McDonald's suffers worst US sales loss since the pandemic after E. coli outbreak — but here's why the stock is rising

1. McDonald's US sales fell 1.4%, their worst drop since the pandemic. 2. E. coli outbreak linked to Quarter Pounder impacted customer spending. 3. Despite US losses, global sales grew due to fading boycotts. 4. Fourth-quarter revenue was $6.39 billion, missing $6.44 billion estimate. 5. McDonald's invested $100 million to recover from the sales decline.