Ambac Assurance Corporation
Ambac Assurance Corporation is a US-based financial guarantee insurance company founded in 1971 that has operated in run-off since 2008, managing its legacy insured portfolio of municipal and structured finance obligations under NYSE-listed parent Octave Specialty Group Inc.
- Company typePublic
- Founded1971
- HeadquartersJersey City, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Ambac Assurance Corporation does
Ambac Assurance Corporation (AAC) is a US-based financial guarantee insurance company founded in 1971 and headquartered in Jersey City, New Jersey. The company historically provided financial guarantee insurance on municipal and structured finance obligations, protecting bondholders against default and enhancing credit profiles for issuers in both the public and private sectors. AAC and its wholly-owned UK subsidiary, Ambac UK Limited (AUK), have operated in run-off since 2008, meaning they no longer underwrite new business and instead focus on ongoing surveillance, remediation, and management of the existing insured portfolio. As of June 30, 2025, the company held $2.7 billion in claims-paying resources.
AAC operates as a subsidiary of Octave Specialty Group Inc., a holding company listed on the NYSE, having been separated from its former parent Ambac Financial Group, Inc., with 'Ambac' continuing as a licensed trademark. The company maintains offices in Jersey City (headquarters), Greenwich, Connecticut, and London (through AUK), with employee headcount in the 51-100 range. Revenue is generated through premiums collected on the legacy insured portfolio under a subscription/recurring model, with pricing historically quote-based and negotiated on a per-transaction basis. The GTM motion is enterprise field sales targeting institutional clients (municipalities, corporate issuers, structured finance counterparties), though such new origination activity has been suspended since 2008. Leadership comprises Chairman Greg Share, CEO Yadin Rozov, President and CRO David Barranco, CFO Robert Eisman, General Counsel George Wilkinson, CIO Mike Minnich (per company website; the LinkedIn profile lists Shilpa Deshpande as CIO and Mike Minnich with a separate title), and CIO Shilpa Deshpande.
AAC's strategic posture is defensive and stewardship-oriented, focused on managing the run-off of legacy obligations, regulatory compliance, statutory filings, and governance. Notable recent activity includes the appointment of Independent Directors Robert A. Kerzner and Linda Ventresca in 2025 and the dismissal of a 2017 RICO lawsuit related to military housing loans in the Southern District of New York. The company does not appear to be pursuing growth, new product development, or significant geographic expansion, consistent with its run-off mandate under Octave Specialty Group.
Ambac Assurance Corporation firmographics
Firmographics- Name
- Ambac Assurance Corporation
- Legal name
- Ambac Assurance Corporation
- Website
- https://ambaccorp.com
- Company type
- Public
- Founded year
- 1971
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Ambac Assurance Corporation is a US-based financial guarantee insurance company founded in 1971 that has operated in run-off since 2008, managing its legacy insured portfolio of municipal and structured finance obligations under NYSE-listed parent Octave Specialty Group Inc.
- Ownership category
- akta.pro rank
Where Ambac Assurance Corporation is headquartered
LocationHeadquarters
- HQ city
- Jersey City
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Ambac Assurance Corporation business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Operations, Personnel, Technology or R&D, Others
Revenue model
- Financial Guarantee Insurance Premiums: Ambac Assurance Corporation generates revenue through premiums collected for providing financial guarantee insurance on bonds and other debt obligations. As a financial guarantee insurer, the company collects premiums from issuers and investors seeking credit protection on municipal bonds, corporate debt, and other structured finance obligations.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels1 record
Ambac Assurance Corporation product offering
Product offeringCore offering
Ambac Assurance Corporation provides financial guarantee insurance that protects bondholders against default on municipal and corporate debt obligations, enhancing credit ratings and lowering borrowing costs for issuers. Both AAC and its UK subsidiary Ambac UK Limited (AUK) have been in run-off since 2008, focusing on ongoing surveillance and remediation activities to manage the existing insured portfolio rather than writing new business. As of June 30, 2025, the company holds $2.7 billion in claims-paying resources.
Product overview
Ambac Assurance Corporation is a provider of financial guarantee insurance offering a single core product line. The company operates through its main entity and its UK subsidiary Ambac UK Limited (AUK), which together provide financial guarantees globally supporting obligations across public and private sectors. AAC and AUK have been in run-off since 2008, focusing primarily on ongoing surveillance and remediation activities to manage the run-off of the insured portfolio.
Differentiator
Problem solved
Functional benefit
Products and services
- Financial Guarantee Insurance Financial guarantee insurance protecting bondholders against default on debt obligations across both public and private sectors, including municipal bonds, corporate debt, and structured finance obligations. The insurance enhances credit ratings of insured obligations and reduces borrowing costs for issuers. As of June 30, 2025, AAC holds $2.7 billion in claims-paying resources.
