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	 Hi, 
I am a relatively new user to QLib XL. I am getting the following error when trying to bootstrap a rate curve as per the attached spreadsheet (cells E83 to E105). 'qlPiecewiseYieldCurveData - 1st iteration: failed at 12th alive instrument, maturity January 8th, 2018, reference date January 6th, 2010: root not bracketed: f[0.780492,0.866129] -> [9.956026e-004,1.327038e-002]' The error seems to be caused by the 8y swap - removing that item from the curve construction does indeed get around this error.  I have read that it could be caused by the Loglinear interpolation, but changing to Linear did not change the outcome in this example. Also the error obtained is from an old version of Quantlib XL, so am not sure if the issue is resolved by a later version. Would be grateful for any guidance on this issue. Many thanks, Mitul ------------------------------------------------------------------------------ _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users  | 
			
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	 Hello Mitul,     I don't seem to be able to open the spreadsheet.  May you just post the rates as text? Thanks,     Luigi On Tue, Aug 30, 2016 at 10:41 PM Mitul Patel <[hidden email]> wrote: 
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	 Hi Luigi, Thanks for looking into this.  Please see below the rates. I've also included the other configuration for these rates/instruments. Please let me know if you need anything further. ObjectId	Rate	Tenor	FixingDays	Calendar	Convention	EndOfMonth	DayCounter	Permanent	Trigger	Overwrite Cash - 3M	 0.00694000 	3M	2	TARGET	Modified following	FALSE	Actual/360		06/01/2010	 ObjectId	Price	IMM	LengthInMonths	Calendar	Convention	EndOfMonth	DayCounter	ConvexityAdjQuote	Permanent	Trigger	Overwrite Future 1	 99.2700000 	U6	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 Future 2	 98.9400000 	Z6	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 Future 3	 98.5800000 	H7	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 Future 4	 98.2550000 	M7	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 Future 5	 97.9800000 	U7	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 Future 6	 97.7250000 	Z7	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 Future 7	 97.5200000 	H8	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 Future 8	 97.3200000 	M8	3	TARGET	Modified Following	FALSE	Actual/360	0		06/01/2010	 ObjectId	Rate	Tenor	Calendar	FixedLegFrequency	FixedLegConvention	FixedLegDayCounter	IborIndex	Spread	ForwardStart	DiscountingCurve	Permanent	Trigger	Overwrite Swap  - 3Y	 0.0204500 	3Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 4Y	 0.0235200 	4Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 5Y	 0.0260800 	5Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 6Y	 0.0283100 	6Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 7Y	 0.0302700 	7Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 8Y	 0.0318800 	8Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 9Y	 0.0331800 	9Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 10Y	 0.0343200 	10Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 11Y	 0.0353700 	11Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 12Y	 0.0363000 	12Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 15Y	 0.0382900 	15Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 20Y	 0.0395000 	20Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 25Y	 0.0392700 	25Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 30Y	 0.0386400 	30Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 40Y	 0.0373100 	40Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Swap  - 50Y	 0.0368400 	50Y	Target	Annual	Modified following	30/360 (Bond Basis)	 EURIBOR#0000 	0	0D			06/01/2010	 Thanks, Mitul On 6 September 2016 at 11:09, Luigi Ballabio <[hidden email]> wrote: 
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	 Hi Mitul, 
 I think that the problem in your spreadsheet is in the evaluation date. In fact the evaluation date is set to 06/01/10 and the futures that you are using are the one between 21/12/16 (U6) and 20/09/18 (M8), that is between 6Y and 9Y swaps.  The bootstrap fails because futures and swaps quotes are really different, 0.73% for the first futures (pillar date 21/12/16) against 3.027% for 7 years swaps (pillar date 09/01/17). 
 If you try to set evaluation date to today, the bootstrap succeed. 
 Hope this help. 
 Regards, Paolo 
 Da: Mitul Patel <[hidden email]> 
Inviato: martedì 6 settembre 2016 22.34 A: Luigi Ballabio Cc: [hidden email] Oggetto: Re: [Quantlib-users] Rate Curve Boostrapping Error using QLib XL Hi Luigi, 
Thanks for looking into this.  
Please see below the rates. I've also included the other configuration for these rates/instruments. Please let me know if you need anything further. 
ObjectId Rate
Tenor FixingDays
Calendar 
Convention EndOfMonth
DayCounter 
Permanent Trigger
Overwrite 
Cash - 3M 
0.00694000 3M
2 TARGET
Modified following
FALSE Actual/360
06/01/2010 
 
ObjectId Price
IMM LengthInMonths
Calendar 
Convention EndOfMonth
DayCounter 
ConvexityAdjQuote 
Permanent Trigger
Overwrite 
Future 1 99.2700000
U6
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
Future 2 98.9400000
Z6
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
Future 3 98.5800000
H7
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
Future 4 98.2550000
M7
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
Future 5 97.9800000
U7
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
Future 6 97.7250000
Z7
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
Future 7 97.5200000
H8
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
Future 8 97.3200000
M8
3 TARGET
Modified Following
FALSE Actual/360
0 06/01/2010
 
