Key Highlights

  • Quoted at USD 860.39 on Friday, November 13, 2026, the shares were off 8.22%, sitting roughly 63.5% under the 52-week peak of USD 2,354.39 (my calculation).
  • Fiscal first-quarter Revenue soared 378% year over year to USD 11.0 billion, while adjusted Earnings of USD 49.51 per share beat a published estimate of USD 46.67.
  • Second-quarter revenue guidance is USD 12.4 billion with an 85% adjusted gross margin, and the 8-for-1 split is set to be followed by post-split trading on November 19 or 20.
  • A published report claimed Sandisk's NAND share had shrunk to 11% during the second quarter of 2026, having been 13% at the close of the first, a development that pressured the stock on November 10.

Sharp Swings Without a Fresh Corporate Announcement

Sandisk (NASDAQ:SNDK) traded 8.22% lower at USD 860.39 on Friday, November 13, 2026, based on live market data. I could find no company statement dated November 12 or 13 that accounts for the decline. Sandisk makes NAND flash memory and storage products. Its share price has been very volatile: a published report had the stock closing at USD 806.43 on November 5, down 22.26% during an AI and chip sell-off, and it slid again on November 10 after a research firm published a report on NAND market share. Shares have also dropped on days when results were strong. Several AI-infrastructure and memory names were among Friday's decliners, which fits a sector move but does not establish a common cause.

Record Quarter, Firm Guidance and the Pending Stock Split

Sandisk posted fiscal first-quarter figures covering the period that ended October 2, releasing them on October 29, 2026. Sales hit USD 11.0 billion, a 23% sequential increase, and adjusted per-share earnings reached USD 49.51. A published report gave data centre sales of USD 4.8 billion and Edge Computing sales of USD 5.8 billion. Looking ahead, the company is guiding to USD 12.4 billion in revenue and an 85% adjusted gross Margin next quarter. An 8-for-1 split has been announced, yet accounts differ on timing: one report places the effective date on November 19, while another has post-split trading beginning November 20. A split changes how many shares exist and what each costs, leaving the total value of a position untouched, so confirm the dates in the company notice.

Market Share Slide, Valuation Swings and Possible Reversals

For Sandisk (NASDAQ:SNDK), a November 10 note from a Market research firm indicated that its NAND flash revenue share declined to 11% in the second quarter of 2026, versus 13% previously, while a China-based competitor held 14%. Over the trailing 52 weeks the stock has traded between USD 183.00 and USD 2,354.39, and a November 13 quote put Market Capitalisation close to USD 133 billion. Published coverage connected the late-October drop to worries that AI Demand or memory prices may have crested, and tied the early-November chip slump to fears of stricter data-centre regulation. Inflation data running hotter arrived on November 10. Nothing specific to November 13 has been verified.

Where Things Stand

The evidence points away from a new company announcement. Sandisk (NASDAQ:SNDK) has fallen 8.22% in a share price that has lurched by double digits within individual sessions since late October, amid memory-price anxiety, a NAND share report and selling across AI names. Reported revenue reached a record USD 11.0 billion with guidance higher, yet expectations were already elevated. The 8-for-1 split lands next week and is largely procedural. Next on the calendar are the second-quarter report and any shift in memory pricing.