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Ambac Financial Group Inc. – ‘10-Q’ for 6/30/22 – ‘EX-101.SCH’

On:  Monday, 8/8/22, at 4:47pm ET   ·   For:  6/30/22   ·   Accession #:  874501-22-129   ·   File #:  1-10777

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  As Of               Filer                 Filing    For·On·As Docs:Size

 8/08/22  Ambac Financial Group Inc.        10-Q        6/30/22  108:25M

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   5.84M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     37K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     37K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     36K 
10: R1          Document and Entity Information                     HTML     97K 
11: R2          Consolidated Balance Sheets                         HTML    208K 
12: R3          Consolidated Balance Sheets (Parenthetical)         HTML     66K 
13: R4          Consolidated Statements of Total Comprehensive      HTML    186K 
                Income                                                           
14: R5          Consolidated Statements of Total Comprehensive      HTML     45K 
                Income (Parenthetical)                                           
15: R6          Consolidated Statements of Stockholders' Equity     HTML     92K 
16: R7          Consolidated Statements of Cash Flows               HTML    147K 
17: R8          Background and Business Description                 HTML     48K 
18: R9          Basis of Presentation and Significant Accounting    HTML     76K 
                Policies (Notes)                                                 
19: R10         Segment Reporting                                   HTML    223K 
20: R11         Investments                                         HTML    356K 
21: R12         Fair Value Measurements                             HTML    423K 
22: R13         Insurance Contracts                                 HTML    423K 
23: R14         Derivative Instruments                              HTML    175K 
24: R15         Intangible Assets                                   HTML     79K 
25: R16         Revenue Recognition and Deferred Revenue            HTML     52K 
26: R17         Comprehensive Income                                HTML    166K 
27: R18         Net Income Per Share                                HTML     82K 
28: R19         Income Taxes                                        HTML     76K 
29: R20         Commitments and Contingencies                       HTML     93K 
30: R21         Basis of Presentation and Significant Accounting    HTML     68K 
                Policies (Policies)                                              
31: R22         Segment Reporting (Policies)                        HTML     37K 
32: R23         Basis of Presentation and Significant Accounting    HTML     62K 
                Policies Supplemental Cash Flow Information                      
                (Tables)                                                         
33: R24         Segment Reporting (Tables)                          HTML    220K 
34: R25         Investments (Tables)                                HTML    334K 
35: R26         Fair Value Measurements (Tables)                    HTML    396K 
36: R27         Insurance Contracts (Tables)                        HTML    494K 
37: R28         Derivative Instruments (Tables)                     HTML    174K 
38: R29         Intangible Assets (Tables)                          HTML     85K 
39: R30         Special Purpose Entities, Including Variable        HTML    162K 
                Interest Entities (Tables)                                       
40: R31         Revenue Recognition and Deferred Revenue (Tables)   HTML     57K 
41: R32         Comprehensive Income (Tables)                       HTML    157K 
42: R33         Net Income Per Share (Tables)                       HTML     80K 
43: R34         Income Taxes (Tables)                               HTML     77K 
44: R35         Background and Business Description - Additional    HTML     63K 
                Information (Details)                                            
45: R36         Basis of Presentation and Significant Accounting    HTML     37K 
                Policies FX gain (Loss) (Details)                                
46: R37         Basis of Presentation and Significant Accounting    HTML     70K 
                Policies Additional Information (Details)                        
47: R38         Basis of Presentation and Significant Accounting    HTML     54K 
                Policies Supplemental Cash Flow information                      
                (Details)                                                        
48: R39         Segment Reporting (Details)                         HTML    157K 
49: R40         Investments - Summary of Amortized Cost and         HTML    140K 
                Estimated Fair Value of Available-for-Sale                       
                Investments, Excluding VIE Investments (Details)                 
50: R41         Investments - Summary of Amortized Cost and         HTML     78K 
                Estimated Fair Value of Available-for-Sale                       
                Investments, Excluding VIE Investments Held by                   
                Successor Ambac, by Contractual Maturity (Details)               
51: R42         Investments - Summary of Gross Unrealized Losses    HTML    105K 
                and Fair Values of Ambac's Available-for-Sale                    
                Investments (Details)                                            
52: R43         Investments - Additional Information (Details)      HTML     48K 
53: R44         Investments - Summary of Amounts Included in Net    HTML     60K 
                Realized (Losses) Gains and Other-Than-Temporary                 
                Impairments (Details)                                            
54: R45         Investments - Summary of Sources of Collateral      HTML     66K 
                Received and Various Investment Agreement in which               
                Collateral Pledged (Details)                                     
55: R46         Investments - Summary of Fair Value, Including      HTML     70K 
                Financial Guarantee, and Weighted-Average                        
                Underlying Rating, Excluding Financial Guarantee,                
                of Insured Securities (Details)                                  
56: R47         Investments - Summary of Fair Value, Including      HTML     56K 
                Financial Guarantee, and Weighted-Average                        
                Underlying Rating, Excluding Financial Guarantee,                
                of Insured Securities (Phantom) (Details)                        
57: R48         Investments - Summary of Net Investment Income      HTML     45K 
