SanDisk shares are sliding as investors weigh the company's massive 700% rally in 2026 against concerns regarding the sustainability of the current NAND supply squeeze. The pullback follows a report released after the close on October 1, which noted that while Micron Technology posted strong results, SanDisk faces contractual limitations that may constrain its ability to capture further upside. This sentiment was compounded by a broader sector-wide decline in storage-related hardware, as evidenced by significant drops in peers like Western Digital and Seagate.