Micron Vs. SK Hynix: The Newcomer is a Legitimate Threat

Micron Technology (NASDAQ: MU | MU Price Prediction) just delivered a fiscal Q3 that redefined what an AI memory cycle looks like, while SK Hynix (NASDAQ:SKHY) posted its own record quarter in Korean won and made its NASDAQ debut in July 2026 through a $26.5 billion foreign offering. With both HBM leaders now trading on the same exchange, US investors can finally weigh them side by side.

HBM4 Ramps Meet a Korean Giant Reintroducing Itself

Micron’s June quarter was a step-change. Revenue hit $41.456 billion, up 345.7% year over year, with GAAP gross margin expanding to 84.6%. Cloud Memory alone contributed $13.769 billion, and Sanjay Mehrotra told analysts that “HBM4 12 high volume ramp is tracking twice as fast as HBM3E 12 high and we have already shipped over $1 billion in HBM4 revenue.” That is Micron chipping directly at SK Hynix’s flagship business.

SK Hynix answered with its own record: Q2 2026 revenue of 79.3 trillion won and operating profit of 60.5 trillion won, driven by HBM sales. A modest earnings miss triggered an initial 10% selloff in the ADR, yet analysts kept unanimous Buy ratings with 12-month targets averaging $245. Micron carries a heftier crowd: 40 Buys, 5 Holds, and a $1,501.98 average target.

One Locks In Customers. The Other Locks In Capacity.

Mehrotra’s take-or-pay agreements are the real weapon here. He said “even at the floor price… we expect the margins to be significantly above prior peak margins”, and those contracts will eventually cover roughly half of company revenue. SK Hynix leans on scale and its Nvidia relationship, which is a formidable moat but a less contractually rigid one.

The Next Test Is HBM4E and Supply Discipline

Micron expects fiscal Q4 revenue of $50.0 billion with ~86% gross margin, and Mehrotra flagged that tight conditions should persist beyond calendar 2027. The variables to watch are whether SK Hynix keeps HBM4 qualification on pace at Nvidia and whether Micron’s HBM4E on 1-gamma DRAM stays on track for volume production in calendar 2027. Any slippage swaps the leader.

Why Micron Leads, but the Newcomer Warrants Respect

Micron’s SCAs make the earnings stream harder to break than the market appreciates. A forward P/E of 6 against that contract book is a rare combination. That said, SK Hynix is now accessible, cheaper on some measures, and still the HBM incumbent. For Micron holders, the NASDAQ listing offers exposure to the same thesis through a second name. The single variable holding this cycle together is AI capex guidance from hyperscalers; a rollover there would reset the setup for both stocks.

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