Berkshire Hathaway’s service arm—comprising businesses such as railroad maintenance, manufacturing services and building products—contributed approximately 48% of the conglomerate’s Service and Retailing segment earnings in the latest fiscal year. With trailing twelve-month segment revenues of $35.2 billion, the service operations generated over $3.5 billion in operating profit, leveraging economies of scale across more than 90 independently managed subsidiaries. This stable cash flow has funded incremental bolt-on acquisitions—totaling $4.7 billion in the past 12 months—while maintaining segment operating margins near 10% despite rising input costs in logistics and raw materials.

Since Warren Buffett’s takeover in 1965, Berkshire Class A shares have delivered an average annual return of 19.7%, outpacing the S&P 500’s 10.5% over the same period. An initial $1,000 investment in BRK-A would now be worth roughly $48.5 million. At year-end 2025, the company held an unprecedented $381 billion in cash and U.S. Treasury holdings—enough to acquire outright 477 of the S&P 500 constituents based on their year-end market caps. This fortress balance sheet positions Berkshire to pursue large strategic investments or acquisitions in insurance, utilities and consumer services without issuing debt or diluting shareholders.