                (Details)                                                        
58: R49         Investments Investments - Equity Investments        HTML     82K 
                (Details)                                                        
59: R50         Fair Value Measurements - Summary of Carrying       HTML    262K 
                Amount and Fair Value of Ambac's Financial Assets                
                and Liabilities (Details)                                        
60: R51         Fair Value Measurements - Additional Information    HTML     68K 
                (Details)                                                        
61: R52         Fair Value Measurements - Information about         HTML    135K 
                Valuation Inputs for Fixed Income Securities                     
                Classified as Level 3 (Details)                                  
62: R53         Fair Value Measurements - Summary of Information    HTML     56K 
                about Described Model Inputs Used to Determine                   
                Fair Value of Each Class of Credit Derivatives                   
                (Details)                                                        
63: R54         Fair Value Measurements - Information about         HTML    115K 
                Valuation Inputs for Variable Interest Entity                    
                Assets and Liabilities Classified as Level 3                     
                (Details)                                                        
64: R55         Fair Value Measurements - Summary of Changes in     HTML    126K 
                Level 3 Fair Value Category (Details)                            
65: R56         Fair Value Measurements - Summary of Gains and      HTML     56K 
                Losses (Realized and Unrealized) Relating to Level               
                3 Assets and Liabilities Included in Earnings                    
                (Details)                                                        
66: R57         Insurance Contracts - Additional Information        HTML    105K 
                (Details)                                                        
67: R58         Financial Guarantee Insurance Contracts - Summary   HTML    292K 
                of Gross Premium Receivable Roll-Forward (Direct                 
                and Assumed Contracts) (Details)                                 
68: R59         Insurance Contracts - Effect of Reinsurance on      HTML     56K 
                Premiums Written and Earned (Details)                            
69: R60         Insurance Contracts - Summarized Future Gross       HTML     98K 
                Undiscounted Premiums Expected to be Collected,                  
                and Future Expected Premiums Earned, Net of                      
                Reinsurance (Details)                                            
70: R61         Insurance Contracts Financial Guarantee Insurance   HTML     62K 
                Contracts - Components of Loss and Loss Expense                  
                Reserves and Subrogation Recoverable (Details)                   
71: R62         Insurance Contracts - Summary of Loss Reserve       HTML     74K 
                Roll-Forward, Net of Subrogation Recoverable and                 
                Reinsurance (Details)                                            
72: R63         Insurance Contracts - Summary of Information        HTML    171K 
                Related to Policies Currently Included in Ambac's                
                Loss Reserves or Subrogation Recoverable (Details)               
73: R64         Insurance Contracts - Summary of Information        HTML     44K 
                Related to Policies Currently Included in Ambac's                
                Loss Reserves or Subrogation Recoverable (Phantom)               
                (Details)                                                        
74: R65         Insurance Contracts - Summary of Balance of RMBS    HTML     38K 
                Subrogation Recoveries and Related Claim                         
                Liabilities, by Estimation Approach (Details)                    
75: R66         Insurance Contracts Financial Guarantee Insurance   HTML     35K 
                Contracts - Summary of Percentage Ceded to                       
                Reinsurers and Reinsurance Recoverable and Rating                
                Levels (Details)                                                 
76: R67         Insurance Contracts - Estimated Future              HTML     66K 
                Amortization Expense for Insurance Intangible                    
                Asset (Details)                                                  
77: R68         Insurance - Summary of Percentage Ceded to          HTML     38K 
                Reinsurers and Reinsurance Recoverable and Rating                
                Levels (Details)                                                 
78: R69         Insurance Contracts Earned Premiums by Geographic   HTML     36K 
                Location (Details)                                               
79: R70         Insurance Contracts Financial Guarantee Insurance   HTML     37K 
                Contracts - Insurance Intangible Asset (Details)                 
80: R71         Insurance Contracts - Premium Earned (Details)      HTML     70K 
81: R72         Insurance Contracts-Puerto Rico                     HTML     55K 
82: R73         Derivative Instruments - Summary of Gross Fair      HTML     94K 
                Values of Individual Derivative Instruments                      
                (Details)                                                        
83: R74         Derivative Instruments - Additional Information     HTML     58K 
                (Details)                                                        
84: R75         Derivative Instruments - Summary of Location and    HTML     59K 
                Amount of Gains and Losses of Derivative Contracts               
                (Details)                                                        
85: R76         Derivative Instruments - Summary of Notional        HTML     49K 
                Amounts of AFS's Trading Derivative Products                     
                (Details)                                                        
86: R77         Derivative Instruments - Summary of Notional for    HTML     43K 
                VIE Derivatives Outstanding (Details)                            
87: R78         Intangible Assets (Details)                         HTML     76K 
88: R79         Special Purpose Entities, Including Variable        HTML     87K 
                Interest Entities - Additional Information                       
                (Details)                                                        
