Aetna Inc. (/??tn?/) is an American managed health care company that sells traditional and consumer directed health care insurance and related services, such as medical, pharmaceutical, dental, behavioral health, long-term care, and disability plans, primarily through employer-paid (fully or partly) insurance and benefit programs, and through Medicare. Since November 28, 2018, the company has been a subsidiary of CVS Health. The company’s network includes 22.1 million medical members, 12.7 million dental members, 13.1 million pharmacy benefit management services members, 1,200,000 health-care professionals, over 690,000 primary care doctors and specialists, and over 5,700 hospitals.[2] Aetna is the direct descendant of Aetna (Fire) Insurance Company of Hartford, Connecticut.[3] The name of the company is based on Mount Etna, at the time the most active volcano in Europe.

American International Group, Inc., also known as AIG, is an American multinational finance and insurance corporation with operations in more than 80 countries and jurisdictions. As of December 31, 2016, AIG companies employed 56,400 people.[4] The company operates through three core businesses: General Insurance, Life & Retirement, and a standalone technology-enabled subsidiary.[5][6][7] General Insurance includes Commercial, Personal Insurance, U.S. and International field operations. Life & Retirement includes Group Retirement, Individual Retirement, Life, and Institutional Markets.[5][6][7] AIG’s corporate headquarters are in New York City and the company also has offices around the world. AIG serves 87% of the Fortune Global 500 and 83% of the Forbes 2000.[8] AIG was ranked 60th on the 2018 Fortune 500 list.[9] According to the 2016 Forbes Global 2000 list, AIG is the 87th largest public company in the world.[10] On December 31, 2017, AIG had $65.2 billion in shareholder equity.[11] During the financial crisis of 2008, the Federal Reserve bailed the company out for $180 billion and assumed control, with the Financial Crisis Inquiry Commission correlating AIG’s failure with the mass sales of unhedged insurance.[12] In 2011 the nationalization of AIG was ruled illegal,[13] and after regaining autonomy, AIG repaid $205 billion to the United States government in 2012.

Ally Financial is a bank holding company organized in Delaware and headquartered in Detroit, Michigan. The company provides financial services including car finance, online banking via a direct bank, corporate lending, vehicle insurance, mortgage loans, and an electronic trading platform to trade financial assets. Ally is ranked 19th on the list of largest banks in the United States by assets, is the largest car finance company in the U.S. by volume,[2] and serves over 6 million customers.[1] Via its SmartAuction online marketplace for auto auctions, launched in 2000, the company has sold more than 5 million vehicles, including 281,000 vehicles sold in 2018.[1][3] The company was known as GMAC, an acronym for General Motors Acceptance Corporation, until 2010.

American Family Insurance, also abbreviated as AmFam, is an American private mutual company that focuses on property, casualty, and auto insurance, and also offers commercial insurance, life, health, and homeowners coverage as well as investment and retirement-planning products. A Fortune 500 company, its revenues were over $9.5 billion in 2017.[3][4] It should not be confused with American Family Home Insurance Company, a subsidiary of Munich Re subsidiary American Modern Insurance Group, Inc., or American Family Life Assurance Company of Columbus.

Ameriprise Financial, Inc. is an American diversified financial services company.[2] Ameriprise Financial engages in business through its subsidiaries, providing financial planning, products and services, including wealth management, asset management, insurance, annuities, and estate planning. Ameriprise Financial, Inc., the holding company, is incorporated in Delaware. The company’s headquarters are in Minneapolis, Minnesota. James Cracchiolo is the chairman and chief executive officer. The company’s primary subsidiaries include Ameriprise Financial Services, Inc., and RiverSource Life Insurance Company. Following a 2015 merger of Columbia Management and Threadneedle Asset Management, Columbia Threadneedle Investments, is Ameriprise Financial’s global asset management brand, and a provider of investments to institutional and retail clients.

Anthem, Inc., is a provider of health insurance in the United States. It is the largest for-profit managed health care company in the Blue Cross Blue Shield Association. As of 2018, the company had approximately 40 million members.[2] Anthem is ranked 33rd on the Fortune 500.[3] Prior to 2014, it was named WellPoint, Inc.[4][5] The company was formed by the 2004 merger of WellPoint, based in California, and Anthem, based in Indianapolis, after both companies acquired several health insurance companies. The company operates as Anthem Blue Cross in California, where it has about 800,000 customers and is the largest health insurer. It operates as Empire BlueCross BlueShield in New York State and as Anthem Blue Cross and Blue Shield in 10 states.

Assurant, Inc. is a global provider of risk management products and services[3] with headquarters in New York City.[4] Its businesses provide a diverse set of specialty, niche-market insurance products in the property, casualty, extended device protection, and preneed insurance sectors. The company’s three operating segments are Global Housing, Global Lifestyle, and Global Preneed.[4] The company, formerly known as Fortis, Inc., was spun off from Dutch and Belgian financial-services company Fortis Insurance N.V. in 2004. The company’s initial public offering on Feb. 5, 2004 at $1.76 billion was the fourth largest that year. In connection with the public offering, the company changed its name to Assurant, Inc.[5][6] Assurant is 440 on the Fortune 500 list of the largest publicly traded companies in the United States.

