
> 107 Technology Park
>
> Norcross, GA 30092
>
> Office: 678-375-5315
>
> Mobile: 678-982-6599
>
> Mail:
[hidden email]
>
> www.fiserv.com
>
>
>
>
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