Arm Holdings is trading 4.86% up now at $289 after SoftBank expanded its margin loan backed by Arm shares by $5 billion, reaching $25 billion to finance aggressive AI investments.
- Bullish AI-sector momentum is supported by stronger pre-market Nasdaq sentiment and recent gains in Nvidia and Taiwan Semiconductor.
- No new earnings announcement or direct Arm operating update was identified for September 21, 2026.