Western Digital is trading $441.14 (+4.07%) after rebounding from its recent pullback, as memory-chip stocks rally on sustained AI demand, tight supply, and stronger pricing power despite major U.S. indexes trading lower on September 18, 2026.
- Intraday activity reached 3.21 million shares by 1:32 p.m. ET.
- No new company-specific announcement was identified; the move is primarily sector-driven.