Walmart serves as the preeminent retailer in the United States, with its strategy predicated on superior operating efficiency and offering the lowest priced goods to consumers to drive robust store traffic and product turnover. Walmart augmented its low-price business strategy by offering a convenient one-stop shopping destination with the opening of its first supercenter in 1988. Today, Walmart operates over 4,600 stores in the United States (5,200 including Sam’s Club) and over 10,000 locations globally. Walmart generated over $440 billion in domestic namesake sales in fiscal 2024, with Sam’s Club contributing another $86 billion to the company's top line. Internationally, Walmart generated $115 billion in sales. The retailer serves around 240 million customers globally each week.

Deutsche Telekom merged its T-Mobile USA unit with prepaid specialist MetroPCS in 2013, and that firm merged with Sprint in 2020, creating the second-largest wireless carrier in the US. T-Mobile now serves 77 million postpaid and 21 million prepaid phone customers, equal to around 30% of the US retail wireless market. The firm entered the fixed-wireless broadband market aggressively in 2021 and now serves more than 5 million residential and business customers. In addition, T-Mobile provides wholesale services to resellers.

The wireless business contributes nearly 70% of AT&T’s revenue. The firm is the third-largest US wireless carrier, connecting 72 million postpaid and 17 million prepaid phone customers. Fixed-line enterprise services, which account for about 15% of revenue, include internet access, private networking, security, voice, and wholesale network capacity. Residential fixed-line services, about 11% of revenue, primarily consist of broadband internet access, serving 14 million customers. AT&T also has a sizable presence in Mexico, with 23 million customers, but this business only accounts for 4% of revenue. The firm recently agreed to sell its 70% equity stake in satellite television provider DirecTV to its partner, private equity firm TPG.

Bank of America is one of the largest financial companies in the world. The company is primarily a U.S. retail and commercial bank, with a network of more than 4,000 branches across much of the country. The 2005 acquisition of MBNA made Bank of America the nation's largest credit-card lender. As such, trends in consumer interest rates, employment, income growth and borrowing patterns represent a significant risk to the company's earnings. The 2008 acquisition of Countrywide made BofA the country's largest mortgage company as well. BofA became a top-tier securities firm and retail broker with the acquisition of Merrill Lynch.