Arch Capital Group Ltd., together with its subsidiaries, provides insurance, reinsurance, and mortgage insurance products worldwide. The company's Insurance segment offers primary and excess casualty coverages; loss sensitive primary casualty insurance programs; directors' and officers' liability, errors and omissions liability, employment practices and fiduciary liability, crime, professional indemnity, and other financial related coverages; medical professional and general liability insurance coverages; and workers' compensation and umbrella liability, as well as commercial automobile and inland marine products. It also provides property, energy, marine, and aviation insurance; travel insurance; accident, disability, and medical plan insurance coverages; captive insurance programs; employer's liability; contract and commercial surety coverages; and collateral protection, debt cancellation, and service contract reimbursement products. This segment markets its products through a group of licensed independent retail and wholesale brokers. Its Reinsurance segment provides casualty reinsurance for third party liability exposures; marine and aviation; motor reinsurance, whole account multi-line treaties, cyber, trade credit, surety, accident and health, workers' compensation catastrophe, agriculture, trade credit, and political risk products; reinsurance protection for catastrophic losses, and personal lines and commercial property exposures; life reinsurance; casualty clash; and risk management solutions. This segment markets its reinsurance products through brokers. The company's Mortgage segment offers direct mortgage insurance and mortgage reinsurance. The company was founded in 1995 and is based in Pembroke, Bermuda.

Everest Group, Ltd., through its subsidiaries, provides reinsurance and insurance products in the United States, Europe, and internationally. The company operates through two segment, Insurance and Reinsurance. The Reinsurance segment writes property and casualty reinsurance; and specialty lines of business through reinsurance brokers, as well as directly with ceding companies in the United States, Bermuda, Ireland, Canada, Singapore, Switzerland, and the United Kingdom. The Insurance Operations segment writes property and casualty insurance directly, as well as through brokers, surplus lines, and general agents in the United States, Bermuda, Canada, Europe, South America, Singapore, France, Germany, Spain, Canada, Chile, the United Kingdom, Ireland, and the Netherlands. The company also provides treaty and facultative reinsurance products; admitted and non-admitted insurance products; and accident and health, specialty underwriters, eversports and entertainment, and surety and credit, marine and aviation, as well as structured and property hybrid solutions. In addition, it offers commercial property and casualty insurance products through wholesale and retail brokers, surplus lines brokers, and program administrators. The company was formerly known as Everest Re Group, Ltd. and changed its name to Everest Group, Ltd. in July 2023.Everest Group, Ltd., was founded in 1973 and is headquartered in Hamilton, Bermuda.

MGIC Investment Corporation, through its subsidiaries, provides private mortgage insurance, other mortgage credit risk management solutions, and ancillary services to lenders and government sponsored entities in the United States, the District of Columbia, Puerto Rico, and Guam. The company offers primary mortgage insurance that provides mortgage default protection on individual loans, as well as covers unpaid loan principal, delinquent interest, and various expenses associated with the default and subsequent foreclosure. It also provides pool insurance for secondary market mortgage transactions; and contract underwriting services, as well as reinsurance. The company serves originators of residential mortgage loans, including savings institutions, commercial banks, mortgage brokers, credit unions, mortgage bankers, and other lenders. MGIC Investment Corporation was founded in 1957 and is headquartered in Milwaukee, Wisconsin.

Enact Holdings, Inc. operates as a private mortgage insurance company in the United States. It engages in writing and assuming residential mortgage guaranty insurance. The company also offers private mortgage insurance products primarily insuring prime-based, individually underwritten residential mortgage loans; contract underwriting services for mortgage lenders; and mortgage-related reinsurance products. It primarily serves originators of residential mortgage loans. The company was formerly known as Genworth Mortgage Holdings, Inc. and changed its name to Enact Holdings, Inc. in May 2021. Enact Holdings, Inc. was founded in 1981 and is headquartered in Raleigh, North Carolina. Enact Holdings, Inc. operates as a subsidiary of Genworth Holdings Inc.

