SanDisk stock has bounced around wildly since late June, with shares falling sharply, then bouncing back, then falling again. This is not about news from the company itself. It is about how the entire memory-chip sector is trading.

On July 2, SanDisk dropped 11% during midday trading before falling another 3% by day's end, closing down 14% total at $1,745 The Motley Fool. Seagate fell 7% the same day. Micron fell 4% Yahoo Finance. The stock later recovered, rising to near $1,920 CNN.

Nine days before that, on June 23, something similar happened but started in South Korea. The Korean stock market crashed 10%. Memory-chip makers like Samsung fell hard. Because these Korean companies help set global prices for memory chips, the Seoul crash immediately hit US-listed memory stocks. SanDisk fell 11%. Western Digital and Micron each fell about 10% 24/7 Wall St..

Then on July 9, SanDisk jumped 7.6% as part of a broader chip rally Reuters. A few days later, on July 13, another Korean firm, SK Hynix, had just listed its stock in the US but then fell 15% in Seoul—its worst day in roughly twenty years—as traders sold positions Reuters.

None of this has shaken the confidence of Wall Street analysts who follow the company. Susquehanna raised its price target to $3,250 Investing.com. Bank of America raised its target to $2,100 Yahoo Finance. Cantor Fitzgerald set its target at $1,800. Goldman Sachs also published a view. All of this came after SanDisk guided for Q4 revenue of $7.75 billion to $8.25 billion TheStreet.

Those price targets are far above where the stock trades today. Even the most conservative target of $1,800 is below where SanDisk was trading just before the July 2 drop. Susquehanna's $3,250 target suggests the stock could rise 70% or more from current levels. The fact that analysts disagree this widely tells you something important: they are unsure whether memory-chip prices will stay strong, or whether the market is betting on expectations that will not hold up.

SanDisk itself has gained roughly three times in value since January 30, when it jumped 14.7% after issuing a blowout forecast tied to booming artificial-intelligence demand Reuters. Even after the recent drops, the stock is far higher than it was six months ago.

What is really happening is that traders are repricing the entire memory-chip sector based on supply and demand for AI. Memory chips—the kind that store data—are in short supply because data centers building AI systems need so many of them. That has made memory stocks move together as a group, rather than based on what each individual company does. When a big memory-chip market like South Korea falls, US memory stocks fall too, almost automatically.

The real question facing traders is whether memory-chip companies can hold onto the high prices they are getting right now into next year. If they can, analyst targets make sense. If the market is already betting too hard on that outcome, then the stock may not have much room left to run. SanDisk's own forecast range—$7.75 billion to $8.25 billion in revenue—is wide enough that it could fit either story. That is probably why the stock keeps swinging.