Over the past year, smart investors have identified a new pocket of the artificial intelligence (AI) realm that's poised for a breakout: memory and storage.
On one side of the equation is Micron Technology (MU +4.11%), a specialist in dynamic random access memory (DRAM) and NAND solutions. On the other side is Sandisk (SNDK +2.42%), an expert in NAND flash storage.
Both stocks have been absolutely on fire so far in 2026, and growth investors are surely weighing the pros and cons of each of these chip stocks. Let's consider whether Micron or Sandisk is the better buy right now, and why.
Image source: Getty Images.
Why are AI memory stocks booming right now?
During the early phases of the ongoing AI data center buildout, Nvidia was able to capture a good portion of the capital expenditures of hyperscalers such as Microsoft, Amazon, Alphabet, and Meta Platforms.
As generative AI workloads scale, however, investors are starting to realize that high-performance computing systems don't just require cutting-edge processors, but also massive volumes of memory chips and high-speed storage solutions.
The rising capital expenditure budgets among big tech players have created a major supply-demand imbalance in the memory and storage markets -- with prices for DRAM and NAND chips expected to surge by up to 60% and 38%, respectively, during the first quarter, even after steep rises in prior periods.
This memory supercycle has led to unprecedented revenue and profit growth for companies like Sandisk and Micron. As a result, investors are beginning to rotate capital away from the hyperscalers and scoop up more shares of the beneficiaries of hyperscalers' spending.
Why is Sandisk important for AI?
You may already be familiar with Sandisk, as the company's chips are often found in consumer electronics. Following its spinoff from Western Digital last February, Sandisk has emerged as a big winner in the ongoing memory supercycle. The reason is simple: It dominates a particular niche in NAND flash storage.
NASDAQ: SNDK
Key Data Points
It specializes in enterprise solid state drives (SSDs) and other storage solutions that are ideal for scaling AI workloads. One of Sandisk's more savvy innovations is its high bandwidth flash (HBF) -- essentially, a means to provide memory capacity in a more energy-efficient way than traditional high bandwidth memory (HBM) products.
This is a particularly lucrative value proposition for hyperscalers, which are spending hundreds of billions of dollars not only on constructing data centers, but on outfitting these facilities to run sustainably and (to the degree that it's possible) with less electricity.
Is Sandisk a better buy than Micron stock?
The question of whether Sandisk or Micron is a more appropriate investment for you will ultimately boil down to your appetite for risk.
Micron is a major player in DRAM solutions and remains a top vendor in an otherwise fragmented HBM market. That more diversified business may give the appearance that Micron is a more balanced operation than Sandisk, which is more of a pure-play opportunity in the NAND flash landscape.
SNDK PE Ratio (Forward) data by YCharts.
The two trade at fairly similar forward price-to-earnings (P/E) multiples. And both trade at steep discounts to other leading AI semiconductor stocks.
While these other chip stocks have their own respective addressable market opportunities, the high-level takeaway from that relative discount is that both Micron and Sandisk appear positioned for some degree of valuation expansion as memory and storage become increasingly important pillars of the AI megatrend.
Accelerating demand will likely result in memory and storage chips remaining a bottleneck in the AI infrastructure buildout for quite some time. Against this backdrop, I think it would be prudent to own positions in both Micron and Sandisk.
