---
symbol: "SNDK"
name: "SanDisk"
date: 2026-08-08
change_pct: -4.224022653976248
direction: "down"
event_type: "guidance"
url: "https://perplo.app/why/SNDK/2026-08-08"
updated_at: 2026-08-08T01:06:47.262Z
---

# Why SanDisk (SNDK) fell 4.22% on August 8, 2026

SanDisk (SNDK) fell 4.22% on August 8, 2026 — Weak SanDisk guidance triggers AI chip selloff.

## What happened

SanDisk issued weak forward guidance despite earnings that beat expectations, signaling softer demand ahead for NAND flash memory and raising concerns about the durability of the AI memory cycle.

## Why it moved

Softer guidance compresses investor expectations for NAND pricing and margins going forward; the AI memory supercycle that sustained elevated pricing through summer is rolling over as supply has caught up and demand…

## Why it matters

SanDisk's weakness is emblematic of the AI Memory theme itself — HBM and DRAM shortages lifted pricing, but the supply/demand rebalance is now pressuring the entire memory cohort, with the cycle that sustained Micron…

## What would break the thesis

If management clarifies that demand remains intact or raises full-year NAND margin guidance in coming weeks, the conviction in a memory cycle downturn weakens and the stock could recover.

## Sources

- [Sandisk's Weak Guidance Sends AI Chip Stocks Tumbling](https://finnhub.io/api/news?id=ed00c9410f677a9077b4887868eeab818f10b392c2960226eda30dcefa5c8936) — Yahoo
- [Sandisk Earnings Were So Much Better Than Expected. Why the Stock Is Dropping Anyway.](https://finnhub.io/api/news?id=3e2eb514a202224b5ca002d894a99a1c1c384ceb759e0ec03c183e700f51ddad) — Yahoo
- [Stock Market Today: Dow Up, Nasdaq Falls As AI Names Sandisk, Western Digital Sink After Earnings (Live Coverage)](https://finnhub.io/api/news?id=b6a173fd2695a17a1bb29f366ae43c100f6d4d7a11b561b6fa5897a876fd1de9) — Yahoo

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