UnitedHealth Group Incorporated operates as a diversified health care company in the United States. The company operates through four segments: UnitedHealthcare, Optum Health, Optum Insight, and Optum Rx. The UnitedHealthcare segment offers consumer-oriented health benefit plans and services for national employers, public sector employers, mid-sized employers, small businesses, and individuals; health care coverage, and health and well-being services to individuals age 50 and older addressing their needs; Medicaid plans, children's health insurance and health care programs; and health and dental benefits, and hospital and clinical services, as well as health care benefits products and services to state programs caring for the economically disadvantaged, medically underserved, and those without the benefit of employer-funded health care coverage. The Optum Health segment provides care delivery, care management, wellness and consumer engagement, and health financial services patients, consumers, care delivery systems, providers, employers, payers, and public-sector entities. The Optum Insight segment offers software and information products, advisory consulting arrangements, and managed services outsourcing contracts to hospital systems, physicians, health plans, governments, life sciences companies, and other organizations. The Optum Rx segment provides pharmacy care services and programs, including retail network contracting, home delivery, specialty and community health pharmacy services, infusion, and purchasing and clinical capabilities, as well as develops programs in the areas of step therapy, formulary management, drug adherence, and disease/drug therapy management. UnitedHealth Group Incorporated was founded in 1974 and is based in Minnetonka, Minnesota.

Elevance Health, Inc., together with its subsidiaries, operates as a health benefits company in the United States. The company operates through four segments: Health Benefits, CarelonRx, Carelon Services, and Corporate & Other. It offers a variety of health plans and services to program members; health products; an array of fee-based administrative managed care services; and specialty and other insurance products and services, such as stop loss, dental, vision, life, disability, and supplemental health insurance benefits. The company operates in the pharmacy services business; and markets and offers pharmacy services, including pharmacy benefit management, as well as home delivery and specialty pharmacies, claims adjudication, formulary management, pharmacy networks, rebate administration, a prescription drug database, and member services. In addition, it provides healthcare-related services and capabilities, including utilization management, behavioral health, integrated care delivery, palliative care, payment integrity services, subrogation services, and health and wellness programs, as well as services related to data management, information technology, and business operations. Further, the company is involved in the National Government Services business. The company provides its services under the Anthem Blue Cross and Blue Shield, Wellpoint, and Carelon brand names. The company was formerly known as Anthem, Inc. and changed its name to Elevance Health, Inc. in June 2022. Elevance Health, Inc. was incorporated in 2001 and is headquartered in Indianapolis, Indiana.

CVS Health Corporation provides health solutions in the United States. It operates through Health Care Benefits, Health Services, and Pharmacy & Consumer Wellness segments. The Health Care Benefits segment offers traditional, voluntary, and consumer-directed health insurance products and related services. It serves employer groups, individuals, college students, part-time and hourly workers, health plans, health care providers, governmental units, government-sponsored plans, labor groups, and expatriates. The Health Services segment offers pharmacy benefit management solutions, including plan design and administration, formulary management, retail pharmacy network management, specialty and mail order pharmacy, clinical, disease management, and medical spend management services. It serves employers, insurance companies, unions, government employee groups, health plans, prescription drug plans, Medicaid managed care plans, CMS, plans offered on public health insurance, and other sponsors of health benefit plans. The Pharmacy & Consumer Wellness segment sells prescription and over-the-counter drugs, consumer health and beauty products, and personal care products. This segment also distributes prescription drugs; and provides related pharmacy consulting and other ancillary services to care facilities and other care settings. It operates online retail pharmacy websites, LTC pharmacies and on-site pharmacies, retail specialty pharmacy stores, compounding pharmacies and branches for infusion and enteral nutrition services. The company was formerly known as CVS Caremark Corporation and changed its name to CVS Health Corporation in September 2014. CVS Health Corporation was incorporated in 1996 and is headquartered in Woonsocket, Rhode Island.

Cencora, Inc. sources and distributes pharmaceutical products in the United States and internationally. The company's U.S. Healthcare Solutions segment distributes pharmaceuticals, over-the-counter healthcare products, home healthcare supplies and equipment, and related services to acute care hospitals and health systems, independent and chain retail pharmacies, mail order pharmacies, medical clinics, long-term care and alternate site pharmacies, and other customers; provides pharmacy management, staffing, and other consulting services; supply management software to retail and institutional healthcare providers; packaging solutions to institutional and retail healthcare providers; clinical trial support, product post-approval, and commercialization support services; data analytics, outcomes research, and other services for biotechnology and pharmaceutical manufacturers; pharmaceuticals, vaccines, parasiticides, diagnostics, micro feed ingredients, and other products to the companion animal and production animal markets; and sales force services to manufacturers. This segment also distributes plasma and other blood products, injectable pharmaceuticals, vaccines, and other specialty products; and offers other services to physicians who specialize in various disease states, such as oncology, as well as to other healthcare providers, including hospitals and dialysis clinics. Its International Healthcare Solutions segment provides international pharmaceutical wholesale and related service, and global commercialization services; distributes pharmaceuticals, other healthcare products, and related services to pharmacies, doctors, health centers, and hospitals; and offers specialty transportation and logistics services for the biopharmaceutical industry. The company was formerly known as AmerisourceBergen Corporation and changed its name to Cencora, Inc. in August 2023. Cencora, Inc. was founded in 1871 and is headquartered in Conshohocken, Pennsylvania.

