🟢 Arm Holdings is trading 3.46% up in pre-market after launching Neoverse CSS N4 for AI infrastructure

Arm Holdings is trading 3.46% up at $260.80 after launching Neoverse CSS N4 on September 8, 2026.

• Cloud/data-center platform supports up to 128 cores per die, uses TSMC’s N3P, and promises up to double CSS N3 performance.
• Adds LPDDR6 and PCIe Gen 7 support, strengthening Arm’s AI-infrastructure positioning.
• Mixed broader markets make the company-specific announcement the clearest catalyst; elevated pre-market activity has shares extending gains after rising 3.92% on September 4, 2026.