ObjectId Rate
Tenor Calendar
FixedLegFrequency
FixedLegConvention
FixedLegDayCounter
IborIndex 
Spread ForwardStart
DiscountingCurve
Permanent 
Trigger Overwrite 
Swap  - 3Y 
0.0204500 3Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 4Y 
0.0235200 4Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 5Y 
0.0260800 5Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 6Y 
0.0283100 6Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 7Y 
0.0302700 7Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 8Y 
0.0318800 8Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 9Y 
0.0331800 9Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 10Y 
0.0343200 10Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 11Y 
0.0353700 11Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 12Y 
0.0363000 12Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 15Y 
0.0382900 15Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 20Y 
0.0395000 20Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 25Y 
0.0392700 25Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 30Y 
0.0386400 30Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 40Y 
0.0373100 40Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Swap  - 50Y 
0.0368400 50Y
Target Annual
Modified following
30/360 (Bond Basis)
EURIBOR#0000 0
0D 06/01/2010
 
Thanks, 
Mitul 
On 6 September 2016 at 11:09, Luigi Ballabio 
<[hidden email]> wrote: 
 Prima di stampare, pensa all'ambiente ** Think about the environment before printing Il presente messaggio, inclusi gli eventuali allegati, ha natura aziendale e potrebbe contenere informazioni confidenziali e/o riservate. Chiunque lo ricevesse per errore, è pregato di avvisare tempestivamente il mittente e di cancellarlo. E’ strettamente vietata qualsiasi forma di utilizzo, riproduzione o diffusione non autorizzata del contenuto di questo messaggio o di parte di esso. Pur essendo state assunte le dovute precauzioni per ridurre al minimo il rischio di trasmissione di virus, si suggerisce di effettuare gli opportuni controlli sui documenti allegati al presente messaggio. Non si assume alcuna responsabilità per eventuali danni o perdite derivanti dalla presenza di virus. Per lo svolgimento delle attività di investimento nel Regno Unito, la società è autorizzata da Banca d'Italia ed è soggetta alla vigilanza limitata della Financial Conduct Authority ( FCA ) e della Prudential Regulation Authority ( PRA ) . Maggiori informazioni in merito ai poteri di vigilanza della Financial Conduct Authority ( FCA ) e della Prudential Regulation Authority ( PRA ) sono a disposizione previa richiesta. Nel Regno Unito Intesa Sanpaolo S.p.A. opera attraverso la filiale di Londra, sita in 90 Queen Street, London EC4N 1SA, registrata in Inghilterra & Galles sotto No.FC016201, Branch No.BR000036 In osservanza dei requisito imposti dal Internal Revenue Service (Agenzia delle Entrate degli Stati Uniti), qualunque discussione relativa a temi di natura fiscale contenuta in questo messaggio o nei suoi allegati non e’ intesa ne’ e’ stata scritta per essere utilizzata, ne’ puo’ essere utilizata per (i) evitare l’imposizione di gravami fiscali secondo il codice tributario vigente negli Stati Uniti o (ii) per promuovere, sollecitare o raccomandare una operazione finanziaria o altra transazione indirizzata ad un altro destinatario. Nella Repubblica d’Irlanda, Intesa Sanpaolo Bank Ireland plc è regolamentata dalla Banca Centrale d’Irlanda ed è parte del Gruppo Bancario Intesa Sanpaolo S.p.A. Registrata in Irlanda come società numero 125216 – IVA Reg. IE4817418C IE, sita in, KBC House, 4 George Dock, IFSC, Dublino 1, Irlanda. *** This email (including any attachment) is a corporate message and may contain confidential and/or privileged and/or proprietary information. If you have received this email in error, please notify the sender immediately, do not use or share it and destroy this email. Any unauthorised use, copying or disclosure of the material in this email or of parts hereof (including reliance thereon) is strictly forbidden. We have taken precautions to minimize the risk of transmitting software viruses but nevertheless advise you to carry out your own virus checks on any attachment of this message. We accept no liability for loss or damage caused by software viruses. For the conduct of investment business in the UK, the Company is authorised by Banca d’Italia and subject to limited regulation in the UK by the Financial Conduct Authority ( FCA ) and the Prudential Regulation Authority ( PRA ). Details about the extent of our regulation by the Financial Conduct Authority ( FCA ) and the Prudential Regulation Authority ( PRA ) are available from us on request. In the UK Intesa Sanpaolo S.p.A. operates through its London Branch, located at 90 Queen Street, London EC4N 1SA. Registered in England & Wales under No.FC016201, Branch No.BR000036 To comply with requirements imposed by the IRS, we inform you that any discussion of U.S. federal tax issues contained herein (including any attachments) was not intended or written to be used, and cannot be used by you, for the purpose of (i) avoiding penalties under the Internal Revenue Code or (ii) promoting, marketing or recommending any transaction or matter addressed herein to another party. In the Republic of Ireland, Intesa Sanpaolo Bank Ireland plc is regulated by the Central Bank of Ireland and is a member of the Intesa Sanpaolo Group. It is registered in Ireland as company no.125216 – VAT Reg. No. IE 4817418C and located at, 3rd Floor, KBC House, 4 George’s Dock, IFSC, Dublin 1, Ireland. ------------------------------------------------------------------------------ _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users  | 
			
