AON ▼ -0.7% - Aon plc $AON - Aon to acquire USI to establish the premier U.S. middle-market platform Aon announced it will acquire USI to create a leading platform in the U.S. middle-market insurance and consulting space. Despite the strategic expansion, shares declined 0.7% today, suggesting investors may have concerns about the acquisition's cost, integration challenges, or near-term financial impact, though the headline doesn't specify the deal terms or rationale for the market's muted response. 31-AUG-2026 06:30 AM ET