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Consumer Asset-Backed Group Financial Guarantee Exposure (as of March 31, 2008)

The information presented below has been prepared by Ambac Assurance. The information is believed to be accurate and complete as of the date indicated above. This information is provided solely to assist analysts and others in gaining a better understanding of Ambac Assurance's Consumer Asset-Backed Group's financial guarantee exposure*. Internal Ambac credit ratings are provided solely to indicate the underlying credit quality of guaranteed obligations based on the view of Ambac Assurance. They are subject to revision at anytime and do not constitute investment advice. Ambac Assurance, or one of its affiliates, has insured the obligations listed and may also provide other products or services to the issuers of these obligations for which Ambac may have received premiums or fees. For definitions of the terms used in this table, please refer to the glossary.

* Excludes Securitized Student Loans.

Glossary of Terminology

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Issuer

Issue name

Issue Date

Collateral Type

Original Insured Amount ($Millions)

Current Net Par Exposure ($Millions)

Clean-up Call

Original Ambac Rating

Current Ambac Rating

Auto Securitizations
ABN AMRODaimler Chrysler 2007-A Lease Trust9/4/2007Auto Receivables1,000.00415.1110%AAAAAA
AmeriCredit CorpAmeriCredit Automobile Receivables Trust 2004-C-A8/31/2004Auto Receivables800.00116.8510%BBBAA
AmeriCredit CorpAmeriCredit Automobile Receivables Trust 2005-D-A11/17/2005Auto Receivables1,400.00427.9610%BBBBBB
Bank Of America, N.A.Superior Wholesale Inventory Financing (SWIFT) Trust X, Series 2004-A4/11/2006Auto Receivables180.00140.0010%AAAAAA
Capital One Auto FinanceCapital One Auto Finance Trust 2004-A5/25/2004Auto Receivables1,000.00102.4510%BBBBBB
Capital One Auto FinanceCapital One Auto Finance Trust 2005-A4/7/2005Auto Receivables1,500.00264.5510%BBBBBB
Capital One Auto FinanceCapital One Auto Finance Trust 2006-A5/4/2006Auto Receivables2,750.00988.2310%BBBBBB
Capital One Auto FinanceCapital One Auto Finance Trust 2007-A2/15/2007Auto Receivables1,500.00791.5810%BBBBBB
Cendant CorporationAESOP Funding II, L.L.C. 2003-35/6/2003Auto Rental Fleet Securitisations750.00225.00%BBBBBB
Cendant CorporationAVIS Budget Rental Car Funding (AESOP) LLC, Series 2007-26/6/2007Auto Rental Fleet Securitisations650.00474.56%BBBBBB
Cendant CorporationCendant Rental Car Funding (AESOP) LLC Series 2005-46/1/2005Auto Rental Fleet Securitisations800.00620.00%BBBBBB
Hertz CorporationHertz Vehicle Financing, LLC Series 2005-212/21/2005Auto Rental Fleet Securitisations2,150.001,475.44%BBBBBB
Rental Car Finance CorporationRental Car Finance Corporation 2004-15/5/2004Auto Rental Fleet Securitisations500.00455.00%BBBBBB
Rental Car Finance CorporationRental Car Finance Corporation 2006-13/28/2006Auto Rental Fleet Securitisations600.00483.75%BBBBBB
Triad Financial CorporationTriad Auto Receivables Trust 2004-A3/18/2004Auto Receivables670.2566.1710%BBBAA
Triad Financial CorporationTriad Auto Receivables Trust 2005-A5/26/2005Auto Receivables1,104.00210.1810%BBBA
Triad Financial CorporationTriad Auto Receivables Trust 2006-A1/26/2006Auto Receivables822.50270.1310%BBBBBB
Triad Financial CorporationTriad Auto Receivables Trust 2006-C10/18/2006Auto Receivables1,092.20501.7510%BBBBBB-
United Panam Financial CorpUPFC Auto Receivables Trust 2005-A4/14/2005Auto Receivables195.0022.7610%BBBBBB
United Panam Financial CorpUPFC Auto Receivables Trust 2006-B12/14/2006Auto Receivables250.0098.4710%BBBBBB
United Panam Financial CorpUPFC Auto Receivables Trust 2007-B11/8/2007Auto Receivables250.00204.7810%BBBBBB