89: R80         Special Purpose Entities, Including Variable        HTML     49K 
                Interest Entities - Summary of Fair Value of Fixed               
                Income Securities, by Asset-Type, Held by                        
                Consolidated Variable Interest Entities (Details)                
90: R81         Special Purpose Entities, Including Variable        HTML     46K 
                Interest Entities - Supplemental Information about               
                Loans Held as Assets and Long-Term Debt Associated               
                with Consolidated Variable Interest Entities                     
                (Details)                                                        
91: R82         Special Purpose Entities, Including Variable        HTML     61K 
                Interest Entities - Summary of Carrying Amount of                
                Assets, Liabilities and Maximum Exposure to Loss                 
                of Ambac's Variable Interests in Non-Consolidated                
                Variable Interest Entities (Details)                             
92: R83         Variable Interest Entities Special Purpose          HTML    114K 
                Entities, including Variable Interest Entities -                 
                Summary of Assets and Liabilities (Details)                      
93: R84         Revenue Recognition and Deferred Revenue (Details)  HTML     62K 
94: R85         Comprehensive Income - Schedule of Changes in       HTML     95K 
                Balances of Each Component of Accumulated Other                  
                Comprehensive Income (Details)                                   
95: R86         Comprehensive Income - Schedule of Amounts          HTML     92K 
                Reclassed Out of Each Component of Accumulated                   
                Other Comprehensive Income (Details)                             
96: R87         Net Income Per Share - Additional Information       HTML     85K 
                (Details)                                                        
97: R88         Net Income Per Share - Reconciliation of Common     HTML     60K 
                Shares Used for Basic and Diluted Earnings Per                   
                Share (Details)                                                  
98: R89         Net Income Per Share Schedule of Basic and          HTML     52K 
                Dilutive Securities for EPS (Details)                            
99: R90         Income Taxes - Additional Information (Details)     HTML     38K 
100: R91         Income Taxes Income Taxes - Provision for Income    HTML     64K  
                Taxes Charged To Income From Continuing Operations               
                (Details)                                                        
101: R92         Income Taxes Income Taxes - NOL Usage Table         HTML     38K  
                (Details)                                                        
102: R93         Income Taxes Schedule of Income Before Income       HTML     43K  
                Taxes (Details)                                                  
103: R94         Commitments and Contingencies - Additional          HTML     37K  
                Information (Details)                                            
106: XML         IDEA XML File -- Filing Summary                      XML    214K  
104: XML         XBRL Instance -- ambc-20220630_htm                   XML   7.90M  
105: EXCEL       IDEA Workbook of Financial Reports                  XLSX    303K  
 6: EX-101.CAL  XBRL Calculations -- ambc-20220630_cal               XML    270K 
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 8: EX-101.LAB  XBRL Labels -- ambc-20220630_lab                     XML   2.95M 
 9: EX-101.PRE  XBRL Presentations -- ambc-20220630_pre              XML   2.50M 
 5: EX-101.SCH  XBRL Schema -- ambc-20220630                         XSD    312K 
107: JSON        XBRL Instance as JSON Data -- MetaLinks              654±  1.14M  
108: ZIP         XBRL Zipped Folder -- 0000874501-22-000129-xbrl      Zip   1.14M

‘EX-101.SCH’   —   XBRL Schema — ambc-20220630

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
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</link:roleType>
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<link:definition> 1003004 - Statement - Consolidated Statements of Total Comprehensive Income </link:definition>
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<link:definition> 1005006 - Statement - Consolidated Statements of Stockholders' Equity </link:definition>
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<link:definition> 1006007 - Statement - Consolidated Statements of Cash Flows </link:definition>
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</link:roleType>
<link:roleType id="BackgroundandBusinessDescription" roleURI="http://www.ambac.com/role/BackgroundandBusinessDescription">
<link:definition> 2101101 - Disclosure - Background and Business Description </link:definition>
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<link:definition> 2402401 - Disclosure - Background and Business Description - Additional Information (Details) </link:definition>
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<link:definition> 2419410 - Disclosure - Investments - Summary of Amounts Included in Net Realized (Losses) Gains and Other-Than-Temporary Impairments (Details) </link:definition>
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<link:definition> 2422413 - Disclosure - Investments - Summary of Fair Value, Including Financial Guarantee, and Weighted-Average Underlying Rating, Excluding Financial Guarantee, of Insured Securities (Details) </link:definition>
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<link:definition> 2423414 - Disclosure - Investments - Summary of Fair Value, Including Financial Guarantee, and Weighted-Average Underlying Rating, Excluding Financial Guarantee, of Insured Securities (Phantom) (Details) </link:definition>
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<link:definition> 2424415 - Disclosure - Investments - Summary of Net Investment Income (Details) </link:definition>
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<link:definition> 2425416 - Disclosure - Investments Investments - Equity Investments (Details) </link:definition>
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<link:definition> 2126105 - Disclosure - Fair Value Measurements </link:definition>
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<link:definition> 2327304 - Disclosure - Fair Value Measurements (Tables) </link:definition>
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<link:definition> 2428417 - Disclosure - Fair Value Measurements - Summary of Carrying Amount and Fair Value of Ambac's Financial Assets and Liabilities (Details) </link:definition>
