SNDK is trading 3.4% down at $1288.08 following a sharp decline triggered by competitive threats from Western Digital’s new post-quantum cryptography hard drives.
- The stock fell 5.30% on May 18, 2026, after Western Digital's announcement raised concerns about future demand for SanDisk’s NAND memory products.
- SanDisk is also facing broader sector weakness as chip and AI-related technology stocks remain under pressure.