Vanguard Car Rental USA, Inc.ARG Funding Corp 2005-2 Rental Car Variable Funding Asset Backed Notes4/1/2005Auto Rental Fleet Securitisations1,500.001,050.28%BBBBBB
Private PlacementPrivate Placement2006Auto Receivables71.0071.0010%AAAAAA
Private PlacementPrivate Placement2006Auto Receivables0.001,125.0010%AAAAAA
Private PlacementPrivate Placement2007Auto Rental Fleet Securitisations153.14106.35%BBBBBB
21,688.0910,707.35
Credit Card Receivables
1st Financial Funding & Investment1st Financial Credit Card Master Note Trust II, Series 2005-A3/24/2005Credit Card Receivables92.5055.50%BBBBBB
1st Financial Funding & Investment1st Financial Credit Card Master Note Trust II, Series 2005-B9/26/2005Credit Card Receivables92.5055.50%BBBBBB
1st Financial Funding & Investment1st Financial Credit Card Master Note Trust II, Series 2007-B, Class A12/11/2007Credit Card Receivables54.1054.10%BBBBBB
Cabela's Credit Card Master Note TrustCabela's Credit Card Master Note Trust, Class A Fixed Rate Series 2004-14/14/2004Credit Card Receivables75.0066.00%BBBBBB
Cabela's Credit Card Master Note TrustCabela's Credit Card Master Note Trust, Class A Floating Rate Series 2004-II4/14/2004Credit Card Receivables175.00154.00%BBBBBB
Providian Gateway Master TrustProvidian Gateway Master Trust, Floating Rate Class A, Series 2001-D6/8/2001Credit Card Receivables650.00597.50%BBBBBB-
1,139.10982.60
Manufactured Housing
Bear, Stearns & Co. Inc.Madison Avenue Manufacturing Housing Trust, Series 2002-A3/28/2002Manufactured Housing Pls556.33114.9910%AAAA
CITLehman ABS Manufactured Housing, 2001-B10/31/2001Manufactured Housing Pls375.00118.0210%AAAA+
Conseco Finance CorporationConseco Finance Securities Corporation, 2001-26/27/2001Manufactured Housing Pls402.50121.6010%AA+BIG
Conseco Finance CorporationLehman RABS Series 2004-1Trust (Conseco MH Series 1999-2, Class A7)3/4/2004Manufactured Housing Pls46.9621.1910%AA+AA+
CountryPlace MortgageCountryPlace Manufactured Housing Contract Trust Series 2005-17/12/2005Manufactured Housing Pls118.4480.0110%BBB+BBB+
CountryPlace MortgageCountryPlace Manufactured Housing Contract Trust Series 2007-13/22/2007Manufactured Housing Pls101.9485.4210%AA
Deutsche BankGreen Tree 2006-1 Asset-Backed Note LLC,9/13/2006Manufactured Housing Pls210.98171.6910%AA
Greenpoint Credit Corp.GreenPoint Manufactured 2001-210/2/2001Manufactured Housing Pls425.89138.8010%AAAA
MERIT Securities CorporationMERIT Securities Corporation Series 12-16/10/2004Manufactured Housing Pls121.6167.2010%AA+AA+
Newcastle Investment Corp New YorkNewcastle MH I LLC, Asset-Backet Notes6/30/2006Manufactured Housing Pls177.93141.2210%BBB+BBB+
Newcastle Investment Corp New YorkNewcastle MH I LLC, Asset-Backet Notes 2006-112/20/2006Manufactured Housing Pls291.83201.9110%AA
Origen FinancialOrigen Manufactured Housing Contract Trust 2007-B10/16/2007Manufactured Housing Pls126.70123.2410%BBB+BBB+
Origen FinancialOrigen Manufacturing Housing Contract Trust Collateralized Notes 2006-A8/25/2006Manufactured Housing Pls200.65165.9710%BBB+BBB+
Origen FinancialOrigen Manufacturing Housing Contract Trust Collateralized Notes 2007-A5/2/2007Manufactured Housing Pls184.39169.1310%BBB+BBB+
3,341.151,720.39
Mortgage & Home Equity
Accredited Home Lenders, Inc.Accredited Mortgage Loan Trust 2002-17/25/2002Residential Mortgages - Sub-Prime207.4011.3810%A-A-
Accredited Home Lenders, Inc.Accredited Mortgage Loan Trust 2002-211/25/2002Residential Mortgages - Sub-Prime541.9034.7810%AA
Accredited Home Lenders, Inc.Accredited Mortgage Loan Trust 2003-15/30/2003Residential Mortgages - Sub-Prime303.0525.6410%A-A-
Accredited Home Lenders, Inc.Accredited Mortgage Loan Trust 2003-29/25/2003Residential Mortgages - Sub-Prime416.8045.5510%A-A-
