SanDisk shares declined nearly 2% on Thursday despite the company's announcement of a massive investment programme with Kioxia Holdings to expand flash-memory production in Japan. The companies plan to invest more than ¥5 trillion, or around $31.4 billion, through 2032, as demand for memory chips continues to rise amid the artificial intelligence boom.
SanDisk Stock Falls Nearly 2%
SanDisk shares fell as much as 1.87% to $1,471.38 during Thursday's trading session. The decline came despite the company's long-term expansion plans, suggesting investors were not immediately impressed by the scale of the proposed capital expenditure.
The investment will focus on expanding production infrastructure and related technology at Kioxia's Yokkaichi and Kitakami facilities in Japan.
$31 Billion Investment to Boost Memory Production
SanDisk and Kioxia said the joint investment programme is designed to increase production capacity and support long-term growth in flash-memory demand.
The companies expect the spending to help deliver sustained growth in memory-bit production while strengthening supply capabilities for high-capacity and high-performance flash storage.
The investment plan is also connected to the rapidly expanding AI industry. AI data centres require huge amounts of storage capacity, increasing demand for NAND flash memory alongside other semiconductor technologies.
New Facility Planned in Japan
As part of the expansion, Kioxia plans to construct a new facility at its Kitakami plant in Iwate Prefecture. Operations at the facility are targeted to begin in the fiscal year starting April 2029, although the precise construction and equipment investment schedule will depend on market conditions.
The investment programme remains contingent on government support from Japan, according to the companies.
AI Boom Drives Memory Chip Demand
The announcement comes as semiconductor companies worldwide are increasing investments to meet growing demand generated by artificial intelligence.
NAND flash memory is used for long-term data storage in smartphones, computers, SSDs and data centres. With AI applications becoming increasingly data-intensive, demand for high-capacity and power-efficient storage is expected to remain strong.
Kioxia and SanDisk have already invested more than $50 billion in Japan over the past 25 years, highlighting their long-standing manufacturing partnership.
Why SanDisk Shares Fell
Despite the positive long-term outlook, investors may be weighing the enormous capital requirements associated with expanding semiconductor production. The immediate share-price reaction indicates that the market is looking beyond the headline investment figure and assessing its potential impact on future earnings, cash flows and returns.
The move also comes after a strong run for SanDisk shares in 2026, making the stock more sensitive to profit-taking and changing expectations around AI-related semiconductor investments.
The latest announcement nevertheless reinforces SanDisk's position in the rapidly expanding AI memory ecosystem, with the company and Kioxia betting heavily on continued demand for advanced flash storage.