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<link:definition> 2429418 - Disclosure - Fair Value Measurements - Additional Information (Details) </link:definition>
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<link:definition> 2430419 - Disclosure - Fair Value Measurements - Information about Valuation Inputs for Fixed Income Securities Classified as Level 3 (Details) </link:definition>
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<link:definition> 2431420 - Disclosure - Fair Value Measurements - Summary of Information about Described Model Inputs Used to Determine Fair Value of Each Class of Credit Derivatives (Details) </link:definition>
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<link:definition> 2432421 - Disclosure - Fair Value Measurements - Information about Valuation Inputs for Variable Interest Entity Assets and Liabilities Classified as Level 3 (Details) </link:definition>
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<link:definition> 2433422 - Disclosure - Fair Value Measurements - Summary of Changes in Level 3 Fair Value Category (Details) </link:definition>
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<link:definition> 2434423 - Disclosure - Fair Value Measurements - Summary of Gains and Losses (Realized and Unrealized) Relating to Level 3 Assets and Liabilities Included in Earnings (Details) </link:definition>
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<link:definition> 2135106 - Disclosure - Insurance Contracts </link:definition>
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<link:definition> 2336305 - Disclosure - Insurance Contracts (Tables) </link:definition>
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<link:definition> 2437424 - Disclosure - Insurance Contracts - Additional Information (Details) </link:definition>
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<link:definition> 2438425 - Disclosure - Financial Guarantee Insurance Contracts - Summary of Gross Premium Receivable Roll-Forward (Direct and Assumed Contracts) (Details) </link:definition>
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<link:definition> 2439426 - Disclosure - Insurance Contracts - Effect of Reinsurance on Premiums Written and Earned (Details) </link:definition>
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<link:definition> 2440427 - Disclosure - Insurance Contracts - Summarized Future Gross Undiscounted Premiums Expected to be Collected, and Future Expected Premiums Earned, Net of Reinsurance (Details) </link:definition>
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<link:definition> 2441428 - Disclosure - Insurance Contracts Financial Guarantee Insurance Contracts - Components of Loss and Loss Expense Reserves and Subrogation Recoverable (Details) </link:definition>
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<link:definition> 2442429 - Disclosure - Insurance Contracts - Summary of Loss Reserve Roll-Forward, Net of Subrogation Recoverable and Reinsurance (Details) </link:definition>
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<link:definition> 2443430 - Disclosure - Insurance Contracts - Summary of Information Related to Policies Currently Included in Ambac's Loss Reserves or Subrogation Recoverable (Details) </link:definition>
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<link:definition> 2444431 - Disclosure - Insurance Contracts - Summary of Information Related to Policies Currently Included in Ambac's Loss Reserves or Subrogation Recoverable (Phantom) (Details) </link:definition>
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<link:definition> 2445432 - Disclosure - Insurance Contracts - Summary of Balance of RMBS Subrogation Recoveries and Related Claim Liabilities, by Estimation Approach (Details) </link:definition>
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<link:definition> 2446433 - Disclosure - Insurance Contracts - Summary of Rollforward of RMBS Subrogation, by Estimation Approach (Details) </link:definition>
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<link:definition> 2447434 - Disclosure - Insurance Contracts Financial Guarantee Insurance Contracts - Summary of Percentage Ceded to Reinsurers and Reinsurance Recoverable and Rating Levels (Details) </link:definition>
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<link:definition> 2448435 - Disclosure - Insurance Contracts - Estimated Future Amortization Expense for Insurance Intangible Asset (Details) </link:definition>
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<link:definition> 2449436 - Disclosure - Insurance - Summary of Percentage Ceded to Reinsurers and Reinsurance Recoverable and Rating Levels (Details) </link:definition>
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<link:definition> 2450437 - Disclosure - Insurance Contracts Earned Premiums by Geographic Location (Details) </link:definition>
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<link:definition> 2451438 - Disclosure - Insurance Contracts Financial Guarantee Insurance Contracts - Insurance Intangible Asset (Details) </link:definition>
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<link:definition> 2452439 - Disclosure - Insurance Contracts - Premium Earned (Details) </link:definition>
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<link:definition> 2453440 - Disclosure - Insurance Contracts-Puerto Rico </link:definition>
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<link:definition> 2154107 - Disclosure - Derivative Instruments </link:definition>
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<link:definition> 2355306 - Disclosure - Derivative Instruments (Tables) </link:definition>
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<link:definition> 2456441 - Disclosure - Derivative Instruments - Summary of Gross Fair Values of Individual Derivative Instruments (Details) </link:definition>
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<link:definition> 2457442 - Disclosure - Derivative Instruments - Additional Information (Details) </link:definition>
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<link:definition> 2458443 - Disclosure - Derivative Instruments - Summary of Location and Amount of Gains and Losses of Derivative Contracts (Details) </link:definition>
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<link:definition> 2459444 - Disclosure - Derivative Instruments - Summary of Gross Principal Notional Outstanding for CDS Contracts (Details) </link:definition>
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<link:definition> 2460445 - Disclosure - Derivative Instruments - Summary of Notional Amounts of AFS's Trading Derivative Products (Details) </link:definition>
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<link:definition> 2461446 - Disclosure - Derivative Instruments - Summary of Notional for VIE Derivatives Outstanding (Details) </link:definition>