Accredited Home Lenders, Inc.Accredited Mortgage Loan Trust 2003-311/25/2003Residential Mortgages - Sub-Prime515.5572.2110%A-A-
Accredited Home Lenders, Inc.Accredited Mortgage Loan Trust 2004-12/19/2004Residential Mortgages - Sub-Prime505.0070.5410%A-A-
Accredited Home Lenders, Inc.Accredited Mortgage Loan Trust 2004-3, Class 1A58/27/2004Residential Mortgages - Sub-Prime29.0229.0210%AAAAAA
Adelaide BankTorrens Trust Series 2004-2 (W)6/18/2004Pooled RMBS outside the US751.86408.6510%AAAAAA
American Business Financial ServicesAmerican Business Financial Services, Inc., Mortgage-Backed Notes, 2000-13/30/2000Residential Mortgages - Sub-Prime235.0010.5410%BBBBIG
American Business Financial ServicesAmerican Business Financial Services, Inc., Mortgage-Backed Notes, 2000-39/28/2000Residential Mortgages - Sub-Prime150.007.3410%BBBBIG
American Business Financial ServicesAmerican Business Financial Services, Inc., Mortgage-Backed Notes, 2000-412/21/2000Residential Mortgages - Sub-Prime275.0015.9710%BBBBIG
American Business Financial ServicesAmerican Business Financial Services, Inc., Mortgage-Backed Notes, 2002-13/21/2002Residential Mortgages - Sub-Prime320.0029.3810%BBBBIG
American Business Financial ServicesAmerican Business Financial Services, Inc., Mortgage-Backed Notes, 2003-210/31/2003Residential Mortgages - Sub-Prime147.9412.1310%AAAAAA
American Home Mortgage Investment Corp.American Home Mortgage Investment Trust 2005-26/22/2005Residential Mortgages - Sub-Prime115.72115.7210%AAAAAA
Ameriquest Mortgage CompanyArgent 2004-W33/5/2004Residential Mortgages - Sub-Prime455.2557.1910%AA
Ameriquest Mortgage CompanyArgent NIM Trust 2004-WN75/18/2004Net Interest Margins (NIMs)63.005.0410%BBB-BIG
Ameriquest Mortgage CompanyQuest 2003-X411/26/2003Residential Mortgages - Sub-Prime124.951.9510%AAAA
Ameriquest Mortgage CompanyQuest 2004-X13/17/2004Residential Mortgages - Sub-Prime204.1128.4910%AAAA
Asset Backed Funding CorporationAsset Backed Funding Corporation NIM Trust 2004-OPT26/3/2004Net Interest Margins (NIMs)77.303.9510%BBB-BIG
Banc of America Securities LLCBank Of America Funding Corporation 2007-5, Class 2A4, Oppenheimer Fund7/5/2007Residential Mortgages - Mid-Prime13.766.4710%AAABBB
Banc of America Securities LLCBank Of America Funding Corporation 2007-5, Class 3A2, Oppenheimer Fund7/5/2007Residential Mortgages - Mid-Prime24.5511.6910%AAABBB
Bear, Stearns & Co. Inc.Bear Stearns Alt-A Trust 2006-R19/29/2006Residential Mortgages - Mid-Prime141.92111.3310%AAAAAA
Bear, Stearns & Co. Inc.Bear Stearns Mortgage Funding Trust 2006-AR29/29/2006Affordability Mortgage Product (i/o, neg am)114.3998.5810%AAAAAA
Bear, Stearns & Co. Inc.Bear Stearns Mortgage Funding Trust 2006-AR4, Class A-211/30/2006Affordability Mortgage Product (i/o, neg am)183.63165.7610%AAAAAA
Bear, Stearns & Co. Inc.Bear Stearns Second Lien Trust 2007-1, Class I-A4/30/2007HELOC295.93231.5910%A+BIG
Bear, Stearns & Co. Inc.Bear Stearns Second Lien Trust 2007-1, Class II-A4/30/2007Closed End 2nd Liens382.57314.5210%A+BIG
Bear, Stearns & Co. Inc.Bear Stearns Second Lien Trust 2007-1, Class III-A4/30/2007Closed End 2nd Liens291.27244.4910%A+BIG
Bear, Stearns & Co. Inc.SACO I Trust 2006-2, Class I-A1/30/2006Closed End 2nd Liens322.84134.1310%ABIG
Bear, Stearns & Co. Inc.SACO I Trust 2006-2, Class II-A1/30/2006Closed End 2nd Liens275.74132.6710%ABIG
Bear, Stearns & Co. Inc.SACO I Trust 2006-8, Class A Notes9/15/2006HELOC355.96170.2810%BBBBIG
Bear, Stearns & Co. Inc.SACO I Trust, 2005-1012/30/2005Closed End 2nd Liens284.64123.4110%ABIG
Bear, Stearns & Co. Inc.Structured Asset Mortgage Investment Trust, Series 2006-AR79/5/2006Affordability Mortgage Product (i/o, neg am)150.00117.1910%AAAAAA
