SNDK Slides 26% as Retail Investors Debate Support Levels and AI Narrative Risk

SNDK dropped 26.35% in the week through July 15, leading a chip stock rout that saw the Philadelphia SE Semiconductor Index fall 8.48%.
Reddit users on r/stocks flagged SNDK as a potential short candidate, noting it sits at a critical support level near $1,500 where the 50-day moving average and prior resistance-turned-support converge.
Despite the steep decline, SNDK’s sentiment among Reddit mentions remained positive (0.66), suggesting some traders still see value in the AI memory narrative.

Why SNDK Stood Out on July 18

Sandisk (

$SNDK) became a focal point for retail investors on July 18 after a brutal selloff erased more than a quarter of its value in a single week. The stock’s 26.35% drop outpaced peers like Marvell Technology (-20.15%) and Intel (-11.71%), drawing attention to whether the decline represents a buying opportunity or the beginning of a deeper correction in AI-linked semiconductor names.

The broader context: U.S. equity funds recorded net outflows of $4.8 billion in the week through July 15, their first weekly disposal in three weeks, as a selloff in chip stocks and rising geopolitical tensions outweighed strong earnings and cooler inflation. The Philadelphia SE Semiconductor Index fell roughly 8.48% during the same period, with

$SNDK taking the hardest hit among the names mentioned in LSEG Lipper data.

Reddit Discussion: Shorting AI Stocks at Support

On r/stocks, a post titled “Shorting AI Stock with ETF” argued that several AI-related stocks—including

$SNDK, LITE, AAOI, and MU—have already dropped considerably but are now sitting at levels that have held before. The author pointed to SNDK’s $1,500 zone, where the 50-day moving average and an old resistance-turned-support line align, as a critical juncture. The thesis: these support levels only hold because traders keep buying the dip on the AI memory shortage and hyperscaler capex story. If that narrative cracks, the floor could give way quickly, triggering a cascade from leveraged long positions.

The post generated 37 upvotes and 23 comments, reflecting active debate. Some commenters pushed back, arguing that the AI buildout is still in early innings and that SNDK’s fundamentals remain intact. Others agreed that the stock’s rapid run-up left little support beneath the current level, making it a high-risk, high-reward short.

Chip Selloff and Fund Outflows

A separate r/stocks post highlighted the broader fund flow picture: U.S. equity funds saw net outflows of $4.8 billion as investors sold growth funds ($7.18 billion net) while rotating into value funds ($3 billion inflows). Technology sector inflows cooled to a three-week low of $1.57 billion. The post specifically named

$SNDK as one of the hardest-hit chip stocks, reinforcing the idea that the selloff was not isolated but part of a broader de-risking in the semiconductor space.

SNDK

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