Berkshire Hathaway, a conglomerate renowned for its enduring success, leverages its substantial insurance operations as a key driver for long-term expansion. In the second quarter, the company's insurance float, which represents premiums collected before claims are disbursed, experienced a significant increase of $1.1 billion, reaching an impressive total of $177.5 billion. This expanding float is a fundamental component of Berkshire's growing cash reserves, enabling strategic investments across diverse industries. While the underwriting profit saw a modest decline during this period, the broader enterprise maintained robust growth across its other business sectors, underscoring its diversified strength and continued capacity to deliver value to investors.
Insurance forms the bedrock of Berkshire Hathaway's consistent prosperity, supplying the company with an enormous reservoir of capital through its float. This float, essentially money held before policyholder claims are paid, is strategically invested by Berkshire, primarily in secure U.S. Treasury securities. Given the predictable nature of claims over time, and with collected premiums consistently outpacing disbursements, Berkshire's cash reserves systematically accumulate, providing a stable financial foundation.
During the second quarter, this financial strategy led to the float's remarkable growth to $177.5 billion. This substantial capital, alongside other investments, positioned Berkshire Hathaway with $324.9 billion in U.S. Treasuries and an additional $323.8 billion in equities by the close of the quarter. This immense pool of resources empowers the conglomerate to pursue significant investment opportunities.
Despite this impressive float expansion, the company's after-tax underwriting earnings from insurance operations experienced a 13% year-over-year decrease in the second quarter. This downturn was largely attributed to elevated claims costs within its GEICO auto insurance division. Specifically, GEICO's loss ratio climbed to 76.6%, a notable increase from 71.8% in the preceding year. Furthermore, GEICO faced rising operational expenses due to increased advertising expenditure during the same period.
However, the broader insurance portfolio showcased strong performance. Berkshire Hathaway Primary Group and Berkshire Hathaway Reinsurance Group demonstrated excellent results, benefiting from lower-than-anticipated losses and sustained premium growth. This resilience across other insurance segments helped mitigate the challenges faced by GEICO.
For individuals investing in Berkshire, close attention to its insurance activities is always warranted, as these operations have historically contributed significantly to the company's enduring value. Nevertheless, even with a reduction in insurance earnings, Berkshire Hathaway's overall business continued its upward trajectory, with second-quarter operating earnings surging by 16% to nearly $13 billion. This growth was primarily fueled by strong performances in its manufacturing, service, and retail divisions. The company also marked a significant shift by becoming a net buyer of equities for the first time in three and a half years, notably augmenting its investment in Alphabet to $40 billion. With a colossal $365 billion in capital still available for deployment, Berkshire Hathaway remains an outstanding investment choice for those seeking a high-quality stock offering inherent diversification.