Bear, Stearns & Co. Inc.Structured Asset Mortgage Investment Trust, Series 2006-AR810/31/2006Affordability Mortgage Product (i/o, neg am)100.0082.7010%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2003-412/3/2003Affordability Mortgage Product (i/o, neg am)481.5035.3810%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2004-13/10/2004Affordability Mortgage Product (i/o, neg am)767.0058.0810%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2004-26/10/2004Affordability Mortgage Product (i/o, neg am)465.0042.8010%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2004-39/24/2004Affordability Mortgage Product (i/o, neg am)800.1095.3510%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2004-412/3/2004Affordability Mortgage Product (i/o, neg am)677.7099.5610%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2005-13/17/2005Affordability Mortgage Product (i/o, neg am)461.0075.1210%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2005-26/16/2005Affordability Mortgage Product (i/o, neg am)410.0077.2410%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2005-39/20/2005Affordability Mortgage Product (i/o, neg am)342.0098.0910%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2005-A6/7/2005Affordability Mortgage Product (i/o, neg am)475.0047.2510%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding Corp. 2005-B9/27/2005Affordability Mortgage Product (i/o, neg am)190.0035.6510%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2005-412/15/2005Affordability Mortgage Product (i/o, neg am)318.92134.2110%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2005-C11/22/2005Affordability Mortgage Product (i/o, neg am)122.0049.7710%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2006-13/17/2006Affordability Mortgage Product (i/o, neg am)580.60262.1610%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2006-26/15/2006Affordability Mortgage Product (i/o, neg am)500.00262.3310%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2006-39/12/2006Residential Mortgages - Prime332.00257.3810%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2006-412/7/2006Residential Mortgages - Prime210.38177.6910%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2007-13/15/2007Residential Mortgages - Prime430.87330.2910%AAAAAA
Chevy Chase Bank, F.S.B.Chevy Chase Funding LLC, Series 2007-26/21/2007Residential Mortgages - Prime425.00367.6410%AAAAAA
Chevy Chase Bank, F.S.B.CSFB Mortgage Pass-Through Certificates, Series 2002-P13/27/2002Affordability Mortgage Product (i/o, neg am)477.2119.6310%AAAAAA
Citicorp Residential Mortgage Securities, Inc. (CRMSI)Citicorp Residential Mortgage Trust Series 2007-1, Class A47/31/2007Residential Mortgages - Mid-Prime75.0675.0610%AAAAAA
Citicorp Residential Mortgage Securities, Inc. (CRMSI)Citicorp Residential Mortgage Trust Series 2007-2, Class A47/18/2007Residential Mortgages - Mid-Prime90.9690.9610%AAAAAA
Citigroup Global Markets, Inc.Citigroup HELOC Trust 2006-NCB15/23/2006HELOC1,022.29465.9610%BBBBBB
Citigroup Global Markets, Inc.Citigroup Mortgage Loan Trust, 2003-HE312/23/2003Residential Mortgages - Sub-Prime437.25109.0810%AAAA
Citigroup Global Markets, Inc.Citigroup Mortgage Loan Trust, 2003-HE412/30/2003Residential Mortgages - Sub-Prime275.4668.4810%AA+AA+
Citigroup Global Markets, Inc.Citigroup Mortgage Securities, Inc. REMIC Series 2005-2, Class IA-33/28/2005Residential Mortgages - Prime15.1415.1410%AAAAAA
Compass BankCompass Receivables Asset Funding Trust 2003-HE15/28/2003Residential Mortgages - Prime754.43108.6510%AA
Compass BankCompass Residential Mortgage Trust 2004-R13/30/2004Residential Mortgages - Prime590.97195.2510%A-A-
Contifinancial Services CorporationContiMortgage Home Equity Loan Trust, 1999-13/4/1999Residential Mortgages - Sub-Prime617.505.1110%AA
