Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies making news on Wall Street.

UnitedHealth jumps after Berkshire Hathaway disclosed a stake in the health insurer. Applied Materials, Globant and Nu Holdings see big moves following quarterly earnings reports.

Key Takeaways U.S. equities were mixed at midday following the release of the July retail sales report, which came in as expected.UnitedHealth Group lifted the entire insurance sector after Warren Buffett's Berkshire Hathaway reported it held 5 million shares in its portfolio.