SanDisk's NAND Business Is Being Punished for a DRAM Problem

SanDisk shares fell 7.2% on Friday to close at EUR 1,160.00, caught in a broad selloff across memory chips that also carried fresh inflation worries into an already jittery semiconductor sector. Reuters reported the stock was heading toward a weekly loss of roughly 15% as the weakness rippled across the industry.

The retreat has pushed the shares 44% below their 52-week high — a valuation that, on the face of it, prices in a deeply pessimistic scenario.

A Sector That Suddenly Looks Vulnerable

For months, chipmakers were treated as untouchable beneficiaries of the artificial intelligence boom. Friday's trading laid bare how quickly that conviction can crack. Investors are now asking whether the massive technology investments underpinning the AI trade can hold up against mounting competitive pressure and economic headwinds. That question is landing hardest on memory stocks, and SanDisk is absorbing the blow alongside companies whose businesses look nothing like its own.

Part of the nervousness traces back to China. CXMT President Cao Kanyu presented advances in the company's 4F² DRAM architecture at an industry conference in Shanghai, according to media reports. The company plans to deploy the technology in DDR5-RDIMM server memory by the end of the year. Reuters said the reports of the competitor's technological progress deepened concerns about tougher competition and clouded sentiment around AI spending.

Why the DRAM Alarm Doesn't Fit SanDisk

That anxiety centers on DRAM architectures — not on SanDisk's core franchise, which is built around NAND flash memory. The distinction has been lost in the rush for the exits. The stock was dragged down in tandem with conventional DRAM manufacturers, a case of mistaken identity that leaves the shares carrying operational risks the company does not directly face.

Eric Cherrstrom, Vice President of Market Intelligence at SanDisk, has pointed out that solid demand for flash memory, combined with manufacturing advances, could fundamentally change the historical earnings profile of NAND memory. It is a strategic market assessment rather than a concrete financial forecast, but it underscores the segment's independent potential outside the familiar DRAM cycles.

The Numbers That Will Settle the Argument

Hard facts about current trading are still to come. SanDisk reports results for the first quarter of fiscal 2027 on October 29. That interim report will be the first real test of how resilient order intake and margins actually are in a toughening memory-chip environment.

Until then, the market is left trading on sentiment. The indiscriminate punishment of the stock amid broad AI doubts ignores the underlying demand for storage solutions. Should the company demonstrate that day-to-day business remains intact, the latest sector-wide selloff may look in hindsight like an overreaction.