Contifinancial Services CorporationContiMortgage Home Equity Loan Trust, 1999-36/17/1999Residential Mortgages - Sub-Prime760.007.8010%ABBB
Countrywide Home Loans, Inc.Countrywide Alternative Loan Trust 2007-12T1, Oppenheimer Fund, Class A-44/30/2007Mortgages-Other48.6020.7410%AAAAAA
Countrywide Home Loans, Inc.Countrywide Alternative Loan Trust 2007-1T1, Oppenheimer Fund, Class 2-A-11/30/2007Mortgages-Other50.0021.9910%AAAAAA
Countrywide Home Loans, Inc.Countrywide Alternative Loan Trust Series 2006-OA19, Class A-3A11/30/2006Affordability Mortgage Product (i/o, neg am)100.0079.2110%AAAAAA
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates 2007-S3, Oppenheimer Fund, Class A33/30/2007Closed End 2nd Liens52.0025.4810%AAAAAA
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates Trust 2004-13, Class AF-5B12/30/2004Residential Mortgages - Sub-Prime44.0544.0510%AAAAAA
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates Trust 2004-AB19/29/2004Affordability Mortgage Product (i/o, neg am)623.5652.7110%AAAAAA
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates Trust 2005-1, Class AF-5B3/30/2005Residential Mortgages - Sub-Prime30.0030.0010%AAAAAA
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates Trust 2005-1612/28/2005Residential Mortgages - Sub-Prime1,038.96660.6410%BBB+BBB+
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates Trust 2005-1712/29/2005Residential Mortgages - Sub-Prime860.40558.5010%BBB+BBB+
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates Trust 2005-3, Class AF-5B3/30/2005Residential Mortgages - Sub-Prime39.0039.0010%AAAAAA
Countrywide Home Loans, Inc.Countrywide Asset Backed Certificates Trust 2006-137/28/2006Residential Mortgages - Sub-Prime442.13324.6910%BBB+BBB+
Countrywide Home Loans, Inc.Countrywide Asset-Backed Certificates Trust 2006-116/29/2006Residential Mortgages - Sub-Prime690.20536.1710%BBBBBB
Countrywide Home Loans, Inc.Countrywide Home Equity Loan Trust 2006-S69/29/2006Closed End 2nd Liens1,100.00799.6010%A-A-
Countrywide Home Loans, Inc.Countrywide Home Loans Alternative Trust 2005-8112/29/2005Residential Mortgages - Mid-Prime96.7369.8410%AAAAAA
Countrywide Home Loans, Inc.Countrywide Revoliving Home Equity Loan Trust 2004-G6/29/2004HELOC630.5051.0710%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-D6/30/2004HELOC1,249.17171.8610%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-J9/30/2004HELOC1,000.00106.8010%BBBBBB-
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-K9/29/2004HELOC1,725.89211.9610%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-L9/29/2004HELOC1,015.23122.6110%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-M9/29/2004HELOC1,015.23123.0610%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-N9/29/2004HELOC1,015.23122.4210%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-O9/30/2004HELOC1,275.83185.3810%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-S12/23/2004HELOC740.0093.7610%BBBBBB-
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2004-T12/23/2004HELOC2,000.00330.8710%A-A-
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2005-F9/29/2005HELOC2,706.75965.3810%BBB+BBB-
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2005-L12/29/2005HELOC400.00107.9210%BBB+BBB+
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2006-B3/29/2006HELOC1,150.00516.9310%BBBBIG
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2006-C3/30/2006HELOC1,850.00866.5010%BBB+BIG
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2006-S13/30/2006Closed End 2nd Liens860.00494.2510%BBBBBB
Countrywide Home Loans, Inc.Countrywide Revolving Home Equity Loan Trust 2006-S49/8/2006Closed End 2nd Liens1,000.00712.93