Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from these and its other operations over the years to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include five of Berkshire's largest noninsurance pretax earnings generators: Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis.

The United States economy is full of innovation. It has to be. Manufacturing industries that dominated the economy decades ago - textiles, televisions, even automobiles to a large degree - have moved overseas, where labor and materials costs are lower. Yet the U.S. economy, even during the pandemic and the current period of high inflation, has expanded to record levels. If U.S. corporations weren't innovating, creating new products (such as vaccines and AI) and services (such as Zoom calls) and moving into new markets, the domestic economy would not be growing, and capital would not be flooding into the country. The current high level of the U.S. dollar relative to currencies around the world attests to the confidence that global investors have in the durable and innovative U.S. economy.

PayPal was spun off from eBay in 2015 and provides electronic payment solutions to merchants and consumers, with a focus on online transactions. The company had 426 million active accounts at the end of 2023. The company also owns Venmo, a person-to-person payment platform.

Nvidia Corp., based in Santa Clara, California, is a visual computing company with worldwide operations and markets. The company operates through two segments, Graphics and Compute & Networking. The company's four main markets are gaming, professional visualization, data center, and automotive. In calendar 2020, Nvidia completed the acquisition of data-center connectivity leader Mellanox.