📊 SK hynix at the Crossroads of AI Memory Expansion and Intensifying Competition - 2026.09.19

Hi, it’s Goguma. Today, the key issue for SK hynix is that both its efforts to broaden the AI memory field and the pursuit by competitors targeting the gaps are intensifying at the same time. The September 18 closing price was ₩1,849,000, moving +4.70% from the previous day, but you need to look at both sides of the business—not just one line of stock-price data—to see the full picture. 🍠

Is AI Memory Preparing Its Next Move After HBM?

Reports say SK hynix is pursuing a transition to an AI full-stack system that includes HBF beyond its existing HBM. There was also an explanation that SK Group Chairman Chey Tae-won plans to move the vice chairmen into frontline roles and accelerate structural improvements ^[1]. Taken at face value, the report suggests the company’s focus is expanding beyond a single product to the entire AI memory ecosystem.

Still, we need to draw a line here. What was reported concerns efforts toward a transition and organizational reshuffling, not a confirmed execution schedule or business results. In Goguma’s view, this is closer to the stage of laying out a large map. Drawing roads on a map does not mean the actual roads are built immediately.

The Competitive Landscape Does Not Move in Only One Direction ⚖️

Cheonji Ilbo reported that Chinese and U.S. companies are pursuing Samsung Electronics and SK hynix in the DRAM and HBM markets ^[2]. This raises the question of whether we should examine not only SK hynix’s position built up in AI memory, but also how competitive intensity is changing across both DRAM and HBM.

However, this is a third-party report covering competitor advances. It does not officially confirm a change in market share by the company or acknowledge the performance of any specific competitor. So there is still insufficient information to conclude that “competition is over” or that “the advantage is firmly established.” Onion may place more weight on the benefits of technological leadership, while Peanut may view the speed of competitors’ pursuit as more important. The two perspectives clash slightly here.

Views on the Memory Cycle Also Diverge 🎯

Seeking Alpha presented an analysis that SK hynix’s memory supercycle has not yet reached its peak ^[3]. This is external analysis, not a forecast officially issued by the company. Accordingly, it should be read as one bullish scenario in which demand for AI memory and industry conditions may continue.

But when viewed alongside reports of intensifying competition, a question arises. Even if favorable conditions in the memory industry continue, how much of the benefit will remain with SK hynix? Acorn can focus on the sustainability of the cycle, while Carrot may examine how quickly competitors are catching up within that cycle. It is like watching the same train: one person counts its speed, while another counts its carriages.

Putting Your Perspectives Together 🤝

Here’s how Goguma would summarize the four viewpoints. Onion is looking at the scalability of the AI full-stack transition, Acorn at the sustainability of the memory cycle, Peanut at the pursuit by Chinese and U.S. companies, and Carrot at whether actual competitiveness is being maintained amid all this.

In my view, bullish and bearish scenarios coexist. The direction of expanding the AI memory business has been reported, but competitive intensity and external forecasts are raising different questions. This is precisely where Onion’s and Peanut’s perspectives collide head-on. The variables to watch going forward are what specific businesses the full-stack transition leads to, and what actual changes the pursuit by competitors creates in the structure of the HBM and DRAM markets.

📰 Reference News (3)

1

[Cheer on K-Industry] ② Chey Tae-won Reshuffles SK hynix’s Battle Lines… A Bold Move Toward “Deploying Vice Chairmen and Transitioning to Full Stack”

네이버뉴스 · 2026.09.19

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2

Chinese and U.S. Players Shake Samsung and SK hynix’s Stronghold… Pursuit of DRAM and HBM Market Share Intensifies - Cheonji Ilbo

천지일보 · 2026.09.19

📰 View original

3

SK hynix Stock: Memory Supercycle Isn't Peaking Yet (NASDAQ:SKHY) - Seeking Alpha

Seeking Alpha · 2026.09.18

📰 View original