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United Guaranty Corporation (UGC) was a prominent private mortgage insurance company in the United States, founded in 1963. Headquartered in Greensboro, North Carolina, it played a significant role in the U.S. housing market by providing mortgage insurance that protected lenders and investors from losses resulting from mortgage defaults. This insurance facilitated homeownership for many by enabling borrowers to obtain mortgages with lower down payments. For many years, United Guaranty was a subsidiary of American International Group (AIG). In August 2016, Arch Capital Group Ltd. (Arch) announced its agreement to acquire United Guaranty from AIG for approximately $3.4 billion. The acquisition was completed in January 2017, and United Guaranty's operations were subsequently integrated into Arch's existing mortgage insurance business, Arch Mortgage Insurance Company (Arch MI). Today, the legacy of United Guaranty continues within Arch MI, which is a leading provider of mortgage insurance in the U.S. and globally.
Served as the primary corporate headquarters, overseeing all national operations including underwriting, risk management, sales, and administrative functions for the mortgage insurance business.
A prominent multi-story office building in downtown Greensboro, known as the United Guaranty building (now potentially rebranded or multi-tenant), contributing to the city's business district.
A professional and collaborative environment typical of the financial services and insurance industry, focused on risk management, customer service, regulatory compliance, and supporting the housing market. Employees were generally experienced in mortgage finance and insurance.
The Greensboro headquarters was the nerve center for United Guaranty's nationwide operations for decades, symbolizing its significant presence in the mortgage insurance industry and its deep roots in the Greensboro community.
United Guaranty's operations were predominantly focused on the United States domestic mortgage insurance market. It provided credit enhancement solutions to lenders and investors across the nation, facilitating homeownership by mitigating risks associated with residential mortgage loans. While its parent company, AIG, and its subsequent acquirer, Arch Capital Group, have global operations, United Guaranty itself was primarily a U.S.-centric mortgage insurer.
230 N. Elm Street
Greensboro
North Carolina
United States
Address: 2050 Main Street, Suite 500, Irvine, CA 92614 (historical address)
To provide localized support and expertise to clients in the Western U.S. mortgage market, adapting to regional economic conditions and housing trends.
Address: Historical regional office, specific street address may vary.
To support mortgage insurance operations and client relationships within the Central U.S., ensuring efficient service delivery and risk management for that portfolio.
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As of April 2025, United Guaranty Corporation' leadership includes:
United Guaranty Corporation has been backed by several prominent investors over the years, including:
As United Guaranty Corporation was acquired by Arch Capital Group in 2017 and fully integrated into Arch MI, there have been no executive hires or exits for 'United Guaranty Corporation' as a standalone entity in the last 12 months. Significant executive transitions occurred around the 2016-2017 acquisition period.
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Prior to its acquisition by Arch Capital Group, United Guaranty Corporation primarily used the @ugcorp.com domain for its email communications. Common formats in corporations include [first_initial][last] or [first].[last]. Post-acquisition, communications would be via Arch MI or Arch Capital Group domains (e.g., @archmi.com).
[first_initial][last]@ugcorp.com
Format
jdoe@ugcorp.com
Example
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Arch Capital Group Ltd. Press Release • January 3, 2017
Arch Capital Group Ltd. announced the completion of its acquisition of United Guaranty Corporation (UGC) and its subsidiaries from American International Group, Inc. (AIG). UGC was the leading private mortgage insurer in the United States by new insurance written....more
Reuters • August 15, 2016
American International Group Inc said it would sell United Guaranty Corp, its mortgage insurance unit, to Arch Capital Group Ltd for $3.4 billion in cash and stock. This marked a significant step in AIG's plan to streamline its operations and return capital to shareholders....more
Greensboro News & Record • February 1, 2016
AIG announced plans for an initial public offering for a partial sale of Greensboro-based United Guaranty. This was prior to the eventual full sale to Arch Capital Group later in the year....more
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