SanDisk Did In Months What Nvidia Took 9 Years To Pull Off — And The Chart Looks Almost Unreal

The chart below looks like AI-generated, but it’s not.

Since its February 2025 spin-off from Western Digital Corp. (NASDAQ:WDC), SanDisk Corp. (NASDAQ:SNDK) has gained 4,086%. Nvidia Corp. (NASDAQ:NVDA), the AI poster child of the decade, has gained 4,006% — over nearly nine years.

SanDisk did in 15 months what Nvidia took nearly a decade to deliver.

The reflex on Wall Street has been to call it a meme.

It isn’t.

Behind the parabola sits the most violent supply-demand mismatch the memory industry has seen since 2017, what Wall Street analysts now call the AI memory supercycle.

Nvidia vs. Sandisk Performance Comparison: This Chart Is Shocking Every Trader

The Three Memories That Run AI

Every AI server runs on three different kinds of memory chip, made by largely the same handful of companies.

1. DRAM is the working memory. It is what holds the data your computer is actively using — and what holds the parameters of an AI model while it runs. It is fast, but it forgets everything when the power is cut.
2. NAND flash is the storage memory. It is what’s inside an SSD or a USB stick. It is slower than DRAM, but it keeps data forever and costs a fraction per gigabyte. AI training datasets, model checkpoints, and retrieval databases all live on NAND.
3. HBM, or high-bandwidth memory, is a special kind of DRAM. Engineers stack 8, 12, or 16 DRAM chips on top of each other and bond the stack directly next to a GPU. The result is a memory pipe wide enough to feed an Nvidia GPU at full speed. Without HBM, AI accelerators starve.

Who Makes The Memory Nvidia Buys

The supplier list is short.

Three companies make almost all the world’s DRAM and HBM: Samsung Electronics Co., Ltd. and SK Hynix Inc. of South Korea, and Micron Technology Inc. (NASDAQ:MU) of Idaho.

Together they control more than 95% of global DRAM production and 100% of HBM.

SK Hynix is the king of the hill. It supplies roughly 90% of Nvidia’s HBM. Every Blackwell GPU shipped today carries SK Hynix memory.

For NAND flash, the cast widens by two. Samsung, SK Hynix, and Micron compete with Kioxia Holdings Corp. of Japan and SanDisk.

According to TrendForce, NAND market share at the end of third-quarter 2025 broke down roughly as: Samsung 32%, SK Hynix 19%, Kioxia 15%, …

Full story available on Benzinga.com