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<link:definition> 2162108 - Disclosure - Intangible Assets </link:definition>
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<link:definition> 2363307 - Disclosure - Intangible Assets (Tables) </link:definition>
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<xs:element id="ambc_FairValueInputsYieldRate" abstract="false" name="FairValueInputsYieldRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_StructuredInsuranceDomain" abstract="true" name="StructuredInsuranceDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_XchangeMember" abstract="true" name="XchangeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_EmergingMarketDebtMember" abstract="true" name="EmergingMarketDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_LossAndLossAdjustmentExpenseReservesLineItems" abstract="true" name="LossAndLossAdjustmentExpenseReservesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_FinancialGuarantyMember" abstract="true" name="FinancialGuarantyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_EstimatedFuturePremiumPaymentsWeightedAverageDiscountedRate" abstract="false" name="EstimatedFuturePremiumPaymentsWeightedAverageDiscountedRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_DocumentAndEntityInformationAbstract" abstract="true" name="DocumentAndEntityInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_SummaryOfCededParAndNetUnsecuredReinsuranceRecoverableTable" abstract="true" name="SummaryOfCededParAndNetUnsecuredReinsuranceRecoverableTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_EmployerStopLossMember" abstract="true" name="EmployerStopLossMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_FairValueInputsYield" abstract="false" name="FairValueInputsYield" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_FairValueAssetOrLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainsLossesStillHeld" abstract="false" name="FairValueAssetOrLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainsLossesStillHeld" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_DebtSecuritiesAvailableForSaleUnrealizedLossPositionIncludingPledgedSecurities" abstract="false" name="DebtSecuritiesAvailableForSaleUnrealizedLossPositionIncludingPledgedSecurities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_InsuranceIntangibleAssetMember" abstract="true" name="InsuranceIntangibleAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_PercentOfParOfAACsOutstandingAACInsuredCCDAEliminated" abstract="false" name="PercentOfParOfAACsOutstandingAACInsuredCCDAEliminated" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_ScheduleOfEarningsPerShareLineItems" abstract="true" name="ScheduleOfEarningsPerShareLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_LossReservesCededToReinsurers" abstract="false" name="LossReservesCededToReinsurers" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_CommonStockRepurchaseMember" abstract="true" name="CommonStockRepurchaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ChangeInNetLossAndLossExpenseReservesAsAResultOfThePuertoRicoRestructuringTransactions" abstract="false" name="ChangeInNetLossAndLossExpenseReservesAsAResultOfThePuertoRicoRestructuringTransactions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_A5.1JuniorSurplusNotesGeneralAccountDue2020Member" abstract="true" name="A5.1JuniorSurplusNotesGeneralAccountDue2020Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_PRHTA1968BondsMember" abstract="true" name="PRHTA1968BondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityRmbsSubrogation" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityRmbsSubrogation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_VariableInterestEntityChangeinFairValueofAssetsandLiabilities" abstract="false" name="VariableInterestEntityChangeinFairValueofAssetsandLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiability" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ProvisionforIncomeTaxesLineItems" abstract="true" name="ProvisionforIncomeTaxesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_UnearnedPremiumReserveMember" abstract="true" name="UnearnedPremiumReserveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_LoansUnpaidPrincipalBalance" abstract="false" name="LoansUnpaidPrincipalBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ComponentsofLossandLossExpenseReservesandSubrogationRecoverableTable" abstract="true" name="ComponentsofLossandLossExpenseReservesandSubrogationRecoverableTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_ProvisionforIncomeTaxesTable" abstract="true" name="ProvisionforIncomeTaxesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_InterestRateSwapOneMember" abstract="true" name="InterestRateSwapOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_CededLossAndLossExpensesPaidNotYetRecovered" abstract="false" name="CededLossAndLossExpensesPaidNotYetRecovered" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_InsuranceLineItems" abstract="true" name="InsuranceLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityTransfersIntoOrOutOfLevel3" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityTransfersIntoOrOutOfLevel3" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ambc_NumberOfNonadmittedCarriersOwned" abstract="false" name="NumberOfNonadmittedCarriersOwned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ambc_InsuranceLinkedMember" abstract="true" name="InsuranceLinkedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_NumberOfVariableInterestEntitiesDeconsolidatedDuringPeriod" abstract="false" name="NumberOfVariableInterestEntitiesDeconsolidatedDuringPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ambc_ScheduleofDeferredIncomeTaxAssetsandLiabilitiesTable" abstract="true" name="ScheduleofDeferredIncomeTaxAssetsandLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_InterimCashSharedByPRHTACreditorsUnderThePRHTACCSAPSA" abstract="false" name="InterimCashSharedByPRHTACreditorsUnderThePRHTACCSAPSA" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_CreditDerivativesMember" abstract="true" name="CreditDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_AfsMember" abstract="true" name="AfsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleofLossAndLossExpenseReservesAndSubrogationRecoverableTableTableTextBlock" abstract="false" name="ScheduleofLossAndLossExpenseReservesAndSubrogationRecoverableTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_EmployeeStopLossTimeWhenBaseCommissionsRecognizedBeginAndEndInMonths" abstract="false" name="EmployeeStopLossTimeWhenBaseCommissionsRecognizedBeginAndEndInMonths" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ambc_MortgageAndOtherAssetBackedSecuritiesMember" abstract="true" name="MortgageAndOtherAssetBackedSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_EverspanGroupMember" abstract="true" name="EverspanGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