Radian Group Inc., together with its subsidiaries, engages in the mortgage and real estate services business in the United States. It operates through two segments, Mortgage Insurance and Homegenius segments. The Mortgage Insurance segment aggregates, manages, and distributes U.S. mortgage credit risk for mortgage lending institutions and mortgage credit investors, through private mortgage insurance on residential first-lien mortgage loans; and other credit risk management solutions, including contract underwriting. The Homegenius segment offers title services, including a suite of insurance and non-insurance titles; tax and title data, centralized recording, document retrieval, and default curative title services; deed and property reports; closing and settlement services; mortgage underwriting and processing; escrow; appraisal management; and real estate brokerage. This segment also provides real estate valuation products and services; asset management services for managing real estate owned properties, which includes a web-based workflow solution; and a suite of real estate technology products and services to facilitate real estate transactions, such as proprietary platforms as a service solution. It serves mortgage originators, such as mortgage bankers, commercial banks, savings institutions, credit unions, and community banks; and consumers, mortgage lenders, mortgage and real estate investors, government-sponsored enterprises, real estate brokers and agents, and corporations for their employees. The company was formerly known as CMAC Investment Corp. and changed its name to Radian Group Inc. in June 1999. Radian Group Inc. was founded in 1977 and is headquartered in Wayne, Pennsylvania.

White Mountains Insurance Group, Ltd., through its subsidiaries, provides insurance and other financial services in the United States. The company operates through HG Global/BAM, Ark/WM Outrigger, Kudu, and Other Operations segments. The HG Global/BAM segment provides insurance on municipal bonds issued to finance public purposes, such as schools, utilities, and transportation facilities, as well as reinsurance protection services. The Ark/WM Outrigger segment offers reinsurance and insurance, including property, marine and energy, accident and health, casualty, and specialty products. The Kudu segment provides capital solutions to boutique asset and wealth managers for generational ownership transfers, management buyouts, acquisitions and growth finances, and legacy partner liquidity, as well as strategic assistance to investees. The Other Operations segment offers insurance solutions to travel industry through broker channel and on a direct-to-consumer basis; and manages separate accounts and pooled investment vehicles for insurance-linked securities sectors, including catastrophe bonds, collateralized reinsurance investments, and industry loss warranties of third-party clients. White Mountains Insurance Group, Ltd. was incorporated in 1980 and is headquartered in Hamilton, Bermuda.

NMI Holdings, Inc. provides private mortgage guaranty insurance services in the United States. The company offers mortgage insurance services, such as primary and pool insurance; and outsourced loan review services to mortgage loan originators. It serves national and regional mortgage banks, money center banks, credit unions, community banks, builder-owned mortgage lenders, internet-sourced lenders, and other non-bank lenders. The company was incorporated in 2011 and is headquartered in Emeryville, California.

Hamilton Insurance Group, Ltd., through its subsidiaries, provides underwriting specialty insurance and reinsurance risks in Bermuda and internationally. The company operates Hamilton Global Specialty, Hamilton Select, and Hamilton Re underwriting platforms. The company offers casualty reinsurance products, such as commercial motor, general liability, healthcare, multiline, personal motor, professional liability, umbrella and excess casualty, and worker's compensation and employer's liability reinsurance; property reinsurance and insurance; and specialty reinsurance solutions, including accident and health, aviation and space, crisis management, mortgage, financial lines, marine and energy, and multiline specialty. In addition, it offers accident and health, cyber, energy, environmental, financial lines, fine art and specie, kidnap and ransom, mergers and acquisitions, marine and energy liability, political risk and violence, professional liability, property binders, property direct and facultative, professional lines, space, upstream energy, excess casualty, war and terrorism, allied medical, management liability, medical professionals, general liability, products liability and contractors, and small business casualty insurance plans, as well as surety and treaty reinsurance products. The company was incorporated in 2013 and is headquartered in Pembroke, Bermuda.