S&P 500 Gains and Losses Today: Arista Networks Stock Surges, Supermicro Plunges After Earnings Reports
1. Arista Networks surged 17.5%, reaching a record high on strong earnings. 2. Year-over-year revenue growth of 30% driven by AI and cloud demand. 3. Company raised full-year revenue guidance and analysts revised price targets upward. 4. S&P 500 rose 0.7%, buoyed by tech sector strength from major investments. 5. Super Micro Computer shares declined sharply after missing revenue estimates.