S&P 500 Gains & Losses Today: Buffett's Berkshire Buys; Fair Isaac Soars, Equifax Falls

1. Berkshire Hathaway confirmed a $10 billion deal for Occidental Petroleum's petrochemical division. 2. Occidental Petroleum shares dropped 7.3% following the acquisition announcement. 3. The deal marks Berkshire's largest acquisition since 2022. 4. Higher demand for credit scores from Fair Isaac pressured competing credit bureaus. 5. Major U.S. equities, including Berkshire, posted fractional losses amid market fluctuations.