Micron, SanDisk, and SK Hynix: Brief Market Commentary

On September 22, the three global memory giants showed a clear divergence in performance. The industry has officially entered a phase of structural uptrend: high-end AI storage is leading strongly, while traditional consumer storage is trading in a high-range sideways consolidation.

Today, SK Hynix on the Korean stock market strengthened against the trend, with a daily gain of more than 2.8%, becoming the strongest stock in the sector. The key driving force is the continued tight supply of AI servers’ HBM high-bandwidth memory. Orders are full, capacity remains in short supply, and institutions remain optimistic about its earnings recovery and valuation expansion. Sector sentiment for this track stays at the top of the industry.

Yesterday, SanDisk in the U.S. stock market pulled back from a high level, down slightly by 1.41%, which is a typical profit-taking digestion move. The prior increase in flash memory prices had propelled the stock sharply higher. After being overbought in the short term, it entered consolidation and adjustment; however, the logic behind NAND spot price increases over the medium to long term has not been broken.

Overall, Micron has been trading in a narrow range, with a roughly balanced struggle between bulls and bears. The company’s DRAM and NAND product lines are complete, but demand for traditional consumer-grade storage has been lackluster, with no short-term catalysts to trigger a sudden breakout. As a result, its performance is relatively weaker.

In summary, the upcycle for the memory industry has not ended, but the broad “green-all-the-way” rally is over. Capital continues to flock to the highly attractive AI storage sector, and the pattern of divergence in relative strength is likely to persist.
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