Sandisk
NAND flash memory, SSDs and memory cards, from phones to AI data centres.
Public · NASDAQ:SNDK- Sector
- Semiconductors
- Based in
- Milpitas, United States
- Founded
- 1988
- Invested
- Jul 2026
- Formerly
- SunDisk
Sandisk makes NAND flash memory, the storage inside phones, laptops and data centre servers. It sells flash chips and solid-state drives to device makers and cloud companies, and memory cards and USB drives to consumers.
It makes its flash in a long-running joint venture with Japan's Kioxia, and is growing its business in high-capacity SSDs for AI data centres.
Eli Harari, Sanjay Mehrotra and Jack Yuan founded the company in 1988 as SunDisk. Western Digital bought it in 2016, then spun it back out as a separate listed company in February 2025.
As of 29 Sep 2026
Why I own it
AI creates enormous amounts of data, and it has to live somewhere. Fast flash storage in data centres is the next bottleneck after compute and memory.
Sandisk is a pure play on NAND flash. As inference grows and agents keep more context and memory about the people they work for, demand for storage grows with it.
From the notebook
All notesTheme
NAND flash prices are tipped to keep rising into 2027
Gartner expects global NAND flash revenue to surge 372 percent in 2026 on tight supply and AI data centre demand, with another 30 percent price rise pencilled in for 2027. Sandisk, which holds around 11 percent of the NAND market, posted fiscal 2026 revenue up 175 percent to $20.25bn on the back of it. Micron sells into the same crunch, though its mix leans more to DRAM and high bandwidth memory than Sandisk's NAND-heavy lineup.
Since this note:Sandisk −6.4%Micron −3.6%(S&P 500 +0.6%)
MicronWritten by AI from share prices, the companies' posts and the news. Can be wrong; not financial advice.
