aid: capmac
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/capmac.png
name: CapMAC Holdings
description: CapMAC Holdings Inc. (Capital Markets Assurance Corporation) was a New York-based holding
  company that provided financial guaranty and surety insurance for structured securities worldwide,
  primarily asset-backed securities, alongside structured financial solutions, advisory and structuring
  services, and investment management. Founded in 1973 and headquartered at 885 Third Avenue in New York
  City, it was a Canaan Partners portfolio company. MBIA Inc. acquired CapMAC Holdings in a stock swap
  valued at more than $500 million, completing the merger on February 17, 1998, after which CapMAC
  operated as an indirect wholly-owned MBIA subsidiary. Capital Markets Assurance Corporation was
  merged into MBIA Insurance Corporation during the third quarter of 2010 and ceased to exist as a
  separately licensed insurer. The company is defunct and operates no website, developer program, or
  API surface; the capmac.com domain is an unrelated parked domain listed for sale.
url: https://raw.githubusercontent.com/api-evangelist/capmac/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
x-tier: stub
x-tier-reason: defunct-no-api-surface
x-status: defunct
x-founded: '1973'
x-headquarters: New York, New York, United States
x-acquired-by: MBIA Inc.
x-acquired-date: '1998-02-17'
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Financial Services
- Insurance
- Financial Guaranty
- Structured Finance
- Asset-Backed Securities
- Defunct
- Acquired
apis: []
common:
- type: CompanyProfile
  url: https://www.canaan.com/companies/capmac-holdings
- type: Acquirer
  url: https://investor.mbia.com/investor-relations/corporate-profile/history/default.aspx
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: nochange
  artifacts_added: 0
  pass: local-v1
  finding: Defunct entity, merged into MBIA Inc. 1998-02-17; CMAC dissolved into MBIA Insurance Corp
    Q3 2010. No live domain, developer portal, or API surface. capmac.com is a parked for-sale domain
    (HTTP 200, unrelated). No artifacts generated - no fabrication.