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	 Hi Mitul, 
 I think that the problem in your spreadsheet is in the evaluation date. In fact the evaluation date is set to 06/01/10 and the futures that you are using are the one between 21/12/16 (U6) and 20/09/18 (M8), that is between 6Y and 9Y swaps.  The bootstrap fails because futures and swaps quotes are really different, 0.73% for the first futures (pillar date 21/12/16) against 3.027% for 7 years swaps (pillar date 09/01/17). 
 If you try to set evaluation date to today, the bootstrap succeed. 
 Hope this help. 
 Regards, Paolo Prima di stampare, pensa all'ambiente ** Think about the environment before printing Il presente messaggio, inclusi gli eventuali allegati, ha natura aziendale e potrebbe contenere informazioni confidenziali e/o riservate. Chiunque lo ricevesse per errore, è pregato di avvisare tempestivamente il mittente e di cancellarlo. E’ strettamente vietata qualsiasi forma di utilizzo, riproduzione o diffusione non autorizzata del contenuto di questo messaggio o di parte di esso. Pur essendo state assunte le dovute precauzioni per ridurre al minimo il rischio di trasmissione di virus, si suggerisce di effettuare gli opportuni controlli sui documenti allegati al presente messaggio. Non si assume alcuna responsabilità per eventuali danni o perdite derivanti dalla presenza di virus. Per lo svolgimento delle attività di investimento nel Regno Unito, la società è autorizzata da Banca d'Italia ed è soggetta alla vigilanza limitata della Financial Conduct Authority ( FCA ) e della Prudential Regulation Authority ( PRA ) . Maggiori informazioni in merito ai poteri di vigilanza della Financial Conduct Authority ( FCA ) e della Prudential Regulation Authority ( PRA ) sono a disposizione previa richiesta. Nel Regno Unito Intesa Sanpaolo S.p.A. opera attraverso la filiale di Londra, sita in 90 Queen Street, London EC4N 1SA, registrata in Inghilterra & Galles sotto No.FC016201, Branch No.BR000036 In osservanza dei requisito imposti dal Internal Revenue Service (Agenzia delle Entrate degli Stati Uniti), qualunque discussione relativa a temi di natura fiscale contenuta in questo messaggio o nei suoi allegati non e’ intesa ne’ e’ stata scritta per essere utilizzata, ne’ puo’ essere utilizata per (i) evitare l’imposizione di gravami fiscali secondo il codice tributario vigente negli Stati Uniti o (ii) per promuovere, sollecitare o raccomandare una operazione finanziaria o altra transazione indirizzata ad un altro destinatario. Nella Repubblica d’Irlanda, Intesa Sanpaolo Bank Ireland plc è regolamentata dalla Banca Centrale d’Irlanda ed è parte del Gruppo Bancario Intesa Sanpaolo S.p.A. Registrata in Irlanda come società numero 125216 – IVA Reg. IE4817418C IE, sita in, KBC House, 4 George Dock, IFSC, Dublino 1, Irlanda. *** This email (including any attachment) is a corporate message and may contain confidential and/or privileged and/or proprietary information. If you have received this email in error, please notify the sender immediately, do not use or share it and destroy this email. Any unauthorised use, copying or disclosure of the material in this email or of parts hereof (including reliance thereon) is strictly forbidden. We have taken precautions to minimize the risk of transmitting software viruses but nevertheless advise you to carry out your own virus checks on any attachment of this message. We accept no liability for loss or damage caused by software viruses. For the conduct of investment business in the UK, the Company is authorised by Banca d’Italia and subject to limited regulation in the UK by the Financial Conduct Authority ( FCA ) and the Prudential Regulation Authority ( PRA ). Details about the extent of our regulation by the Financial Conduct Authority ( FCA ) and the Prudential Regulation Authority ( PRA ) are available from us on request. In the UK Intesa Sanpaolo S.p.A. operates through its London Branch, located at 90 Queen Street, London EC4N 1SA. Registered in England & Wales under No.FC016201, Branch No.BR000036 To comply with requirements imposed by the IRS, we inform you that any discussion of U.S. federal tax issues contained herein (including any attachments) was not intended or written to be used, and cannot be used by you, for the purpose of (i) avoiding penalties under the Internal Revenue Code or (ii) promoting, marketing or recommending any transaction or matter addressed herein to another party. In the Republic of Ireland, Intesa Sanpaolo Bank Ireland plc is regulated by the Central Bank of Ireland and is a member of the Intesa Sanpaolo Group. It is registered in Ireland as company no.125216 – VAT Reg. No. IE 4817418C and located at, 3rd Floor, KBC House, 4 George’s Dock, IFSC, Dublin 1, Ireland. ------------------------------------------------------------------------------ _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users  | 
			
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