Sandisk is trading 4.3% up now at $1620.56, driven by broad strength across memory-chip stocks, sustained AI demand, tight NAND and DRAM supply, and stronger pricing power.
- The broader risk-on backdrop is supportive, with the Nasdaq Composite up 1.28% and the S&P 500 up 0.85% on September 17, 2026.
- No clear company-specific announcement was identified for September 17. Recent commentary on AI-focused flash products provides longer-term support but does not directly explain the intraday move.