The Hartford Financial Services Group, Inc., together with its subsidiaries, provides insurance and financial services to individual and business customers in the United States, the United Kingdom, and internationally. Its Commercial Lines segment offers insurance coverages, including workers' compensation, property, automobile, general and professional liability, package business, umbrella, fidelity and surety, marine, livestock, accident, health, and reinsurance through regional offices, branches, sales and policyholder service centers, independent retail agents and brokers, wholesale agents, and reinsurance brokers. The company's Personal Lines segment provides automobile, homeowners, and personal umbrella coverages through direct-to-consumer channels and independent agents. Its Property & Casualty Other Operations segment offers coverage for asbestos and environmental exposures. The company's Group Benefits segment provides group life, disability, and other group coverages to members of employer groups, associations, and affinity groups through direct insurance policies; reinsurance to other insurance companies; employer paid and voluntary product coverages; disability underwriting, administration, and claims processing to self-funded employer plans; and leave management solution. This segment also distributes its group insurance products and services through brokers, consultants, third-party administrators, trade associations, and private exchanges. Its Hartford Funds segment offers managed mutual funds across various asset classes; and exchange-traded funds through broker-dealer organizations, independent financial advisers, defined contribution plans, financial consultants, bank trust groups, and registered investment advisers, as well as investment management, distribution, and administrative services, such as product design, implementation, and oversight. The company was founded in 1810 and is headquartered in Hartford, Connecticut.

Humana Inc., together with its subsidiaries, provides medical and specialty insurance products in the United States. It operates through two segments, Insurance and CenterWell. The company offers medical and supplemental benefit plans to individuals. It has a contract with Centers for Medicare and Medicaid Services to administer the Limited Income Newly Eligible Transition prescription drug plan program; and contracts with various states to provide Medicaid, dual eligible, and long-term support services benefits. In addition, the company provides commercial fully-insured medical and specialty health insurance benefits comprising dental, vision, life insurance, and other supplemental health benefits, as well as administrative services only products to individuals and employer groups; military services, such as TRICARE T2017 East Region contract; and engages in the operations of pharmacy benefit manager business. Further, it operates pharmacies and senior focused primary care centers; and offers home solutions services, such as home health, hospice, and other services to its health plan members, as well as to third parties. The company sells its products through employers and employees, independent brokers and agents, sales representatives, and digital insurance agencies. The company was formerly known as Extendicare Inc. and changed its name to Humana Inc. in April 1974. Humana Inc. was founded in 1961 and is headquartered in Louisville, Kentucky.

Unum Group, together with its subsidiaries, provides financial protection benefit solutions primarily in the United States, the United Kingdom, Poland, and internationally. It operates through Unum US, Unum International, Colonial Life, and Closed Block segment. The company offers group long-term and short-term disability, group life, and accidental death and dismemberment products; supplemental and voluntary products, such as individual disability, voluntary benefits, and dental and vision products; and accident, sickness, disability, life, and cancer and critical illness products. It also provides group pension, individual life and corporate-owned life insurance, reinsurance pools and management operations, and other miscellaneous products. The company sells its products primarily to employers for the benefit of employees. It sells its products through field sales personnel, independent brokers, consultants, and independent contractor agent sales force and brokers. Unum Group was founded in 1848 and is based in Chattanooga, Tennessee.

CNO Financial Group, Inc., through its subsidiaries, develops, markets, and administers health insurance, annuity, individual life insurance, insurance products, and financial services for senior and middle-income markets in the United States. It offers Medicare supplement, supplemental health, and long-term care insurance policies; life insurance; and annuities, as well as Medicare advantage plans to individuals through phone, online, mail, and face-to-face. The company also focuses on sale of voluntary benefit life and health insurance products for businesses, associations, and other membership groups by interacting with customers at their place of employment. In addition, it provides fixed indexed annuities; fixed interest annuities, including fixed rate single and flexible premium deferred annuities; single premium immediate annuities; supplemental health products, such as specified disease, accident, and hospital indemnity products; and long-term care plans primarily to retirees and older self-employed individuals in the middle-income market. Further, the company offers universal life and other interest-sensitive life products; and traditional life policies that include whole life, graded benefit life, term life, and single premium whole life products, as well as graded benefit life insurance products. It markets its products under the Bankers Life, Washington National, and Colonial Penn brand names. The company was founded in 1979 and is headquartered in Carmel, Indiana.