Companies that use Ambac Assurance Corporation
Customer profileSegments2 records
Ideal customer profiles2 records
Ambac Assurance Corporation technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Ambac Assurance Corporation partnerships and signals
Strategic signalScale indicators2 records
Recent moves5 records
Expansion highlights3 records
Ambac Assurance Corporation competitors and assessment
Company assessmentBroad incumbents
- Essent Group Ltd. Private mortgage insurance and title insurance provider. Comparable as a regulated credit enhancement insurer with similar institutional structure and capital adequacy requirements.
- Radian Group Inc. Private mortgage insurance and mortgage credit risk transfer provider. Operates in adjacent credit enhancement insurance with similar institutional client base and regulatory profile to financial guarantee insurance.
- Genworth Financial, Inc. Insurance holding company whose U.S. mortgage insurance business (Enact) and broader portfolio operate in adjacent credit guarantee insurance; comparable in regulatory burden and long-tail liability management.
- MGIC Investment Corporation: U.S. private mortgage insurer providing credit enhancement on residential mortgages. Comparable as a regulated credit guarantee insurer with similar capital, reserves, and regulatory capital frameworks.
- Berkshire Hathaway Inc. Massive insurance conglomerate whose specialty and reinsurance operations (General Re, Berkshire Hathaway Specialty) include credit and financial guarantee-adjacent capabilities. Provides a scale benchmark for insurance capital deployment.
Direct peers
- Syncora Guarantee Inc. Financial guarantee insurer operating in run-off since 2008, insuring municipal and structured finance obligations. Directly comparable business model and post-crisis trajectory to Ambac Assurance.
- Financial Guaranty Insurance Company (FGIC): Bond insurer that emerged from rehabilitation in 2013 and continues managing a run-off municipal and structured finance book. One of the few remaining U.S. financial guarantee insurers and a direct operational comparable.
- MBIA Inc. Pre-2008 financial guarantee peer whose U.S. municipal business was separated into National Public Finance Guarantee Corporation; structured finance arm remains in run-off. Highly comparable post-crisis restructuring trajectory to Ambac.
- Assured Guaranty Ltd. Active financial guarantee insurance company insuring municipal and structured finance obligations. Closest direct peer to Ambac, providing a benchmark for run-off vs. active FG insurance economics and capital deployment strategy.
Emerging players
- Build America Mutual Assurance Company: Post-crisis mutual bond insurer providing financial guarantee insurance on U.S. public purpose obligations. Represents the newer generation of FG insurers filling the void left by Ambac's run-off.
Market position
Weaknesses5 records
Competitive moat2 records
Key highlights6 records
Customer concentration
Ambac Assurance Corporation social profiles
Digital presenceAmbac Assurance Corporation financial estimates
Financial estimateRevenue estimate
Valuation estimate
Ambac Assurance Corporation leadership team
Management profileNumber of profiles
Profiles7 records
Ambac Assurance Corporation subsidiaries and ownership
Company hierarchySubsidiaries1 record
Ambac Assurance Corporation funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Ambac Assurance Corporation M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Ambac Assurance Corporation
What does Ambac Assurance Corporation do?
Ambac Assurance Corporation provides financial guarantee insurance that protects bondholders against default on municipal and corporate debt obligations, enhancing credit ratings and lowering borrowing costs for issuers. Both AAC and its UK subsidiary Ambac UK Limited (AUK) have been in run-off since 2008, focusing on ongoing surveillance and remediation activities to manage the existing insured portfolio rather than writing new business. As of June 30, 2025, the company holds $2.7 billion in claims-paying resources.
Is Ambac Assurance Corporation a public or private company?
Ambac Assurance Corporation is a public company. It is classified as corporate owned and is currently operating.
When was Ambac Assurance Corporation founded?
Ambac Assurance Corporation was founded in 1971. It employs 11 to 50 people.
Where is Ambac Assurance Corporation based?
Ambac Assurance Corporation is headquartered in Jersey City, United States, in the North America region.
How does Ambac Assurance Corporation make money?
One revenue line is on record: financial Guarantee Insurance Premiums.
Who are Ambac Assurance Corporation's main competitors?
Broad incumbents on record are Essent Group Ltd., Radian Group Inc., Genworth Financial, Inc., MGIC Investment Corporation and Berkshire Hathaway Inc.. Direct peers are Syncora Guarantee Inc., Financial Guaranty Insurance Company (FGIC), MBIA Inc. and Assured Guaranty Ltd.. Build America Mutual Assurance Company is listed as an emerging player.
Does Ambac Assurance Corporation have an API?
No public API is recorded for Ambac Assurance Corporation.