The Bank of America Corporation (abbreviated as BofA) is an American multinational investment bank and financial services company based in Charlotte, North Carolina, with central hubs in New York City, London, Hong Kong, Minneapolis, and Toronto. Bank of America was formed through NationsBank’s acquisition of BankAmerica in 1998. It is the second largest banking institution in the United States, after JPMorgan Chase. As a part of the Big Four, it services approximately 10.73% of all American bank deposits, in direct competition with Citigroup, Wells Fargo, and JPMorgan Chase. Its primary financial services revolve around commercial banking, wealth management, and investment banking. One branch of its history stretches back to Bank of Italy, founded by Amadeo Pietro Giannini in 1904, which provided Italian immigrants who faced service discrimination various banking options.[3] Originally headquartered in San Francisco, California, Giannini acquired Banca d’America e d’Italia (Bank of America and Italy) in 1922. The passage of landmark federal banking legislation facilitated rapid growth in the 1950s, quickly establishing a prominent market share. After suffering a significant loss after the 1998 Russian bond default, BankAmerica, as it was then known, was acquired by the Charlotte-based NationsBank for US$62 billion. Following what was then the largest bank acquisition in history, the Bank of America Corporation was founded. Through a series of mergers and acquisitions, it built upon its commercial banking business by establishing Merrill Lynch for wealth management and Bank of America Merrill Lynch for investment banking in 2008 and 2009, respectively. Since both divisions carry the “Merrill Lynch” signage, the former is often referred to as “Merrill Lynch Wealth Management” to differentiate itself from the latter.[4] Both Bank of America, Merrill Lynch, and Merrill Lynch Wealth Management retain large market shares in their respective offerings. The investment bank is considered within the “Bulge Bracket” as the third largest investment bank in the world, as of 2018.[5] Its wealth management side manages US$1.081 trillion in assets under management (AUM) as the second largest wealth manager in the world, after UBS.[6] In commercial banking, Bank of America operates—but does not necessarily maintain retail branches—in all 50 states of the United States, the District of Columbia and more than 40 other countries.[7] Its commercial banking footprint encapsulates 46 million consumer and small business relationships at 4,600 banking centers and 15,900 automated teller machines (ATMs). The bank’s large market share, business activities, and economic impact has led to numerous lawsuits and investigations regarding both mortgages and financial disclosures dating back to the 2008 financial crisis. Its corporate practices of servicing the middle class and wider banking community has yielded a substantial market share since the early 20th century. As of August 2018, Bank of America has a $313.5 billion market capitalization, making it the 13th largest company in the world. As the sixth largest American public company, it garnered $102.98 billion in sales as of June 2018.[8] Bank of America was ranked #24 on the 2018 Fortune 500 rankings of the largest United States corporations by total revenue.[9] Bank of America was named the “World’s Best Bank” by the Euromoney Institutional Investor in their 2018 Awards for Excellence.

BB&T Corporation (Branch Banking and Trust Company) is a bank holding company based in Winston-Salem, North Carolina.[2] Its bank operates 2,049 branches in 15 states and Washington, D.C., and offers consumer and commercial banking, securities brokerage, asset management, mortgage, and insurance products and services.[1] It was ranked 16th on the list of largest banks in the United States by assets. Its subsidiary, BB&T Insurance Services, was one of the largest insurance brokers in the world.[3] In its history BB&T has made 106 mergers and acquisitions. Since it took over Southern National Bank in 1995, BB&T has made 43 deals. It is merging with SunTrust Banks in 2019 to form a company expected to be called Truist Financial Corporation, with a new headquarters in Charlotte, North Carolina.[4][5] BB&T is incorporated in North Carolina.

Capital One Financial Corporation is a bank holding company specializing in credit cards, auto loans, banking, and savings accounts, headquartered in McLean, Virginia.[1] Capital One is ranked 10th on the list of largest banks in the United States by assets. The bank has 755 branches including 30 café style locations[2] and 2,000 ATMs. It is ranked 98th on the Fortune 500,[3] 17th on Fortune’s 100 Best Companies to Work For list,[4] and conducts business in the United States, Canada, and the United Kingdom.[1] The company helped pioneer the mass marketing of credit cards in the 1990s.[5] In 2016, it was the 5th largest credit card issuer by purchase volume, after American Express, JP Morgan Chase, Bank of America, and Citigroup.[6] With a market share of 5%, Capital One is also the 2nd largest auto finance company in the United States, following Ally Financial.[7] In the fourth quarter of 2018, 75% of the company’s revenues were from credit cards, 14% were from consumer banking, and 11% were from commercial banking.