Prediction: Micron and Sandisk Stocks Will Both Plummet After July 30

The explosive growth of artificial intelligence (AI) has ignited a new supercycle in memory and storage chips. Training and running AI models demand enormous quantities of high-speed, low-latency memory to process massive data sets and parallel computations without bottlenecks.

Micron Technology (NASDAQ: MU) and Sandisk (NASDAQ: SNDK) have been prime beneficiaries of the AI memory boom thanks to their leadership in DRAM, NAND flash, and high-bandwidth memory (HMB). So far this year, Sandisk and Micron have surged 503% and 210%, respectively -- making them the top two performers in the Nasdaq-100.

While it may be tempting to follow the momentum, I think a harsh sell-off could be in store later this month. Read on to find out why.

Image source: The Motley Fool.

Why memory is becoming the bottleneck of AI workloads

AI systems cannot function efficiently without high-performance memory. Frontier models shuttle billions of parameters and contextual data between processors at blistering speed. Insufficient DRAM bandwidth or storage capacity quickly becomes a limiting factor regardless of how powerful the underlying GPU clusters are.

Micron specializes in DRAM and HBM for training and real-time inference. Sandisk focuses on high-density NAND flash and enterprise-grade solid-state drives (SSDs) -- the storage foundation for vast data sets and model weights that power AI at scale. Both companies have ridden powerful tailwinds as AI hyperscalers race to expand capacity -- creating a structural shortage that has supported robust pricing power and earnings expansion.

Apple is pushing for more efficiency on its devices

At the moment, there is no indication that Apple (NASDAQ: AAPL) will build its own memory fabs. Instead, the company continues to rely on external suppliers for its DRAM and NAND needs. However, recent reports suggest that Apple is exploring a collaboration with a company called PrismML, which specializes in memory compression.

The idea here is simple: Apple could use software optimizations to shrink AI models so they run more effectively on iPhones. By doing so, Apple can use memory quantization to slash memory cost requirements on select hardware while deploying the most demanding features on higher-end devices where component costs can be passed along to consumers in the form of price hikes.

Taking a trip down memory lane

Back in April, Alphabet released a product called TurboQuant, which promised major reductions in memory usage for AI inference. As the chart below shows, this announcement triggered an immediate sell-off in Micron and Sandisk stocks on fears that memory demand would evaporate.

MU data by YCharts

Investors can see that the sell-off was swift, yet the declines were ultimately short-lived. Both stocks quickly recovered and went on to notch fresh all-time highs as AI adoption continued to scale with higher overall memory and storage usage.

I think a comparable pattern could play out after Apple reports earnings on July 30. Any commentary about on-device AI progress or even rumors of proprietary memory protocols could spark short-term selling pressure in Micron and Sandisk as investors worry about reduced memory demand or new competition.

With that said, history suggests such a move would be overdone. Even if Apple improves its on-device capabilities or partners with memory-efficient providers, the fundamental need for HBM across the broader AI infrastructure stack is not going to diminish overnight. In fact, any advancement that Apple makes ultimately underscores the enduring importance and scarcity of advanced memory in the AI era. For this reason, any post-earnings weakness in Micron or Sandisk could represent a compelling opportunity to buy the dip.

Adam Spatacco has positions in Alphabet. The Motley Fool has positions in and recommends Alphabet, Apple, and Micron Technology. The Motley Fool has a disclosure policy.