• Western Digital is trading at $558.00 (up 4.7%) in after-hours trading, extending a sharp rebound in memory-chip names.
  • The stock jumped 15.4% during regular hours on July 30, 2026, as AI and memory-linked semiconductor stocks rallied, partly due to the reported unwinding of the Situational Awareness hedge fund.
  • The broader rally was also fueled by improving industry fundamentals, tighter supply, and strong AI-driven demand for data-center storage.