_CommonSharesNumberRepurchased" abstract="false" name="CommonSharesNumberRepurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ambc_SitkaAACNoteMember" abstract="true" name="SitkaAACNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_VariableInterestEntityNonconsolidatedCarryingAmountInsuranceAssets" abstract="false" name="VariableInterestEntityNonconsolidatedCarryingAmountInsuranceAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_LongTermDebtUnpaidPrincipalBalance" abstract="false" name="LongTermDebtUnpaidPrincipalBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_DerivativeLiabilitiesNetAmount" abstract="false" name="DerivativeLiabilitiesNetAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_SurveillanceCategoryFourMember" abstract="true" name="SurveillanceCategoryFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityGainLossIncludedInOtherComprehensiveIncomeLoss" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityGainLossIncludedInOtherComprehensiveIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_CommonStockRepurchaseDomain" abstract="true" name="CommonStockRepurchaseDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossUndiscountedClaimLiabilityGrossUndiscountedRmbsSubrogation" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossUndiscountedClaimLiabilityGrossUndiscountedRmbsSubrogation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_NationalPublicFinanceGuaranteeCorporationMember" abstract="true" name="NationalPublicFinanceGuaranteeCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_FairValueAndWeightedAverageUnderlyingRatingOfSecuritiesCoveredByGuaranteesTableTextBlock" abstract="false" name="FairValueAndWeightedAverageUnderlyingRatingOfSecuritiesCoveredByGuaranteesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_PastDuePremiums" abstract="false" name="PastDuePremiums" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ComponentsofVIEGainLossTableTextBlock" abstract="false" name="ComponentsofVIEGainLossTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_ScheduleOfEarningsPerShareTable" abstract="true" name="ScheduleOfEarningsPerShareTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_ReinsuranceRecoverableCreditExposure" abstract="false" name="ReinsuranceRecoverableCreditExposure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_InvestmentPortfolioMember" abstract="true" name="InvestmentPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_UncollateralizedCreditExposureSupportedByUnlimitedUncappedIndemnity" abstract="false" name="UncollateralizedCreditExposureSupportedByUnlimitedUncappedIndemnity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_PaydownofAmbacNote" abstract="false" name="PaydownofAmbacNote" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ComponentsofLossandLossExpenseReservesandSubrogationRecoverableLineItems" abstract="true" name="ComponentsofLossandLossExpenseReservesandSubrogationRecoverableLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_SummaryOfBalanceOfRmbsSubrogationRecoveriesByEstimationApproachTableTextBlock" abstract="false" name="SummaryOfBalanceOfRmbsSubrogationRecoveriesByEstimationApproachTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" abstract="false" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_ScheduleOfBalanceOfSubrogationRecoveriesAndRelatedClaimLiabilitiesByEstimationApproachTable" abstract="true" name="ScheduleOfBalanceOfSubrogationRecoveriesAndRelatedClaimLiabilitiesByEstimationApproachTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_DiscountedOtherSubrogationBeforeReinsuranceAbstract" abstract="true" name="DiscountedOtherSubrogationBeforeReinsuranceAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_AACInsuredGOPBABondsSatisfiedOrEliminated" abstract="false" name="AACInsuredGOPBABondsSatisfiedOrEliminated" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition" abstract="false" name="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_OtherConsumerAssetBackedMember" abstract="true" name="OtherConsumerAssetBackedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_SummaryOfRollforwardOfSubrogationByEstimationApproachTable" abstract="true" name="SummaryOfRollforwardOfSubrogationByEstimationApproachTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_CommonStockRepurchaseAxis" abstract="true" name="CommonStockRepurchaseAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_NetIncurredRMBSSubrogationRecoveries" abstract="false" name="NetIncurredRMBSSubrogationRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_LongtermDebtatparlessamortizeddiscount" abstract="false" name="LongtermDebtatparlessamortizeddiscount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_SummaryOfRollforwardOfSubrogationByEstimationApproachLineItems" abstract="true" name="SummaryOfRollforwardOfSubrogationByEstimationApproachLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_SurveillanceCategoryThreeMember" abstract="true" name="SurveillanceCategoryThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_InvestorOwnedAndPublicUtilitiesMember" abstract="true" name="InvestorOwnedAndPublicUtilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleOfFiniteLivedIntangibleAssetsAmortizationExpenseTable" abstract="true" name="ScheduleOfFiniteLivedIntangibleAssetsAmortizationExpenseTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_NumberOfVariableInterestEntitiesConsolidatedDuringThePeriod" abstract="false" name="NumberOfVariableInterestEntitiesConsolidatedDuringThePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ambc_AssuredGuarantyMunicipalCorporationMember" abstract="true" name="AssuredGuarantyMunicipalCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_PercentOfCreditorClawbackOfSUTSubjectToLifetimeCap" abstract="false" name="PercentOfCreditorClawbackOfSUTSubjectToLifetimeCap" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationLossAdjustmentExpensesReserve" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationLossAdjustmentExpensesReserve" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_LegacyFinancialGuaranteeMember" abstract="true" name="LegacyFinancialGuaranteeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_BackgroundAndBasisOfPresentationTable" abstract="true" name="BackgroundAndBasisOfPresentationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_SubrogationByEstimationApproachRollForward" abstract="true" name="SubrogationByEstimationApproachRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_ScheduleOfLoansAndAllowanceForLoanByClassIndividuallyAndCollectivelyEvaluatedForImpairmentLineItems" abstract="true" name="ScheduleOfLoansAndAllowanceForLoanByClassIndividuallyAndCollectivelyEvaluatedForImpairmentLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_AmbacAssuranceCorporationMember" abstract="true" name="AmbacAssuranceCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_PossibleIncreaseinDomesticPublicFinanceLossReserves" abstract="false" name