TLDR
- Sandisk stock drops 14.13% despite major 3D Flash production launch.
- Kioxia and Sandisk start 10th-gen NAND output at Japan’s Fab2 plant.
- New CBA-based flash memory targets AI, data center, and device demand.
- Fab2 adds energy-saving tools and AI systems to improve production scale.
- Sandisk-Kioxia JV extension supports NAND innovation through December 2034.
Sandisk Corporation (SNDK) stock fell sharply despite a fresh production milestone in Japan with longtime partner Kioxia. Shares dropped 14.13% to close at 1,745.00, then recovered slightly after hours to 1,762.07. The move showed that the 10th-generation 3D Flash launch failed to offset heavy market pressure.
Sandisk Stock Drops Despite Production Milestone
Sandisk and Kioxia started production of 10th-generation 3D Flash memory at Fab2 in Kitakami, Japan. The facility sits inside Kioxia’s Kitakami Plant in Iwate Prefecture. Sandisk stock still ended the session deep in negative territory.
The companies presented the start of production as a major step in their NAND flash roadmap. The new products use CBA technology, which bonds CMOS directly to the memory array. The design targets higher performance, larger capacity, and lower power use.
Fab2 opened in September 2025 and already produced 8th-generation 3D Flash products. Now, the plant will scale output with the newer 10th-generation technology. The facility becomes a key site for future memory supply.
Kioxia and Sandisk Extend Long-Running NAND Partnership
Kioxia and Sandisk have worked together in NAND flash memory for more than 25 years. The companies also recently extended their joint venture framework through December 2034. That agreement gives both sides a longer runway for joint development and capital investment.
The partnership has helped both companies develop and produce advanced flash memory at scale. It also supports stable production planning during rising demand from AI, data centers, PCs, and smartphones. The latest production start strengthens their shared technology pipeline.
The Kitakami facility also includes earthquake-absorbing architecture and energy-saving manufacturing equipment. The plant uses artificial intelligence to improve production efficiency. Its space-saving clean room design also allows more manufacturing equipment inside the facility.
AI Demand Supports Long-Term Flash Memory Expansion
The companies expect advanced flash memory demand to grow as AI workloads increase storage requirements. Generative AI systems need fast, dense, and power-efficient memory across devices and data centers. Therefore, Sandisk and Kioxia continue to invest in newer 3D Flash generations.
Kioxia traces its memory business to Toshiba Memory, which spun off from Toshiba in 2017. Toshiba invented NAND flash memory in 1987, giving Kioxia deep roots in the sector. Kioxia develops flash memory and SSDs for several high-density applications.
Sandisk sells flash solutions and advanced memory technologies for consumer and enterprise markets. The company’s latest update highlights its role in the global NAND supply chain. Sandisk Corporation stock closed lower as selling pressure outweighed the production announcement.