="PossibleIncreaseinDomesticPublicFinanceLossReserves" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ProceedsFromFinancialGuarantyVariableInterestEntityAssets" abstract="false" name="ProceedsFromFinancialGuarantyVariableInterestEntityAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_AmortizationOfIntangibleAssetsLineItems" abstract="true" name="AmortizationOfIntangibleAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_PercentageOfInvestmentPortfolioValuedUsingExternalPricingServices" abstract="false" name="PercentageOfInvestmentPortfolioValuedUsingExternalPricingServices" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_ChangesRecognizedInResidentialMortgageBackedSecurityAbstract" abstract="true" name="ChangesRecognizedInResidentialMortgageBackedSecurityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_OtherInternationalMember" abstract="true" name="OtherInternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_BondVintageYearDomain" abstract="true" name="BondVintageYearDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityPurchases" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityPurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_AmbacAssuranceMember" abstract="true" name="AmbacAssuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_EstimatedFuturePremiumPaymentsMaximumDiscountedRate" abstract="false" name="EstimatedFuturePremiumPaymentsMaximumDiscountedRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_ScheduleofIncomeBeforeIncomeTaxDomesticandForeignTable" abstract="true" name="ScheduleofIncomeBeforeIncomeTaxDomesticandForeignTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_EquitySecuritiesExcludedFromFairValue" abstract="false" name="EquitySecuritiesExcludedFromFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_SummaryOfCededParAndNetUnsecuredReinsuranceRecoverableLineItems" abstract="true" name="SummaryOfCededParAndNetUnsecuredReinsuranceRecoverableLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_BackgroundAndBasisOfPresentationLineItems" abstract="true" name="BackgroundAndBasisOfPresentationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_DerivativeAssetsNetAmount" abstract="false" name="DerivativeAssetsNetAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_FinancialGuaranteesInForceTextBlock" abstract="false" name="FinancialGuaranteesInForceTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_FixedIncomeInvestmentsAndOtherInvestmentsMember" abstract="true" name="FixedIncomeInvestmentsAndOtherInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ChangesInAccumulatedOtherComprehensiveIncomeRollForward" abstract="true" name="ChangesInAccumulatedOtherComprehensiveIncomeRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_ScheduleofDeferredIncomeTaxAssetsandLiabilitiesLineItems" abstract="true" name="ScheduleofDeferredIncomeTaxAssetsandLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityDiscountOnRmbsSubrogation" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityDiscountOnRmbsSubrogation" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_DeterminationDateDomain" abstract="true" name="DeterminationDateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_PublicFinanceMember" abstract="true" name="PublicFinanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityGainLossIncludedInEarnings" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityGainLossIncludedInEarnings" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_MortgageBackedAndHomeEquityMember" abstract="true" name="MortgageBackedAndHomeEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_BalanceOfRmbsSubrogationRecoveriesNetOfReinsurance" abstract="false" name="BalanceOfRmbsSubrogationRecoveriesNetOfReinsurance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_PledgedAsSecurityUpToDomain" abstract="true" name="PledgedAsSecurityUpToDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_IncomeLossOnVariableInterestEntitiesMember" abstract="true" name="IncomeLossOnVariableInterestEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ImpactofVIEConsolidationonGrossLossandLossReserves" abstract="false" name="ImpactofVIEConsolidationonGrossLossandLossReserves" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossUndiscountedClaimLiabilityGrossUndiscountedOtherSubrogation" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossUndiscountedClaimLiabilityGrossUndiscountedOtherSubrogation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_AfgMember" abstract="true" name="AfgMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityIssues" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilityIssues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_PledgedSecurityUpToDomain" abstract="true" name="PledgedSecurityUpToDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_InterimDistributionToAACOfCash" abstract="false" name="InterimDistributionToAACOfCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ScheduleOfBalanceOfRmbsSubrogationRecoveriesAndRelatedClaimLiabilitiesByEstimationApproachLineItems" abstract="true" name="ScheduleOfBalanceOfRmbsSubrogationRecoveriesAndRelatedClaimLiabilitiesByEstimationApproachLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_SurveillanceCategoryOneMember" abstract="true" name="SurveillanceCategoryOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_StockholdersEquityAfterPossibleIncreaseinDomesticPublicFinanceLossReserves" abstract="false" name="StockholdersEquityAfterPossibleIncreaseinDomesticPublicFinanceLossReserves" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_SovereignAndSubSovereignMember" abstract="true" name="SovereignAndSubSovereignMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_AACAssertedPensionLiabilityOverstatement" abstract="false" name="AACAssertedPensionLiabilityOverstatement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_FairValueOfAssetsAndLiabilitiesMeasuredOnNonRecurringBasisLineItems" abstract="true" name="FairValueOfAssetsAndLiabilitiesMeasuredOnNonRecurringBasisLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_NumberOfConsolidatedVariableInterestEntities" abstract="false" name="NumberOfConsolidatedVariableInterestEntities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ambc_GlobalStructuredFinanceMember" abstract="true" name="GlobalStructuredFinanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_InternationalFinanceMember" abstract="true" name="InternationalFinanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleofCashFlowSupplementalInformationAxis" abstract="true" name="ScheduleofCashFlowSupplementalInformationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_LifetimeCapOfCreditorClawbackOfSUT" abstract="false" name="LifetimeCapOfCreditorClawbackOfSUT" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilitySales" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilitySales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_InsuranceTable" abstract="true" name="InsuranceTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_PercentageOfInvestmentPortfolioValuedUsingInternalValuationModels" abstract="false" name="PercentageOfInvestmentPortfolioValuedUsingInternalValuationModels" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_SitkaHoldingsLLCMember" abstract="true" name="SitkaHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_VariableInterestEntityClassificationOfCarryingAmountAssetsAbstract" abstract="true" name="VariableInterestEntityClassificationOfCarryingAmountAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_ScheduleofIncomeBeforeIncomeTaxDomesticandForeignLineItems" abstract="true" name="ScheduleofIncomeBeforeIncomeTaxDomesticandForeignLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_PresentValueofExpectedNetCashFlowsClaimsandLossExpensesMember" abstract="true" name="PresentValueofExpectedNetCashFlowsClaimsandLossExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_LossReservesClaimLiabilityMember" abstract="true" name="LossReservesClaimLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossUndiscountedClaimLiability" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationGrossUndiscountedClaimLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ManagingGeneralAgencyUnderwriterMember" abstract="true" name="ManagingGeneralAgencyUnderwriterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityDiscountOnOtherSubrogation" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityDiscountOnOtherSubrogation" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_NewPRHTABondsToBeIssued" abstract="false" name="NewPRHTABondsToBeIssued" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_SurveillanceCategoryTwoMember" abstract="true" name="SurveillanceCategoryTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_PercentOfParOfAACsOutstandingAACInsuredPRIFAEliminated" abstract="false" name="PercentOfParOfAACsOutstandingAACInsuredPRIFAEliminated" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_AffinityProductsMember" abstract="true" name="AffinityProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_NetChangeInFairValueOfCreditDerivativesMember" abstract="true" name="NetChangeInFairValueOfCreditDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_NetgainslossesonderivativecontractsDomain" abstract="true" name="NetgainslossesonderivativecontractsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_GlobalPublicFinanceMember" abstract="true" name="GlobalPublicFinanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_OtherInvestmentsIncome" abstract="false" name="OtherInvestmentsIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityOtherSubrogation" abstract="false" name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationReductionsOfGrossClaimLiabilityOtherSubrogation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ReductionInLongTermDebtThroughLongTermDebtExchange" abstract="false" name="ReductionInLongTermDebtThroughLongTermDebtExchange" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_InterimDistributionToAACOfNotionalValueOfClawbackCVI" abstract="false" name="InterimDistributionToAACOfNotionalValueOfClawbackCVI" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_PremiumsReceivablebyRiskClassificationCodeTableTextBlock" abstract="false" name="PremiumsReceivablebyRiskClassificationCodeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_VariableInterestEntityNotPrimaryBeneficiaryTableTextBlock" abstract="false" name="VariableInterestEntityNotPrimaryBeneficiaryTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_EquitySecuritiesExcludedFromFairValueMember" abstract="true" name="EquitySecuritiesExcludedFromFairValueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_AmortizedCostAndFairValueDebtSecuritiesAbstract" abstract="true" name="AmortizedCostAndFairValueDebtSecuritiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilitySettlements" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOrLiabilitySettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_PublicFinancePuertoRicoNetParOutstanding" abstract="false" name="PublicFinancePuertoRicoNetParOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_LossandLossReservesAxis" abstract="true" name="LossandLossReservesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="ambc_PremiumsReceivableForFinancialGuaranteesTableTextBlock" abstract="false" name="PremiumsReceivableForFinancialGuaranteesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_VariableInterestEntityNonconsolidatedCarryingAmountDerivativeNetAssetsOrLiabilities" abstract="false" name="VariableInterestEntityNonconsolidatedCarryingAmountDerivativeNetAssetsOrLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_OtherRevenuesOperating" abstract="false" name="OtherRevenuesOperating" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ScheduleofVariableInterestEntitiesAssetsandLiabilitiesTableTextBlock" abstract="false" name="ScheduleofVariableInterestEntitiesAssetsandLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="ambc_PaydownofFinancialGuarantyVariableInterestEntityLiabilities" abstract="false" name="PaydownofFinancialGuarantyVariableInterestEntityLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_BusinessCombinationRedeemableNoncontrollingPercentage" abstract="false" name="BusinessCombinationRedeemableNoncontrollingPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="ambc_PWICMember" abstract="true" name="PWICMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_LessDiscountedRmbsSubrogationBeforeReinsuranceAbstract" abstract="true" name="LessDiscountedRmbsSubrogationBeforeReinsuranceAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ambc_OtherStructuredFinanceMember" abstract="true" name="OtherStructuredFinanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_ScheduleofCashFlowSupplementalInformationDomain" abstract="true" name="ScheduleofCashFlowSupplementalInformationDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_RetireeCommitteeAssertedPensionLiabilities" abstract="false" name="RetireeCommitteeAssertedPensionLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_ExchangeOfInvestmentsInPuertoRicoBondsForNewSecuritiesIssuedInTheRestructuringTransactions" abstract="false" name="ExchangeOfInvestmentsInPuertoRicoBondsForNewSecuritiesIssuedInTheRestructuringTransactions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ambc_SitkaHoldingsMember" abstract="true" name="SitkaHoldingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ambc_DerivativeGainLossonDerivativesTotalNet" abstract="false" name="DerivativeGainLossonDerivativesTotalNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>

2 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/02/20  Ambac Financial Group Inc.        10-K       12/31/19  152:36M
 5/01/13  Ambac Financial Group Inc.        8-A12B                 5:1.6M                                   Toppan Merrill/FA
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